Journal of the American Society of Mechanical Engineers.

Mode of access: Internet.

Bibliographies of interest to the atomic energy program /

"May 1965."

Bibliographies of interest to the atomic energy program : [Revision 1, Supplement 1] /

"November, 1959."

Geothermal energy program summary : fiscal year 1988 /

"U.S. Department of Energy, Programs in Renewable Energy"--Cover.

Bibliographies of interest to the atomic energy program : 1962 through 1966 /

Mode of access: Internet.

Bibliographies of interest to the atomic energy program /

Includes bibliographical references.

Bibliographies of interest to the atomic energy program /

"November 1964."

Engineering education.

Engineering index monthly (1984)

Pocket-book of mechanics and engineering.

Mode of access: Internet.

Geothermal energy update.

"Supplement to the bibliography, Geothermal resources."

Electromechanical energy conversion.

Includes bibliographies.

Bibliographies of interest to the atomic energy program /

"May 1958."

Mechanical engineers' handbook.

Editors: 1st-5th ed., L.S. Marks.; 6th ed., T. Baumeister.

Analysis of the free vibration of rectangular plates with central cut-outs using the discrete Ritz method

We present an analysis of the free vibration of plates with internal discontinuities due to central cut-outs. A numerical formulation for a basic L-shaped element which is divided into appropriate sub-domains that are dependent upon the location of the cut-out is used as the basic building element. Trial functions formed to satisfy certain boundary conditions are employed to define the transverse deflection of each sub-domain. Mathematical treatments in terms of the continuities in displacement, slope, moment, and higher derivatives between the adjacent sub-domains are enforced at the interconnecting edges. The energy functional results, from the proper assembly of the coupled strain and kinetic energy contributions of each sub-domain, are minimized via the Ritz procedure to extract the vibration frequencies and. mode shapes of the plates. The procedures are demonstrated by considering plates with central cut-outs that are subjected to two types of boundary conditions. (C) 2003 Elsevier Ltd. All rights reserved.

Advances in vascular tissue engineering

Coronary and peripheral artery bypass grafting is commonly used to relieve the symptoms of vascular deficiencies, but the Supply Of autologous artery or vein may not be sufficient or suitable for multiple bypass or repeat procedures, necessitating the use of other materials. Synthetic materials are suitable for large bore arteries but often thrombose when used in smaller arteries. Suitable replacement grafts must have appropriate characteristics, including resistance to infection, low immunogenicity and good biocompatability and thromboresistance, with appropriate mechanical and physiological properties and cheap and fast manufacture. Current avenues of graft development include coating synthetic grafts with either biological chemicals or cells with anticoagulatory properties. Matrix templates or acellular tubes of extracellular matrix (such as collagen) may be coated or infiltrated with cultured cells. Once placed into the artery, these grafts may become colonised by host cells and gain many of the properties of normal artery. Tissue-engineered blood vessels may also be formed from layers of human vascular cells grown in culture. These engineered vessels have many of the characteristics of arteries formed in vivo. Artificial arteries may be also be derived from peritoneal granulation tissue in body bioreactors by adapting the body's natural wound healing response to produce a hollow tube. (C) 2003 Elsevier Inc. All rights reserved.