A simple method is proposed to construct the spectral zeta functions required for calculating the electromagnetic vacuum energy with boundary conditions given on a sphere or on an infinite cylinder. When calculating the Casimir energy in this approach no exact divergencies appear and no renormalization is needed. The starting point of the consideration is the representation of the zeta function...

Dietary differences exist between infant and adult female non-human primates. These differences are considered to be related to the low ability of infants to bite, handle, and obtain food items. This study aimed to provide a comprehensive examination of how the physical properties of food items (fracture toughness, size, processing, and height) influence food selection by infant primates. In th...

spherical Bessel-function of the first kind and order n complex wave number (po~/2q) ~ wave number in a Hookean material non-negative integer spherical polar coordinate radius of plates of orthogonal rheometer radius of inner hemisphere of balance rheometer radius of outer hemisphere of balance rheometer time physical components of displacement physical components of velocity cartesian coordina...

The instrument for determination the texture with air puff’s Foodtexture Puff Device (FPD) is a new device that yields contactless, fast, easy and non-destructive rheological measurements of food products. The instrument applies a controlled air pulse to the surface of a food product, while a laser distance sensor measures the deformation. This approach can be considered as an alternative metho...

To mimic in vivo vibration of vocal fold cells, we studied the controllability and range of frequency, acceleration, duration, and shear stress in a new bioreactor attachment. The custom multiwell disc appliance fits into a commercially built rheometer, together termed a torsional rheometer bioreactor (TRB). Previous attachments to the TRB were capable of 50–100 Hz vibrations at relatively high...

In this paper we present a simpliied formulation of the necessary conditions for optimal controls of principal kinematic systems evolving on Lie groups. This class of systems is particularly meaningful because a number of diierent types of locomotion systems, such as kinematic snakes, paramecia, inchworms, mobile carts, and even the falling cat, can be represented in this form. Furthermore, it ...