نتایج جستجو برای: پروفیلهای کامپوزیتی frp

تعداد نتایج: 5898  

2004
S. H. RIZKALLA

Strengthening of reinforced concrete structures using FRP has emerged as a potential solution to the problems associated with civil infrastructure. Many researchers have reported significant increases in strength and stiffness of concrete structures strengthened with FRP. Nevertheless, possible brittle failures of the strengthened system due to delamination of the FRP strips and/or sheets could...

2012
R. Jayaprakash

Fibre reinforced polymer (FRP) is one of the best retrofitting materials for strengthening due to a number of advantages, such as excellent strength to self-weight ratio, large fatigue resistance capacity, etc. Presently, many different types of FRP models are used in analysis, thereby creating erroneous analytical results. Reinforced concrete (RC) beams with carbon and glass fibrereinforced po...

Journal: :The Journal of biological chemistry 1992
M M Patino W E Walden

Ferritin synthesis is controlled at the translational level in response to cellular iron status. A component of this regulatory system is the ferritin repressor protein (FRP) which binds to the iron-responsive element (IRE) located at the 5' end of all known ferritin mRNAs, thus inhibiting its translation. Antibodies against purified FRP were raised in mouse and used to isolate an FRP cDNA from...

Journal: :Biochemistry 2005
Benfang Lei He Wang Yimin Yu Shiao-Chun Tu

Vibrio harveyi NADPH:FMN oxidoreductase P (FRP(Vh)) is a homodimeric enzyme having a bound FMN per enzyme monomer. The bound FMN functions as a cofactor of FRP(Vh) in transferring reducing equivalents from NADPH to a flavin substrate in the absence of V. harveyi luciferase but as a substrate for FRP(Vh) in the luciferase-coupled bioluminescent reaction. As part of an integral plan to elucidate ...

2008
Amjad J. Aref Wael I. Alnahhal

Fiber Reinforced Polymer (FRP) bridge systems are gaining wide acceptance among bridge engineers. At the same time, FRP bridge systems are relatively expensive when compared to traditional reinforced concrete bridge systems. In this study, the concept of the hybrid FRP-concrete structural systems is applied to a bridge superstructure. The hybrid FRP-concrete superstructure system is intended to...

ژورنال: تحقیقات بتن 2016
الهام علیزاده عبداله مسلمی ورکی مهدی دهستانی,

 اکثر تیرهای مورد استفاده در پل­ها از نوع بتن مسلح بوده که وزن زیادی داشته، مقاومت­شان در قبال خوردگی تا حدودی پائین بوده و امکان اجرای آن­ها به صورت پیش­ساخته وجود ندارد. برای از بین بردن ضعف­ تیرهای بتن مسلح راه­حل­های مختلفی ارائه شده که یکی از آن­ها استفاده از سیستم ترکیبی متشکل از مصالح متداول نظیر بتن و فولاد به همراه صفحات FRP می­باشد که تحت عنوان تیرهای کامپوزیتی نیز شناخته می­شود. تحقی...

Journal: :Biochemistry 2008
Navneet Jawanda Kamran Ahmed Shiao-Chun Tu

Vibrio harveyi luciferase and flavin reductase FRP are, together, a two-component monooxygenase couple. The reduced flavin mononucleotide (FMNH2) generated by FRP must be supplied, through either free diffusion or direct transfer, to luciferase as a substrate. In contrast, single-component bifunctional monooxygenases each contains a bound flavin cofactor and does not require any flavin addition...

2000
John Peterson Valery Trifonov Andrei Serjantov

In this paper, we demonstrate how Functional Reactive Programming (FRP), a framework for the description of interactive systems, can be extended to encompass parallel systems. FRP is based on Haskell, a purely functional programming language, and incorporates the concepts of time variation and reactivity. Parallel FRP serves as a declarative system model that may be transformed into a parallel ...

2015
Omar I. Abdelkarim Mohamed A. ElGawady Mahmoud Reda Taha

The behavior of concrete-filled fiber tubes (CFFT) polymers under axial compressive loading was investigated. Unlike the traditional fiber reinforced polymers (FRP) such as carbon, glass, aramid, etc., the FRP tubes in this study were designed using large rupture strains FRP which are made of recycled materials such as plastic bottles; hence, large rupture strain (LRS) FRP composites are enviro...

2006

The concept of an integrated strengthening and damping retrofit system was proposed to design reinforced concrete (RC) columns for their optimal performance under multi-level earthquake hazards. As illustrated in Figure 1, the system consisted of fiber reinforced polymer (FRP) sheets wrapping around a column and viscoelastic (VE) layers on the FRP sheets. The motion of the outer surface of the ...

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