One of the signs of the cerebellar ocular motor syndrome is the inability to maintain horizontal and vertical fixation. Typically, in the presence of cerebellar atrophy, the eyes show horizontal gaze-evoked and vertical downbeat nystagmus. We investigated whether or not the cerebellar ocular motor syndrome also includes a torsional drift and, specifically, if it is independent from the drift in...

Purpose: To compare the efficacy and phacoemulsification parameters of torsional mode versus the combined torsional and longitudinal ultrasound mode in hard cataract of Egyptian patients. Methods: This randomized comparative study evaluated eyes 1, 7, and 30 days after phacoemulsification with an Infiniti Vision System using the torsional mode versus the combined torsional (100%) and longitudin...

AIM To compare the intraoperative performance and postoperative outcome after microcoaxial torsional phacoemulsification using either a Kelman or balanced phaco tip. METHODS Cataracts were treated using 2.2 mm microcoaxial torsional phacoemulsification using either a 45-degree mini-flared Kelman(®) or a 45-degree Intrepid(®) Balanced phaco tip. Intraoperative measurements included total ultra...

Single-molecule study of phenylenevinylene oligomers revealed distinct spectral forms due to different conjugation lengths which are determined by torsional defects. Large spectral jumps between different spectral forms were ascribed to torsional flips of a single phenylene ring. These spectral changes reflect the dynamic nature of electron delocalization in oligophenylenevinylenes and enable e...

Nonlinear torsional-flexural modal ;nteractions of a torsionally excited cantilever beam are studied in the case of one-to-one internal resonance. Discrete two DOF model is derived from the equations of motion for the continuous canthwer beam by using the Galerkin mode approx;mat;on method. The method of averaging is used to obtain the approx;mat;on to the response of the discrete model. Steady...

The article shows the effect of torsional rigidity of beam elements onto spatial work of bridges, floorings and other plate-ribbed systems It is shown that, in determining the torsional rigidity using existing methods it is necessary to have spatial spiral cracks, but torsional rigidity when normal cracks is not researched. A method is described for determining the torsional rigidity of reinfor...

2 Background Theory on Modeling 4 2.1 Modeling of 2DOF systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1.1 Schematics and block diagram of experimental set up . . . . . . . . . 4 2.1.2 Dynamic model for 2DOF system . . . . . . . . . . . . . . . . . . . . 5 2.1.3 Comparison of rectilinear and torsional system . . . . . . . . . . . . . 6 2.2 Dynamic response of second order sy...