This paper presents an experimental study on circular stirrup-confined concrete specimens under uniaxial and monotonic load. The effects of stirrup volume ratio, stirrup yield strength and concrete strength on damage evolution of stirrup-confined concrete were investigated. The experimental results showed that the strength and ductility of concrete are improved by appropriate arrangement of the...

Although malocclusion correction is the major reason for orthodontic treatment, these braces are occasionally worn aesthetic or fashion reasons. These can be colourful and may of many different shapes than those used treatment. Using false dental offered by quacks could endanger patients' oral health. However, people, particularly young still find fake appealing. We present two cases where colo...

Left braces, introduced by Rump, have turned out to provide an important tool in the study of set-theoretic solutions quantum Yang–Baxter equation. In particular, they allowed construct several new families solutions. A left brace ( B , + ? ) is a structure determined two group structures on set : abelian and satisfying certain compatibility conditions. The main result this paper shows that eve...

the present study assesses the seismic performance of steel moment resisting frames (smfs) retrofitted with different bracing systems. two structural configurations were utilized: ordinary concentrically braces (ocbfs), buckling-restrained braces (brbfs). a 7-story and 18-story steel perimeter smfs were designed with insufficient lateral stiffness to satisfy code drift limitations in high seism...

We describe all left braces of size 8p for an odd prime p?3,7 and validate the number given by Bardakov, Neschadim Yadav in [2]. give a characterization isomorphism classes semidirect product then description is done first describing 8, as conjugacy regular subgroups corresponding holomorph, checking how many non isomorphic are obtained from each one them.

As a generalization of skew braces, the notion trusses was introduced by T. Brzeziński. It shown that every Rota-Baxter group has structure braces V. G. Bardakov and Gubarev. To investigate an analogue groups which trusses, we define systems. We study relationship between systems groups. Furthermore, prove system can be decomposed as direct sum two semigroups. A factorization theorem is proved,...

Most reinforced concrete (RC) frames would exhibit different degrees of damage after mainshock excitations, and these mainshock-damaged RC (MD-RC) are highly vulnerable to severe or even complete collapse under aftershock excitations. In the present study, effectiveness utilizing soft steel damper (SSD) as a passive energy dissipation device for seismic retrofitting MD-RC frame actions was inve...

Nurses have pledged to pull together for patients as the NHS braces itself for another series of strikes by junior doctors.