نتایج جستجو برای: الیاف frp

تعداد نتایج: 7717  

2012
Pragya Shukla Sanjiv Tokekar Suresh Jain N. S. Chaudhari C. L. Liu M. Chandwani M. Puranik Ahmad M. Ibrahim C. C. Yang J. J. Chen

In this paper a new parallel version of finding the Fuzzy Reasoning Path (FRP) using the knowledge representation model, introduced by Chandwani & Chaudhari [1] known as Fuzzy Deduction Graph (FDG) is presented. In an FDG, a systematic method of finding the Fuzzy Reasoning Path (FRP) already exists, which is based on Dijkstra's shortest path framework [2]. Our FRP algorithm is conglomerati...

Journal: :Journal of acquired immune deficiency syndromes 2009
Loic Desquilbet Joseph B Margolick Linda P Fried John P Phair Beth D Jamieson Marcy Holloway Lisa P Jacobson

CONTEXT Immunological similarities have been noted between HIV-infected individuals and older HIV-negative adults. Immunologic alterations with aging have been noted in frailty in older adults, a clinical syndrome of high risk for mortality and other adverse outcomes. Using a frailty-related phenotype (FRP), we investigated in the Multicenter AIDS Cohort Study whether progressive deterioration ...

ژورنال: تحقیقات بتن 2016
فرهنگ فرحبد, مصطفی حبیب پور

معمول­ترین روش مقاوم­سازی ستون­ها با FRP، محصور کردن محیط خارجی آن‌ها است. محصور کنندگی برای اعضای فشاری موثراست و به‌منظور افزایش ظرفیت تحمل بار، یا افزایش شکل­پذیری استفاده می­شود. هدف اصلی در این تحقیق، بررسی مقاوم‌سازی ستون‌های بتن مسلح دایروی با کامپوزیت‌های FRP چند جهته می‌باشد. برای این ‌منظور، ابتدا سه نمونه آزمایشگاهی موجود، عینا در نرم‌ا‌فزار ABAQUS مدل­سازی شدند؛ بدین ترتیب با مقایسه...

2014
Yiyan Lu Shan Li

This paper presents the results of an experimental study into the behavior of concrete-filled steel tube columns confined by fiber-reinforced polymer (FRP). Eleven columns were tested to investigate the effects of the FRP layer number, the thickness of the steel tube and concrete strength on their load capacity and axial deformation capacity. The experimental results indicated that the FRP wrap...

2004
Y C Wang P M H Wong V Kodur

This paper presents the results of an experimental study of the mechanical properties of FRP reinforcement bars, used as internal reinforcement in concrete structures, at elevated temperatures. Two types of FRP bars namely: carbon fibre reinforced polyester bars of 9.5mm diameter and glass fibre reinforced polyester bars of 9.5mm and 12.7 mm diameter were used in the study. For comparison, conv...

2002
D. Stone A. Nanni J. Myers

The objective of this research project is to examine the use of FRP materials for bridge construction. In particular, this project utilizes glass FRP (GFRP) honeycomb sandwich panels. The installation of three bridges, one comprised solely of the FRP panels and two comprised of the FRP panels supported by steel girders, is outlined. Furthermore, results of preliminary testing conducted on the F...

Journal: :Nagoya journal of medical science 1967
K Maeda K Ito A Sekiya Z Kanda

Effects of ouabain and catecholamines_ and their modifications_ by propranolol were investigat ed on the functional refractory period ( FRP ), contractile force and heart rate in isolated atria of guinea-pigs_ and rats.. Catecholamines produced a transient decrease in the FRP of guinea-pig atria, while ouabain caused a continual increase after a latent period of 5 to 10 minutes. The FRP in rat ...

2005
Xi Huang Genda Chen

An innovative concept for normalizing the multiple seismic performance objectives of retrofitted structures was recently introduced by the authors. Referred to as a damping-enhanced strengthening, this integrated damping and strengthening strategy included the bonding component between FRP sheets and viscoelastic layers as well as the anchoring component of FRP sheets into concrete. Although an...

Journal: :Spine 2006
Peter O'Sullivan Wim Dankaerts Angus Burnett Dvir Chen Randy Booth Charlotte Carlsen Adam Schultz

STUDY DESIGN A normative, single-group study was conducted. OBJECTIVE To investigate the flexion relaxation phenomenon in the thoraco-lumbopelvic muscles among a pain-free population when moving from an upright to a slump sitting posture. SUMMARY OF BACKGROUND DATA The presence of the flexion relaxation phenomenon (FRP) of the back muscles is well documented at end-range spinal flexion when...

2012
T. Jiang

An important application of fiber-reinforced polymer (FRP) composites is to provide confinement to reinforced concrete (RC) columns to enhance their loadcarrying capacity. However, this application is generally restricted to short columns as existing design guidelines do not contain provisions for the design of FRP jackets for slender columns. This situation has been due to both the scarcity of...

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