Author:Patanaik, A; Anandjiwala, RDDate:Mar 2008This paper presents the results from a study on the water permeability behaviour of nonwovens produced from the hemp fibres. Three different types of needle-punched nonwovens are produced by varying the feed rate of fibres during the ...Read more
Author:Loveday, Philip W; Long, Craig S; Forbes, A; Land, KDate:Mar 2008An intra-cavity adaptive mirror is required to compensate for time-dependent phase aberrations to the laser beam, such as those caused by thermal lensing. A piezoelectric unimorph design can provide a small, low-cost deformable mirror for ...Read more
Author:Cannoo, BR; Gledhill, Irvy MA; Cooper, Antony K; Greben, JMDate:Mar 2008The protection of coastal structures is important to South Africa. The dynamics of breakwaters is a topic that is becoming amenable to numerical study, in terms of the motion of multiple interlocking structures under wave action. In this ...Read more
Author:Shatalov, M; Fedetov, I; Tenkam, HMDDate:Mar 2008Modern theories of one-dimensional bar vibrations account for lateral effects, which are substantial in the case of relatively thick bars. For example, in the Rayleigh-Love and Rayleigh-Bishop models the lateral displacements are supposed to ...Read more