A National Fuels Surveillance Network has been established to collect gasoline and other fuels through the 10 regional offices of the Environmental Protection Agency. Physical, chemical, and trace element analytical determinations are made on the collected fuel samples to detect components which may present an air pollution hazard or poison exhaust catalytic control devices. A summary of trace ...

This paper discusses alternative methods for enabling human explorers to achieve long range mobility on the surface of Mars. Vehicle types considered include ground rovers, winged and lighter-than air atmospheric vehicles, and suborbital ballistic vehicles making use of rocket propulsion. Energy sources considered for such vehicles include batteries, fuel cells, radioisotope generators, solar p...

Intelligent engine condition monitoring and early fault detection is becoming a necessity for modern gas turbines to achieve availability and reliability requirements. Degradation or failure of critical control components, such as the fuel metering valves, negatively affects both reliability and safety. Modelbased approaches for analytics and condition monitoring show great promise with advance...

Pumping element is an important component of a diesel fuel injection system. This project was carried out in Bosch. Ltd Adugodi, Bangalore. Using Pareto analysis, defects with highest percentage rejections are found. Barrel bore taper more and Honing Lines rejections were 2.5% and 1.8% respectively in the year 2013. Root cause analysis is done using Shainin Technique. Reason for the cause is an...

Although malonyl-CoA was first recognized as a central component in the regulation of hepatic ketogenesis, its inhibitory effect on mitochondrial carnitine palmitoyltransferase I (CPT I) has come to be viewed as a key element in fuel sensing in a variety of body tissues. This broadening role of the malonyl-CoA/CPT I partnership in the control of glucose and fatty acid metabolism, as well as cur...

The chemical element krypton, whose principal source is the atmosphere, had a long-lived radioactive content, in the mid-1940s, of less than 5 dpm per liter of krypton. In the late 1940s, this content had risen to values in the range of 100 dpm per liter. It is now some hundred times higher than the late 1940 values. This radioactivity is the result of the dissolving of nuclear fuel for militar...

The concept of lightweight design is widely employed for designing and constructing aerospace structures that can sustain extreme loads while also being fuel-efficient. Popular lightweight materials such as aluminum alloy and fiber-reinforced polymers (FRPs) possess outstanding mechanical properties, but their structural integrity requires constant assessment to ensure structural safety. Next-g...

In this study a three-phase homogeneous model was developed to simulate the performance of the molten carbonate fuel cell ~MCFC! cathode. The homogeneous model is based on volume averaging of different variables in the three phases over a small volume element. This approach can be used to model porous electrodes as it represents the real system much better than the conventional agglomerate mode...

A special sensitive element based on the novel composite material was created. The sensor has a linear calibration and is resistant to aliphatic hydrocarbons, in particular aviation fuel. A low cost and easy-to-implement method for calibrating the sensor was proposed. Temperature dependence of the oxygen mass transfer coefficient kL was measured for aviation fuel TS-1 (Russi...

A fuel cell is an electro-chemical tool capable of converting chemical energy into electricity. High operating temperature of solid oxide fuel cell, between 700oC to 1000oC, causes thermal stress. Thermal stress causes gas escape, structure variability and cease operation of the SOFC before its lifetime.The purpose of the current paper is to present a method that predicts ...