due to lack of knowledge management system in the organization of technical and vocational university of iran (tvuni) and losing good employees because of retirement and substitution causes huge amount of costs to replace the similar expertise. there is no any suitable system in the tvuni to store, to document, and to distribute knowledge. based on the university’s features such as it has diffe...

throughout this dissertation r is a commutative ring with identity and m is a unitary r-module. in this dissertation we investigate submodules of multiplication , prufer and dedekind modules. we also stat the equivalent conditions for which is ring , wher l is a submodule of afaithful multiplication prufer module. we introduce the concept of integrally closed modules and show that faithful mu...

Background : Basil known as Ocimum basilicum is one of the most popular aromatic herbs in daily diet to which several beneficial effects were attributed in herbal medicine. The aim of this study was firstly to compare the antibacterial activity of the essential oils of white and red varieties of basil in invitro condition and to choose the superior variety with higher antimicrobial potential. S...

introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...

this study was intended to analyze the listening tapescripts of the elementary and pre-intermediate levels of total english textbooks from the pragmatic dimension of language functions and speech acts in order to see whether the listening tasks are pragmatically informative or not. for this purpose, 8 conversations from the two books were selected randomly, and then, the two pragmatic models of...

this dissertation has six chapter and tree appendices. chapter 1 introduces the thesis proposal including description of problem, key questions, hypothesis, backgrounds and review of literature, research objectives, methodology and theoretical concepts (key terms) taken the literature and facilitate an understanding of national security, national interest and turkish- israeli relations concepts...

Effect of saliva and blood contamination on shear bond strength of cured dentin adhesives Dr. E. Yassini* - Dr. E. Shidoush** *- Professor of Operative Dentistry Dept. - Faculty of Dentistry - Tehran University of Medical Sciences. ** - Dentist. Background and Aim: Achieving good moisture control is a common problem encountered in restorative dentistry, especially after applying and curing dent...