background and objective: cerebral arteriovenous malformation (cavm) hemodynamic is disease condition, results changes in the flow and pressure level in cerebral blood vessels. measuring flow and pressure without catheter intervention along the vessel is big challenge due to vessel bifurcations/complex bifurcations in arteriovenous malformation patients. the vessel geometry in cavm patients are...

a = index referring to the lumped mass ‘a’ b = index referring to the lumped mass ‘b’ Fxi = X component of the inertial force acting on the i-th lumped mass (i = a or b) Fyi = Y component of the inertial force acting on the i-th lumped mass (i = a or b) Fzi = Z component of the inertial force acting on the i-th lumped mass (i = a or b) R = half of the distance between the two arms (bars) in par...

in this study a new minimum lumped electrical model of total circulatory system through numerical solutions to approximate the response of the human circulatory system was presented. among five existent ventricular elastances as activity function of heart pumps, a more accurate model was chosen as well as the operation of baroreflex system to accommodate variations in heart rate and systemic va...

Current distribution on a 2-layer PCB with lumped circuits is estimated by measuring the near electric field. In this method, the current estimation model is made without considering the electrical parameters of lumped circuits. Experimental results are demonstrated and compared with the numerical results, confirming the validity of this method. key words: measurement, current distribution, nea...

The lumped constant of the deoxyglucose method was determined by the steady-state, model-independent method in the brain of normal conscious rats with arterial plasma glucose concentrations varying from normoglycemia (i.e., 8 mM) to hyperglycemia (i.e., 31 mM). The lumped constant for brain was found to decrease very gradually with increasing arterial plasma glucose concentration from a value o...

1024x768 normal 0 false false false en-us x-none ar-sa background and objective: numerical modeling of biological structures would be very helpful tool to analyze hundreds of human body phenomena and also diseases diagnosis. one physiologic phenomenon is blood circulatory system and heart hemodynamic performance that can be simulated by utilizing lumped method. in this study, we can predict hem...

AfMtmct-Kuroda’s identities, wfdch are used in anafysfs and syntheafs of dfatributed transndssion ffne cirad~ may be appfied to mixed lumped and distributed ChCUitS. It is ShOWO that circuits COOSfStiOg Of ca.vcade connections of lumped reactance and nnfform tranandssion Ifnea are equivalent to circuits consisting of a cascade connection of nomndform transmission Iiie-aj lumped reactancq and id...