Iterative method to obtain semi-circle variables from bioimpedance measurements for Cole's Modeling.

Bioimpedance Spectroscopy measurements and Cole-Cole models are commonly used to characterize biological systems. Cole-Cole model parameters may be obtained by fitting the measured bioimpedance data into a semicircle. This work proposes an iterative method to approximate a bioimpedance dataset to a Cole-Cole model analysis using only three points.

Electrical Impedance to Easily Discover Undeclared Freeze-thaw Cycles in Slaughtered Bovine Meat.

A portable electrical impedance spectroscopy device was developed to monitor the bioimpedance resistive component of bovine meat by injecting a sinusoidal current of 1 mA at 65 kHz. Both right and left longissimus dorsi muscles were trimmed from 4 slaughtered cows. The left muscle portions were frozen to -18 °C for 7 days while the right ones were meantime maintained at 5 °C.

Possible Assessment of Calf Venous Pump Efficiency by Computational Fluid Dynamics Approach.

Three-dimensional simulations of peripheral, deep venous flow during muscular exercise in limbs of healthy subjects and in those with venous dysfunction were carried out by a computational fluid-dynamics (CFD) approach using the STAR CCM + platform. The aim was to assess the effects of valvular incompetence on the venous calf pump efficiency. The model idealizes the lower limb circulation by a single artery, a capillary bed represented by a porous region and a single vein.

Left colon obstruction due to non-reducible Spigelian hernia of the right side. Report of a case and literature review.

Aim: Describe a rare case of intestinal obstruction due to sigmoid colon incarceration into a right Spigelian hernia and provide a literature review about its surgical management.

Material Of Study: An 88 year-old man presented with a 3-day history of right lower quadrant pain and abdominal distension. Clinical examination revealed a not reducible palpable mass on right side of the anterior abdominal wall.

[Thyroid microcarcinoma: our experience].

The thyroid microcarcinoma is definited differentiated carcinoma of max 1 cm in diameter. We have reviewed clinical and histopathological results of 54 consecutive patients with papillary and follicular thyroid microcarcinoma and operated in the our clinic in the period 1985 to 2004. Several variables, such as older age, multifocality, bilateral disease, and extrathyroidal spread at initial assessment, may have some adverse prognostic significance.