In this paper, an optimum design of concrete-steel mixed frames under time-history loadings was formulated as optimization problem. The behavior a structure is different from the steel and reinforced concrete structures because vertically irregular in their mass, stiffness damping each part. Moreover, current codes available commercial software packages do not present solutions for such structu...

The aim of this study was to investigate the effect of loading rate on the micro-mechanical properties of oak (Quercus petraea) wood. Bending strength, modulus of elasticity in bending, compression strength parallel to the grain and tensile strength parallel to the grain were determined using microsized test samples. Three different loading rates were used for each test. The first loading rates...

Creep strain experiments on uncemented reservoir sands suggest that the time-dependent component of deformation can be modeled using linear viscoelasticity theory. The standard approach to solving for the values of the appropriate model parameters is to fit creep strain data as a function of time. However, by writing the creep compliance function in terms of strain-rate rather than strain, it i...

[1] The tectonic evolution of Mars has been driven primarily by the interaction of Tharsisinduced loading stresses with a uniform contractional stress field, leading to global assemblages of graben and wrinkle ridges. Until recently, strike-slip faults have appeared to be largely absent from the tectonic record. We here present evidence for a new set of Noachian to Early Hesperian strike-slip f...

the adsorption thermodynamic characteristic of cu2+ from aqueous solution onto humin andalso humic acid from a typical black soil in northeast china were examined at three different temperatures(298, 318 and 338 k) by batch isotherm experiments. results showed that humin was structurally differentfrom humic acid. the increase of temperature had a positive effect on the adsorption process. freun...

background: the superiority of antipyretic efficacy of high dose rectal acetaminophen is not well established yet. objectives: the present study aimed to compare the antipyretic effectiveness of high loading dose (30 mg/kg) and standard dose (15mg/kg) of rectal acetaminophen in febrile children. patients and methods: this triple blind randomized clinical trial was conducted on 76 patients aged ...