A mobile, low-field nuclear magnetic resonance (NMR) sensor for onboard, inline detection of catalytic fines in fuel oil in the shipping industry is presented as an alternative to onshore laboratory measurements. Catalytic fines (called cat fines) are aluminosilicate zeolite catalysts utilized in the oil cracking process at refineries. When present in fuel oil, cat fines cause abrasive wear of ...

The author contends that sex differentials in childhood mortality in Pakistan are a likely outcome of son preference behavior by parents. Consideration is given to the historical improvement in the female disadvantage in mortality, the neglect of female children, gender and class factors, and son preference and high fertility. Data are from the 1981 Pakistan census and other official surveys....

www.frontiersinecology.org © The Ecological Society of America S European landscapes are fire-prone due to the Mediterranean climate, the presence of flammable vegetation, and the rugged terrain (Pausas et al. 2008). The environmental and societal impacts of fire in the region have increased markedly during the 20th century. Pre-industrial fire regimes were generally associated with widespread ...

Fire emissions, smoke dispersion, and air quality are very important for fire fighting and planing of prescribed burning. BlueskyRAINS (BSR) is a comprehensive and state-of-the-art Decision Support System (DSS) for fire managers and air quality managers to plan fuels treatments and support state air quality smoke regulatory actions, especially related to prescribed fires. BSR has been created b...

Large scale power production benefits from the high efficiency of gas-steam combined cycles. In the lower power range, fuel cells are a good candidate to combine with gas turbines. Such systems can achieve efficiencies exceeding 60%. High temperature Solid Oxide Fuel Cells (SOFC) offer good opportunities for this coupling. In this paper, a systematic method to select a design according to user ...

On the basis of 2D hydro-base simulations, where a super-high velocity spherical DT impactor collides against a spherically-compressed stationary DT main fuel, the ignition and burn dynamics in the impact fast ignition (IFI) scheme has been investigated. It is found that the energy conversion from the impactor kinetic energy to its internal energy at the collision is not so high (20 ~ 40 %) sin...

Spherical catalytic micromotors fabricated as described in Wheat et al. [Langmuir 26, 13052 (2010)] show fuel concentration dependent translational and rotational velocity. The motors possess short-time and long-time diffusivities that scale with the translational and rotational velocity with respect to fuel concentration. The short-time diffusivities are two to three orders of magnitude larger...

Abstract—Gas flaring is one of the most GHG emitting sources in the oil and gas industries. It is also a major way for wasting such an energy that could be better utilized and even generates revenue. Minimize flaring is an effective approach for reducing GHG emissions and also conserving energy in flaring systems. Integrating waste and flared gases into the fuel gas networks (FGN) of refineries...

A Computational Fluid Dynamics (CFD) modeling study has been conducted to evaluate the application of overfire air (OFA), Fuel Lean Gas Reburn (FLGR), and Selective Non-Catalytic Reduction (SNCR) to reduce NOx emissions from Owensboro Municipal Utilities’ Elmer Smith Station. Smith Station Unit 1 is a nominally rated 150 MWe single-wall cyclone fired boiler with three barrels. FLGR is a NOx con...