Porosity has been shown to affect the fatigue life of bone cements, but, although vacuum mixing is widely used to reduce porosity in the clinical setting, results have been mixed and the effects of porosity are not well understood. The aim of this study was to investigate the effects of porosity using stress analysis and fracture mechanics techniques. The stress concentrations arising at voids ...

Pupillary dilatation has recently been reported as a physiological measure of degree of attention paid to environmental stimuli (Hess & Polt, 1960, 1964). Hess and Polt's research has operationally defined one variable and has provided data that allows researchers to speculate about several others. This variable is interest-disinterest. The purpose of the present investigation was to examine th...

[1] Numerous single-hole and cross-hole pneumatic injection tests have been conducted in unsaturated fractured tuff at the Apache Leap Research Site (ALRS) near Superior, Arizona. Single-hole tests have yielded values of air permeability at various locations throughout the tested rock volume on a nominal scale of 1 m. Cross-hole tests have yielded equivalent air permeabilities (and air-filled p...

The layer-by-layer building methodology used within the powder bed process of Selective Laser Melting facilitates control over the degree of melting achieved at every layer. This control can be used to manipulate levels of porosity within each layer, effecting resultant mechanical properties. If specifically controlled, it has the potential to enable customisation of mechanical properties or de...

Exact solution of an unsteady MHD flow of elastico-viscous fluid through a porous media in a tube of spherical cross section under the influence of magnetic field and constant pressure gradient has been obtained in this paper. Initially, the flow is generated by a constant pressure gradient. After attaining the steady state, the pressure gradient is suddenly withdrawn and the resulting fluid mo...

Abstract—Exact solution of an unsteady flow of elastico-viscous electrically conducting fluid through a porous media in a tube of elliptical cross section under the influence of constant pressure gradient and magnetic field has been obtained in this paper. Initially, the flow is generated by a constant pressure gradient. After attaining the steady state, the pressure gradient is suddenly withdr...

Abstract—Exact solution of an unsteady flow of elastico-viscous fluid through a porous media in a tube of spherical cross section under the influence of constant pressure gradient has been obtained in this paper. Initially, the flow is generated by a constant pressure gradient. After attaining the steady state, the pressure gradient is suddenly withdrawn and the resulting fluid motion in a tube...

While glassy materials can be made from virtually every class of liquid (metallic, molecular, covalent, and ionic), to date, formation of glasses in which structural units impart porosity on the nanoscopic level remains undeveloped. In view of the well-established porosity of metal-organic frameworks (MOFs) and the flexibility of their design, we have sought to combine their formation principle...

1. Berger Z, Dalton L. Coping with a cleft: Psychosocial adjustment of adolescents with a cleft lip and palate and their parents. Cleft Palate Craniofacial J. 48:435–443 Dec 2009 2. Kahneman D, Beatty J (1966) Pupil diameter and load on memory. Science 154:1583–5. 3. Hess EH, Polt JM (1960) Pupil size as related to interest value of visual stimuli. Science 132:349–50 4. Winn B, Whitaker D, Elli...

INTRODUCTION Pregnancy and childbirth are generally regarded as a turning point for women even though it is not an illness. This is because the physiological and psychosocial adaptation can bring about stress and anxiety. Ontologically a pregnant woman is not merely an object that can be classified as a primigravida or according to her obstetric condition. The contention is that she is also a d...