In this paper we have studied the effect of free convection on the heat transfer and flow through variable porous medium which is bounded by two vertical parallel porous plates. In this study it is assume that free stream velocity oscillates with time about a constant mean. Periodic temperature is considered in the moving plate. Effect of different parameters on mean flow velocity, Transient ve...

transmission of blast waves is a complex phenomenon and the characteristics vary with blast design parameters and geo-technical properties of medium. frequency of vibration and triggering component for structural excitation generally quantifies safe vibration magnitude. at closer distance or higher elevations than the blast locations, vertical or transverse component will be the first arrival t...

this study aimed to compare the efficacy of mta and cem cement in class ii furcation defects in human mandibular molars.forty furcation defects were treated in 16 patients with chronic periodontitis. the clinical parameters of probing depth (pd), vertical and horizontal clinical attachment levels (vcal and hcal), open vertical and horizontal furcation depths (ovfd and ohfd), and gingival margin...

advantages and disadvantages of using “stokes parameters” in exploration of inertia-gravity wave properties are discussed in this paper. the survey is carried out on an inertia-gravity wave event (igws in what follows) that occurred over iran from 7 to 9 february 2012. applying this technique for investigation of atmospheric igws was recommended by vincent and fritts (1987) and then developed b...

The aim objective of this study is to investigate the effects of near-field earthquakes on the response of mid-rise buildings with tubular structure.  For this purpose, a 20-story building with a square plan of six by six bays, all with 6 m span, and story height of 3.70 m is considered.  Axial force of columns, shear lag, and inter-story drift values are used as the main response parameters. N...

In this paper, a new version of multi-objective differential evolution with dynamically adaptable mutation factor is used for Pareto optimization of a 5-degree of freedom vehicle vibration model excited by non-stationary random road profile. In this way, non-dominated sorting algorithm and crowding distance criterion have been combined to differential evolution with fuzzified mutation in order ...

The tuned liquid column damper (TLCD) having a uniform cross-sectional tube of U-shaped, occupied with liquid is used as a vibrational response mitigation device. The tuned liquid column ball damper (TLCBD) is a modified TLCD, where, an immovable orifice, positioned at the middle part of the horizontal portion, is replaced by a metal ball. Different studies on the unconstrained optimization per...

Deligeorgis, D., Yannakos, D., and Doxiadis, S. (1973). Archives of Disease in Childhood, 48, 790. Normal size ofliver in infancy and childhood: x-ray study. The longest vertical distance between the upper and lower borders of the liver measured radiologically is suggested for estimating the size of the liver. This parameter, called vertical axis of the liver, was measured in 350 healthy infant...

A performance-based seismic design (PBSD) method is aimed at controlling the structural damage based on precise estimations of proper response parameters. PBSD method evaluates the performance of a building frame for any seismic hazard, the building may experience. Use of this method for vertical irregular building is verified with comparison of conventional method. Vertical irregular frame is ...

Rapid growth in the evolution of wireless technologies and mobile user demands necessitates future wireless communication to be a conjunctive working of several heterogeneous networks with their complementary features. Roaming of mobile terminals with different access interfaces and technologies among dissimilar networks is inescapable depending upon the user demands. Anywhere, anytime, any typ...