This study investigates the strength enhancement of Tin Slag Polymer Concrete (TSPC) under hybrid GFRP and CFRP confinement in comparison with mono on TSPC circular short column samples. Hybrid FRP is prepared by wrapping followed both 1 layer using epoxy Sikadur 330 as matrix binders 50 mm overlap. Compression test was performed unconfined (TSPC-UC), (TSPC-GF), (TSPC-CF) (TSPC-HB) 1mm/ min loa...

Abstract Fibre metal laminates (FMLs) are attractive construction materials, especially for use in aerospace and transport facilities. Throughout their service life, thin-walled structures made of FMLs exposed to static dynamic loads, as well corrosion the unfavourable influence environmental conditions. The paper presents an experimental analysis combined mechanical long-term behaviour carbon-...

This paper presents a study of the shear capacity reinforced concrete (RC) beams strengthened in with externally bonded (EB) fiber polymer (FRP) composites, based on performance existing published tests. The main objective this is to create comprehensive overview different strengthening configurations and failure modes observed experimental In addition, influence following parameters efficiency...

Cost-effective rehabilitation and/or strengthening of steel structures currently demanded by the telecommunications industry and transportation departments. Rehabilitation is often required due to crosssection losses resulting from corrosion damage and strengthening may be required due to changes in the use of a structure. Current strengthening techniques, have several disadvantages including t...

هديكچ ط ي لاس اه ي خا ي ر پ ي تفرش لباق هظحلام ا ي رد طابترا اب لولس ه ا ي نب ي دا ي لصاح هدش تسا هک ون ي د شخب هار اهراک ي ون ي ن نامرد ي رد ب ي رام ي اه ي بعص جلاعلا م ي .دشاب ا ي ن لولس اه هک رد مامت ناگرا ي مس اه ي دنچ لولس ي روضح ،دنراد اناوت يي سقت ي م و دبت ي ل هب لولس اه يي سب ي را صاصتخا ي ار هتشاد و نچمه ي ن رداق هب اج ي زگ ي ن ...

RATIONALE GTP cyclohydrolase I (GTPCH-1) is the rate-limiting enzyme involved in de novo biosynthesis of tetrahydrobiopterin (BH(4)), an essential cofactor for NO synthases and aromatic amino acid hydroxylases. GTPCH-1 undergoes negative feedback regulation by its end-product BH(4) via interaction with the GTP cyclohydrolase feedback regulatory protein (GFRP). Such a negative feedback mechanism...

برخی از گونه ‏های زنبور تریکوگراما، دارای نوعی همزیستی با باکتری Wolbachia هستندکه باعث القاء بکرماده ‏زایی در آنها می‏شود. جمعیت‌هایی این پارازیتوئید تخم آفات که نتاج ماده بیشتری تولید می‌کنند، می‌توانند بالقوه توان بالاتری برخوردار باشند. پس شناسایی یک جمعیت بومی آلوده به ولباکیا Trichogramma brassicae، بررسی‏ هایی منظور ارزیابی توانایی‌های تک‏جنسی (A) قیاس جمعیت‌‏های دوجنسی طبیعی (B) و تغذیه...

In the present study, numerical analysis of concrete columns wrapped with different composite materials is conducted. Different fibre reinforced plastic sheets such as CFRP, BFRP, HFRP, AFRP, GFRP and steel wrapping are taken into consideration. A cylindrical specimen representing a short column modelled Total deformation, Directional deformation Equivalent stresses in core shell were obtained ...