The civil aircraft engine business is complex in operation. Being an asset-heavy operating highly engineering systems, the optimized fleet life-cycle management essential yet challenging. aviation systems are known for critical operation conditions, high-standard reliability demands, and high cost both asset value through-life maintenance services. Civil engines typically require 3 to 4 costly ...

1 residents of two highly affected regions of Pakistan 2 3 4 Muhammad Umair Khan, Akram Ahmad, Talieha Aqeel, Saad Salman, Qamer 5 Ibrahim, Jawaria Idrees , Muhammad Ubaid Khan 6 7 * Corresponding Author 8 9 a Department of Clinical Pharmacy, UCSI University, Kuala Lumpur, Malaysia 10 Department of Pharmacy Practice, Faculty of Pharmacy, University of Baluchistan, 11 Quetta, Pakistan 12 Departm...

Abstract Recently, many biometrics-based user authentication schemes using smart cards have been proposed to improve the security weaknesses in user authentication system. In 2006, Khan et al.[12] proposed an improved fingerprint-based remote user authentication scheme using smart cards that is achieved mutual authentication between the user and the server, while eliminating the drawback of Lee...

Novel “VIV” signal flow graphs are introduced. They provide a description of active filter subblocks consisting of OpAmps with grounded inputs. The Tow-Thomas, the Åckerberg-Mossberg, the Fleischer-Tow, and MFB structures are typical representatives of such a filter class. Many kinds of active filter like the Sallen-Key utilize a more general OpAmp connection with ungrounded inputs. These circu...

An experiment was designed and carried out to study the friction deformation of carbon fibre tow under sliding transverse orientation fibres. A continuous frictional force measured in reciprocal tests over a length about one width tow, as well incremental 4 mm with stop after each millimetre measure topography contact glass plate. Although coefficient depended on initial state first millimetres...

☆ Author contributions: Khan FA designed, implement and manuscript preparation of the case report. Poong interpretation of the data and manuscript writing. Burat and interpretation of the data. All authors read and appro ☆☆ Conflict-of-interest statement: Fawad A. Khan, Mug Buratto declare that they have no conflicts of interest. ⁎ Corresponding author at: The International Center fo Neuroscien...

Empirical studies of international trade have concentrated on singleequation models to analyse the demand relationship for imports and exports [Houthakker and Magee (1969). Naqvi et al (1983), Bnhmani-Oskooee (1984,1986)]. These studies have assumed that the imports and exports price elasticities facing any individual country are infinite or at least large. The assumption of infinite supply pri...

Nickel-coated carbon fibre (NiCCF) is an important composite material, which finds numerous engineering applications, primarily within: computer, telecommunication, automotive and military industries. In general, NiCCF can be produced by one of the three methods, namely: chemical vapour deposition (CVD), electroless, and electrochemical (galvanic) deposition of Ni on a carbon fibre tow material...

A finite element method is presented for predicting the mechanical performance of discontinuous fiber mesostructures typically produced by directed carbon fiber preforming. High-filament count bundles are modeled using beam elements to enable large representative volume elements to be studied. The beams are attached to a regular grid of 2D continuum elements, which represent the matrix material...