نتایج جستجو برای: glasspolyester composite

تعداد نتایج: 121604  

2008
Hua Chen

This article is intended to be a very brief review on the most basic facts and concepts of heavy fermion physics. A general overview is given as an introduction. In the following part, the mechanism leading to the formation of heavy fermions is explained briefly, and its connection to Kondo effect is emphasized. Then we talk about heavy fermion theories in more detail, where the concepts like K...

Journal: :Appl. Math. Lett. 2009
V. Ryaben'kii Semyon Tsynkov Sergey V. Utyuzhnikov

We formulate and solve a control problem for the field (e.g., time-harmonic sound) governed by a linear PDE or system on a composite domain in Rn. Namely, we require that simultaneously and independently on each subdomain the sound generated in its complement be attenuated to a desired degree. This goal is achieved by adding special control sources defined only at the interface between the subd...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
wang liyong han yuanyuan ding shiwen

ticl4, ammonia, inorganic salts as raw material, nanometer composite-crystal tio2 powders were synthesized by two-step chemical method. precursors were crystallized with different phase and stable composite-crystal tio2 with anatase and rutile phase was prepared at low temperature. quantitative control of crystal phase was realized. remarkable factors including reaction ph value, reaction time,...

Fatemeh Koohpeima, Mina Lesani, Sahar Akbarian,

Objectives: Treatment of chipped or fractured porcelain with composite resin is considered as an economic treatment for minor fractures in ceramics. The aim of this study was to evaluate the effect of different ceramic surface treatments on bond strength of methacrylate-based and silorane-based composite resin to IPS Empress 2. Methods: Sixty IPS Empress 2 ceramic discs were fabrica...

Journal: :razavi international journal of medicine 0
majid akbari associate professor, dental research center, department operative dentistry mashhad university of medical sciences, mashhad, iran hamideh ameri school of dentistry, mashhad university of medical sciences, mashhad, iran hasan jamali school of dentistry, mashhad university of medical sciences, mashhad, iran ali asghar gholami school of dentistry, mashhad university of medical sciences, mashhad, iran sara majidinia assistant professor, dental research center, department operative dentistry mashhad university of medical sciences, mashhad, iran; assistant professor, dental research center, department operative dentistry mashhad university of medical sciences, mashhad, iran. tel: +98-9155191341

conclusions the clinical success rates of endodontically treated premolars restored with fiber posts and direct composite restorations, direct composite restorations with cusp capping and simple direct composite restoration were perfect after one year of follow-up evaluation. background endodontically treated teeth need to be restored in a manner to provide protection for the remaining tooth st...

2015
Narmin Mohammadi Mahmoud Bahari Soodabeh Kimyai Behnam Rahbani Nobar

OBJECTIVES Composite repair is a minimally invasive and conservative approach. This study aimed to evaluate the effect of an additional hydrophobic resin layer on the repair shear bond strength of a silorane-based composite repaired with silorane or methacrylate-based composite. MATERIALS AND METHODS Sixty bar-shaped composite blocks were fabricated and stored in saline for 72 hours. The surf...

2004
Pavel Fileviez Pérez

It is well known, although sometimes ignored, that not only the d = 5 but also d = 6 proton decay depends on fermion mixings. In general we study carefully the dependence of d = 6 decay on fermion mixings using the effective operator approach. We find that without specifying a theory it is impossible to make clear predictions. Even in a given model, it is often not possible to determine all the...

Journal: :Comput. Sci. Inf. Syst. 2009
Mladen Cudanov Ondrej Jasko Milos Jevtic

This paper presents research on influence of information and communication technologies on decentralization of organizational structure. An empirical research was conducted, in which decentralization was described by dominant management style was compared to the level of composite index of ICT adoption. Also, consulting experience in four major Serbian companies was used to further elaborate an...

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