Hollow-sapphire and metal-dielectric-coated hollow-glass waveguides have been used to deliver CO(2) laser power for industrial laser applications. The transmission, bending loss, and output-beam properties of these waveguides are described. The bore sizes of the hollow-sapphire waveguides were 1070 and 790 μm, and the hollow-glass waveguide had a bore of 700 μm. The waveguides ranged in length ...

OBJECTIVE Dilated cardiomyopathy (DCM) is associated with a progressive deterioration in cardiac function. We hypothesised that some of the deleterious effects of DCM could be reduced by mechanically limiting the degree of cardiac dilatation. METHODS A Transonic 20A cardiac output (CO) flow-probe was implanted in the pulmonary artery of 12 adult (52 +/- 4 kg) sheep. Early heart failure was cr...

Fundamental to any ballistic armour standard is the reference projectile to be defeated. Typically, for certification purposes, a consistent and symmetrical bullet geometry is assumed, however variations in bullet jacket dimensions can have far reaching consequences. Traditionally, characteristics and internal dimensions have been analysed by physically sectioning bullets--an approach which is ...

Fully developed turbulent pipe flow at Re=11300 as well as Re=5300 is measured by PIV using water as working fluid. Excellent agreement with DNS (Direct Numerical Simulation) by Satake (2000) is achieved by choosing optimum measurement parameters such as spatial resolution, time separation of two images, and number of samples. The test section is 6.7m long stainless steel pipe with transparent ...

Installation of jacket platforms requires simultaneous and combined operations multiple assets. Once the whole process has to be planned, it is necessary predict in a fast reliable way possible weather limitations that may occur during operations. The paper will present major challenges this unusual innovative Dynamic Positioning analysis which been carried out for Ana Jacket installation. obta...

Organic Rankine cycle (ORC) has become a promising energy harvesting technique to recover thermal from low-grade heat sources. In this study, lab-scale ORC system been designed, constructed, and tested investigate the potential of utilizing hot water, which is used simulate jacket water internal combustion engines. The employs an oil-free scroll expander with R245fa as working fluid. A wide ran...