Abstract Despite Lucretius’ observations about fertility and marriage at the end of book 4, Epicurean view on procreation is to a great extent still uncharted territory, due shortage textual evidence other than Lucretius. An important, but often neglected source information can be found in few remaining columns the, unfortunately rather badly preserved, Herculaneum papyrus PHerc . 908/1390, con...

We study “distance spheres”: the set of points lying at constant distance from a fixed arbitrary subset $K$ $[0,1]^d$. show that, away regions where is “too dense” and small volume, we can decompose $[0,1]^d$ into finite number sets on which spheres be “straightened” subsets parallel $(d-1)$-dimensional planes by bi-Lipschitz map. Importantly, constants are independent $K$.

The detection of broken rotor bars in three-phase squirrel cage induction motors by means of current signature analysis is presented. In order to diagnose faults, a Neural Network approach is used. At first the data of different rotor faults are achieved. The effects of different rotor faults on current spectrum, in comparison with other fault conditions, are investigated via calculating Power ...

PURPOSE The optic nerve (ON) sheath's role in limiting duction has been previously unappreciated. This study employed magnetic resonance imaging (MRI) to demonstrate this constraint on adduction. METHODS High-resolution, surface coil axial MRI was obtained in 11 normal adults, 14 subjects with esotropia (ET) having normal axial length (AL) < 25.8 mm, 13 myopic subjects with ET and mean AL 29....

Introduction Success of root canal treatment depends on several factors; among which, maintaining the original canal path during mechanical preparation is extremely important. This in vitro study aimed to compare apical transportation using RaCe NiTi rotary system and precurved stainless steel (SS) hand files in a reciprocating handpiece. Methods and Materials Mesiobuccal canals of 40 extract...

We give a simple new proof for the straightening law of Doubilet, Rota, and Stein using a generalization of the Laplace expansion of a determinant.

A nano coaxial rotor was designed, fabricated and studied experimentally at an ultralow Reynolds number ranging from 5000 to 20,000. The Minimum Induced Loss theory was employed to optimize the geometry of nano coaxial rotor with the introduction of weights to take into account the interference of upper rotor and lower rotor. The chord and twist distributions of both rotors were achieved as a r...

This work deals with effects of asymmetric stiffness on the dynamic behaviour of the rotor system. The analysis is presented through an extended Lagrangian Hamiltonian mechanics on the asymmetric rotor system, where symmetries are broken in terms of the rotor stiffness. The complete dynamics of asymmetries of rotor system is investigated with a case study. In this work, a mathematical model is ...