Neutralizer optimization

The preliminary results of a test program to optimize a neutralizer design for 30 cm xenon ion thrusters are discussed. The impact of neutralizer geometry, neutralizer axial location, and local magnetic fields on neutralizer performance is discussed. The effect of neutralizer performance on overall thruster performance is quantified, for thruster operation in the 0.5-3.2 kW power range. Additionally, these data are compared to data published for other north-south stationkeeping (NSSK) and primary propulsion xenon ion thruster neutralizers

Method Of Forming Supported Doped Palladium Containing Oxidation Catalysts

A method of forming a supported oxidation catalyst includes providing a support comprising a metal oxide or a metal salt, and depositing first palladium compound particles and sec­ ond precious metal group (PMG) metal particles on the sup­ port while in a liquid phase including at least one solvent to form mixed metal comprising particles on the support. The PMG metal is not palladium. The mixed metal particles on the support are separated from the liquid phase to provide the supported oxidation catalyst

Towards a Design for IT Performance Management

This paper provides a report on the first iteration of a design-driven research project for delivering an IT performancemanagement (ITPM) solution. This research is situated in the context of existing IT performance related studies. Designscience research (DSR) is the underpinning research approach for crafting the ensuing ITPM solution. Three challenges in theITPM area are identified and a design to meet the challenges is proposed. This is followed with a recapitulation of what theresearch covered in order to develop and evaluate the design. The evaluation results show that the totality of the design isacceptable. Contrary to the mainstream IS literature, this research takes a design approach to create a solution which goesbeyond only the technical and which is based on commonly neglected stakeholder-oriented theories in ITPM. Implications oftaking the design approach are discussed

Doped palladium containing oxidation catalysts

Palladium-containing catalysts that exhibit fast kinetics in oxidation of reducing gases such as hydrogen, carbon monoxide, and hydrocarbons have been prepared. Palladium, as oxide and/or hydroxide, is deposited on various metal oxides and metal sulfates. The kinetics of palladium oxide reduction has been increased by the addition of precious metal group such as platinum, silver, and ruthenium salts and complexes. This invention can be used in development of chemochromic passive sensors for hydrogen, carbon monoxide, and hydrocarbon gas detection. These gases/liquids are widely used and produced in many industries and a safe operation is a number one priority for all of them. These pigments will provide a layer of protection against accidental releases of these gases and therefore reinforces a safe manufacturing/utilization environment. When used as chemochromic hydrogen leak detection sensor, this novel doping technique has increased the pigments sensitivity toward hydrogen gas by 3 folds while encapsulated within a silicon resin

Nutrition and Aging

This Special Issue focuses on the importance of nutritional interventions for the delay of age-related conditions [...]