for the first time, an unusual assemblage of talc-phengite-chlorite-k-feldspar was found in quartz schists from the sanandaj-sirjan zone in the nahavand area in western iran. the talc-bearing quartz schists occur as small bodies or lenses within pelitic schist layers and contain talc, phengite, chlorite, k-feldspar and quartz as major mineral constituents with subordinate amounts of calcite ...

Abstract We review a technique for solving class of classical linear partial diferential systems relevance to physics in Minkowski spacetime. All the equations are amenable analysis terms complex solutions kernel scalar Laplacian and complexifed Hertz potential. The complexifcation prescription ensures existence regular physical with chirality propagating, non-singular, pulse-like characteristi...

Te text analyzes the work of artists who use augmentation, information and immersion in specifc contexts—public or private spaces. Te aim of the analysis is to understand socio-cultural transformations in the felds of art and technology in social space and what new forms of aggregation and participation have developed, providing an opportunity to refect on new concepts of democracy that are eme...

the effects of physical, thermal and mechanical parameters on curing microthermal residual stresses are studied, based on the energy method, to present a theoretical solution for prediction of residual stress felds. a fnite element analysis is developed to compare the theoretical and numerical results together. there is found to be a good agreement between the results of the two methods. howeve...

4 large hameter casing design was adopted for 34 vells drilled in the Philippines using 13-3/8” mduction casing in combination with 9-5/8’ slotted iner to improve well output and to reduce space equirement in collaring the wells. Well test results ndicate an increase in production by as much as !50% compared with wells using the usual string ambination of 9-5/8” and 7-518”. In the 600 MWe q t e...

Membrane processes are used in various felds such as the environment, agriculture and different industrial sectors. These clean techniques are often adopted for directed processes such as treatment, recovery, valorization and separation. In this review article, the theoretical principles and the different classifcations of liquid membranes, such as supported liquid membra...

This paper proposes several actvites that encourage self-learning in engineering courses. For each actvity, the context and the pedagogical issues addressed are described emphasizing strengths and weaknesses. Specifcally, this work describes and implements fve actvites, which are: questonnaires, conceptual maps, videos, jigsaw and projects. These actvites are applied in seven diferent knowledge...

The dynamical equations which are basic for the description of the dynamics of quantum felds in arbitrary space–time geometries, can be derived from the requirements of a unique deterministic evolution of the quantum fields, the superposition principle, a finite propagation speed, and probability conservation. We suggest and describe observations and experiments which are able to test the uniqu...