Fungi have a significant impact on the economics of paper making and the end use of paper and products employing paper related components. Paper on a practical basis is a derivative of wood, and fungi that possess cellulose-degrading enzymes can directly impact the value and utility of various types of products. Fungi further have a negative economic impact on the pulp produced during paper man...

In this study, the directed energy deposition (DED) process was applied to additively manufacture cobalt-chromium alloy materials, which are commonly used in molds, dental/orthopedic medical applications, vehicles, and aircraft. The quality of obtained by using DED technology is affected parameters. Therefore, aim experiment, evaluate microstructure changes caused varying parameters such as las...

this paper presented methods to determine the aerodynamic forces that acton an aircraft wing during flight. these methods are initially proposed for asimplified two degree-of-freedoms airfoil model and then are extensivelyapplied for a multi-degree-of-freedom airfoil system. different airspeedconditions are considered in establishing such methods. the accuracy of thepresented methods is verifie...

the owner of the aircraft or the enterprise which benefits from its use or operation may have civil liability for injuries to persons or property on the land or water or in the sky. regarding this liability many questions can be raised: who is the responsible person and what are the harmful acts and damages which can be resulted from using aircraft and how can harmonize the property rights of p...

Thanks to the digital revolution, digital signal processing and control has been widely used in many areas of science and engineering today. It provides practical and powerful tools to model, simulate, analyze, design, measure, and control complex and dynamic systems such as robots and aircrafts. Gene networks are also complex dynamic systems which can be studied via digital signal processing a...

This work illustrates how to calculate accurate aircraft maintenance costs using Activity Based Costing (ABC). Comparing to traditional cost calculation, the proposed method is useful for aircrafts maintenance activity integrated to Airline Company and who wants to diversify its revenue by selling some available maintenance slots to third party clients for a competitive price. This paper takes ...

The Royal Society report 'Geoengineering the Climate' identified solar radiation management using albedo-enhancing aerosols injected into the stratosphere as the most affordable and effective option for geoengineering, but did not consider in any detail the options for delivery. This paper provides outline engineering analyses of the options, both for batch-delivery processes, following up on p...

BACKGROUND The Human Factors Analysis and Classification System (HFACS) is a general human error framework originally developed and tested within the U.S. military as a tool for investigating and analyzing the human causes of aviation accidents. Based on Reason's (1990) model of latent and active failures, HFACS addresses human error at all levels of the system, including the condition of aircr...