Successful tissue engineering involves the combination of scaffolds with appropriate cells in vitro or in vivo. Scaffolds may be synthetic, naturally-derived or derived from tissues/organs. The latter are obtained using a technique called decellularization. Decellularization may involve a combination of physical, chemical, and enzymatic methods. The goal of this technique is to remove all cellu...

the advantages and special characteristics of service oriented architecture and expansion of employing such architecture have brought security topics which are different in some cases from the security principles of traditional information systems. in this article our aim is the examination of various indices of security and the presentation of strategies for security in information systems by ...

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 ...

Ovarian borderline serous tumors are uncommon. Combination of borderline serous adenofibromatous tumor and prominent micro papillary architecture is not previously reported. We report a case of borderline papillary serous adenofibromatous tumor (also called serous adenocarcinofibroma) with extensive micropapillary pattern in a 27 year-old married woman. She was infertile and presented with diff...

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...

We investigate the complexation of ampholytic poly(N-isopropylacylamide)-block-poly- (L-glutamic acid)-block-poly(L-lysine) (PNiPAM-b-PLG-b-PLLys) triblock copolymers and PNiPAM-block-(PLG-co-PLLys) diblock copolymers with counter charged anionic and cationic surfactants. Both triblock and diblock copolymers are able to selectively form complexes through either L-glutamic acid-cationic surfacta...

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...