In pancreatic survey, quantitative and morphological characteristics could be fundamental variables for the evaluation of some structures. The aim of this study was the application of stereological methods for estimation of quantitative parameters and morphological evaluation of the pancreas in chickens. Ten adult male and ten adult female native chickens were used in this study. Routine tissue...

The validity of the methods used for determination of muscle mass has not been evaluated previously. We determined muscle mass by estimating muscle volume with assumption-free stereological techniques applied to magnetic resonance imaging (MRI) in 18 healthy untrained subjects (6 women, 12 men) aged 41 yr (29-64 yr; median, range). Muscle mass was also estimated by measuring leg circumference a...

Amiodarone is used in treatment of cardiac arrhythmias. Therapeutic use of amiodarone is limited by its side effects, including pulmonary toxicity. Human Placenta Extract (HPE) contains a variety of bio-active substances. Thus, the present study aimed to quantitatively evaluate the protective effects of HPE on the structural lung changes induced by amiodarone using stereological methods. Spragu...

B. Lucini, A. Patella and C. Pica a Physics Department, Swansea University, Singleton Park, Swansea SA2 8PP, UK b Scuola Normale Superiore, Piazza dei Cavalieri 27, 56126 Pisa, Italy c INFN Pisa, Largo B. Pontecorvo 3 Ed. C, 56127 Pisa, Italy d Physics Department, Brookhaven National Laboratory, Upton, NY 11973, USA Abstract On a compact space with non-trivial cycles, for sufficiently small val...

We discuss a class of models of neutrino masses and mixings with inverse hierarchy based on a broken U(1)F flavour symmetry with charge Le−Lμ−Lτ . The symmetry breaking sector receives separate contributions from flavon vev breaking terms and from soft mass breaking in the right handed Majorana sector. The model is able to reproduce in a natural way all observed features of the charged lepton m...

We present numerical studies of atomic transport in 3D and 1D models for a mode-locked, pulsed atom laser as realized by Anderson and Kasevich [Science 281 (1998) 1686] using an elongated Bose condensate of 87Rb atoms poured into a vertical optical lattice. From our 3D results we ascertain in a quantitative manner the role of meanfield interactions in determining the shape and the size of the p...

Claudia Acquisti, Paolo Allegrini, Patrizia Bogani, Marcello Buiatti, Elena Catanese, Leone Fronzoni, Paolo Grigolini, Giuseppe Mersi, Luigi Palatella Dipartimento di Biologia Animale e Genetica dell’Università degli Studi di Firenze, Via Romana 17, 50125 Firenze, Italy Istituto di Linguistica Computazionale del Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Via Moruzzi 1, San ...

Systematic sampling is widely used in stereology. Practical stereology is commonly based on measurements on serial sections and grids of quadrats, cycloids or points superimposed on sections. The precision of estimators based on systematic measurements can be assessed, using the so-called transitive methods due to [9]. The use of the transitive methods in stereology has been discussed in a seri...

Stereology has been earlier defined by Wiebel (1970) to be: “a body of mathematical methods relating to three dimensional parameters defining the structure from two dimensional measurements obtainable on sections of the structure.” SHTEREOM I is a simple windows-based software for stereological estimation. In this first part, we describe the implementation of the number and volume estimation to...

This study has been designed to estimate the volume fraction of the brain ventricles volume to total brain volume and to correlate them with gender and age in normal subjects. Cranial computed tomography (CT) images of 80 normally evaluated subjects (five female and five male for each decade) were selected from 1,073 CT examinations. The volumes of total brain, cerebral aqueduct, fourth, third,...