The compound BaZn2Si2O7 shows a high coefficient of thermal expansion up to a temperature of 280 °C, then a transition to a high temperature phase is observed. This high temperature phase exhibits negative thermal expansion. If Ba(2+) is successively replaced by Sr(2+), a new phase with a structure, similar to that of the high temperature phase of BaZn2Si2O7, forms. At the composition Ba0.8Sr0....

1.Introduction 2. Product innovation: quality and variety 3. Growth and consumption composition 3.1 Effective demand in the long run 3.2 A dynamic theory of consumption. 4. Innovation in consumption 5. The composition effect: New products and expansion 6. The recovering 1980s 6.1 The peculiarities of the recovery 6.2 Glamorous consumption 6.3 Income distribution and social polarization 7. The b...

Alumina, mullite, and cordierite powder were added to a whiteware porcelain slurry sintered at 1280 °C investigate the correlation between composition strength. The X-ray diffraction patterns of bodies show that no new phase was formed, material remained intact. Except for sample group which added, strength increased as additive content increased. A Rietveld quantitative analysis indicated amor...

one of the themes of the poem has a significant presence in almost all periods in the history of arabic literature is wine poem. during the fourth and fifth centuries a.d, the arabic language which had become the official language of the land of khorasan, wine composition poem among the poets of this land had significantly grown. wine poets in their tremens had described many details such as th...

By definition, web-services composition works on developing merely optimum coordination among a number of available web-services to provide a new composed web-service intended to satisfy some users requirements for which a single web service is not (good) enough. In this article, the formulation of the automatic web-services composition is proposed as several set-cover problems and an approxima...

We study the bounded expansion of several models of web graphs. We show that various deterministic graph models for large complex networks have constant bounded expansion. We study two random models of webgraphs, showing that the model of Bonato has not bounded expansion, and we conjecture that the classical model of Barabási may have also not bounded expansion.