Enhancement of strength and ductility is the main reason for the extensive use of FRP (fiber reinforced polymer) jackets to provide external confinement to reinforced concrete columns especially in seismic areas. Therefore, numerous researches have been carried out in order to provide a better description of the behavior of FRP confined concrete for practical design purposes. This study present...

The distribution of Gazella bennetti in Iran is reviewed. The species is commonly said to be confined to the southeastern part of the country, but is actually widespread over suitable areas, east of the Zagros Range and south of the Alborz. In the north and west of this range, there is a hitherto undescribed subspecies, which is named and diagnosed for the first time in this paper; its similari...

Contaminated sediments contain a variety of volatile and semi-volatile hydrocarbons, which are released into the air, when these sediments are stored in confined disposal facilities (CDFs). Polycyclic aromatic hydrocarbons (PAHs) are one class of sediment contaminants that of great interest, since they are carcinogenic and pose a significant health hazard. Hence quantitative data and models are...

The spectra and form factors of exclusive semi-leptonic decays of B-meson are analyzed, taking account of confined effects of quarks by the Covariant Oscillator Quark Model. The predicted B → (D,D)lν̄l spectra with the conventional value of Vcb are fit well to the highprecision experiment. It is also shown the values of Vcb and Vub obtained through decay widths for the B → (D,D, ρ)lν̄l processes ...

Molecular dynamics simulations are used to study hypervelocity impacts of an ultrathin flyer plate with a semi-infinite two-dimensional model diatomic molecular solid. These hypervelocity impacts are shown to produce a dissociative phase transition from a molecular to a close-packed solid in the target material. Although this close-packed phase persists for less than 10 picoseconds and is confi...

The correlation-driven metal-insulator (Mott) transition at a solid surface is studied within the Hub-bard model for a semi-infinite lattice by means of the dynamical mean-field theory. The transition takes place at a unique critical strength of the interaction. Depending on the surface geometry, the interaction strength and the wave vector, we find one-electron excitations in the coherent part...

Tunnel-boring machine (TBM) tunnelling through an aquifer will generate excess pore water pressures in the soil around tunnel face. Accurately predicting magnitude of is significant because it directly determines effective face support pressure. In this study, analytical solution for transient cylindrical flow caused by TBM considering elastic storage developed. Furthermore, a quasi-static to c...

the purpose of this study was to evaluate the species-environment relationships in arid and semi-arid rangelandsof nodushan, yazd. the plant species cover and the environmental variables were measured at 9 sites. soil sampleswere taken for measurement of 12 attributes in 0-10 cm and 10-80 cm layers. vegetation was classified using twowayindicator species analysis (twinspan). data was analyzed u...

Transition metal catalysis plays an important role in both industry and in academia where selectivity, activity and stability are crucial parameters to control. Next to changing the structure of the ligand, introducing a confined space as a second coordination sphere around a metal catalyst has recently been shown to be a viable method to induce new selectivity and activity in transition metal ...

We develop an analytical method for studying the properties of a noninteracting wormlike chain (WLC) in confined geometries. The mean-field-like theory replaces the rigid constraints of confinement with average constraints, thus allowing us to develop a tractable method for treating a WLC wrapped on the surface of a sphere, and fully encapsulated within it. The efficacy of the theory is establi...