Objectives: Senility and reduction of physical activities usually cause undesirable physical and even mental effects on the adults. Since physical activities can improve physical even mental condition, and consequently bring about more independence for adults, the purpose of this paper was to find out the effects of some of yoga practices on some factors of physical preparation i...

Exergy analysis is a method of evaluating the contribution proportion of each process on transmission of initial availability of the system and determining the positions of useful energy losses. In this research exergic analysis of an internal combustion engine equipped with turbocharger and intercooler is attended. To do this, at first, the procedure of performance simulation of the system com...

let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...

in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...

in this investigation the effect of external field on the electron density of nanostructures of cds, cdse, cdte, gaas and polymeric structure of three, four, five and six units of cds as a kind of nanosolar cells has been studied theoretically. as modeling this system in nanodimension, molecular structures has used. specific properties of molecular structures permit us to consider different sym...

Having a mild and humid climate, Gilan province is closer to the comfort zone than other regions of Iran. In addition, the use of radiation, wind, precipitation and humidity components in the spatial organization of native houses has led to the formation of a semi-open space next to the closed space. In general, the placement of spaces in this climate is such that there is no clear border betwe...