Biodegradable poly(ester amide) (PEA) biomaterials derived from α-amino acids, diols, and diacids are promising materials for biomedical applications such as tissue engineering and drug delivery because of their optimized properties and susceptibility for either hydrolytic or enzymatic degradation. The objective of this work was to synthesize and characterize biodegradable PEAs based on the α-a...

This thesis details the process taken for the computational modelling of convective heat transfer in porous media with the objective of improving the accuracy of porous continuum models. CFD simulations were performed to predict convective heat transfer resulting from forced flow through highly conductive porous blocks. For the pore-level predictions, an idealized geometric model for spherical-...

the branches of external carotid artery were dissected and studied in six one humped camels.these specimens were preparated from slaughterhouse and fixed in10% formaline. the common carotid artery in one humped camel is divided into three branches , including , occipital artery , internal carotid artery and external carotid artery which in this respect it was similar to that of equine. external...

Awareness of the presence of the accessory renal artery in kidney transplant, treatment of renal artery stenosis, clinical assessment of renal vascular hypertension, radiology and angiography interventions is very helpful. In 30% of cases the accessory renal artery is separated from the abdominal aorta and in most cases, this artery along with the main artery entered to the kidney through t...

An unusual origin of the common interosseous artery is reported in the paper. During educational dissection of a 37-year-old male, a rare variation in the origin of common interosseous artery of the right upper limb was observed. The common interosseous artery directly separated from radial artery. The right anterior interosseous artery is continued from common interosseous artery. Anterior and...

the permeability and tortuosity of pore-scale two and three-dimensional random porous media were calculated using the lattice boltzmann method (lbm). effects of geometrical parameters of medium on permeability and tortuosity were investigated as well. two major models of random porous media were reconstructed by computerized tomography method: randomly distributed rectangular obstacles in a uni...

Sr. Editor. Recientemente se ha publicado el artículo “Niveles de hemoglobina y anemia en gestantes adolescentes atendidas en establecimientos del Ministerio de Salud del Perú, 2009-2012” (1). Los resultados muestran que la tasa de anemia en zonas menores a 1000 metros de altitud sobre el nivel del mar es de 20,7%, sin embargo, los valores en las zonas altoandinas son casi el doble, llegando a ...

unsteady hydromagnetic generalised couette flow of a viscous, incompressible and electrically conducting fluid between two horizontal parallel porous plates darcian channel in the presence of a uniform transverse magnetic field taking hall current and ion-slip into account in a rotating system is investigated. an exact solution of the governing equations is obtained by laplace transform techniq...

This article is concerned with the analysis of blood flow through arterial catheterization (widening of arteries by a balloon in the presence of mild stenosis), when blood is represented by MHD Newtonian fluid. The mild stenosis approximation is used to solve the problem. A uniform magnetic field is applied perpendicular to the porous artery. A mathematical model is developed and analyzed by us...

in this work a glass micromodel which its grains and pores are non-uniform in size, shape and distribution is considered as porous medium. a two-dimensional random network model of micromodel with non-uniform pores has been constructed. the non-uniformity of porous model is achieved by assigning parametric distribution functions to pores throat and pores length, which was measured using image a...