in ziegler-natta olefin polymerization, the pore architecture of catalysts plays a crucial role in catalyticperformances and polymer properties. while the type of preparation routes (such as chemical reaction andsolution precipitation) greatly affects the catalyst pore architecture as a result of different solidification mechanisms,the modification of the pore architecture within a given route ...

mohammad-karim pirnia, one of the most prominent scholars of the history of iranian architecture, has recorded two major achievements: the principles of iranian architecture and the stylistics of iranian architecture. in this article we will discuss his suggested principles for iranian architecture. for this purpose, we will first show how his five principles have evolved and completed through ...

The purpose of this research is to investigate the ability to redefine the components and indicators of popular architecture facades in contemporary architecture. The research method is content analysis and descriptive-analytic and survey with semiotic and Delphi technique. At first, popular architecture is analyzed using the descriptive and analytical method. Next, 14 components of the popular...

a family in which two members are affected by pemphigus vulgaris is presented from gilan. up to now only 25 families in which more than one member was affected have been reported

Abstract Climate has an important effect on operation of the traditional building architecture and its energy consumption in desert area of Iran. Absence of water and unpleasant climate of these regions compelled people to build their houses with some strategies based on effective energy expenditure. Therefore, builders try to use natural climatic strategies for confronting hard situations. Nar...

Abstract Estimating sediment load of rivers is one the major problems in river engineering that has been using various data mining algorithms and variables. It desirable to obtain accurate estimates while techniques limit computational intensity when datasets are large. This study investigates usefulness geo-morphometric factors machine learning (ML) models for predicting suspended (SSL) severa...

Today, one of the important topics, which are mentioned in architecture, is the relationship between architectural works with each other and way of effect of such works on them. On the other hand, under current conditions and despite existing trends which look for their own architecture, it is crucial important to interpret how contemporary architectural works are affected by previous architect...

islamic architecture has a fundamental dignity and tries to preserve the spiritual and immortal elements. the most sensible characteristic of this type of art is the compatibility with the nature of islam; monotheism, which the mosque architecture provides the best bed for such purpose. the main model for constructing mosques, from both outward and internal spiritual truths point of view, is th...