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Studies on Microorganisms in Jet Aircraft Fuel Systems
Laboratory and field investigations during the past ten years have demonstrated that certain microorganisms can cause deleterious effects in jet fuel tank systems. These investigations have brought about new concepts concerning the mechanisms of utilization of certain constituents in jet fuel tanks by microorganisms. Since the presence of microorganisms is inevitable in fuel systems, research efforts have been directed towards identification and determination of the types of microorganisms which can utilize jet fuel hydrocarbons, fuel additives, polyurethane foam structural materials, and particular hydrocarbons present in the fuel.
"On the Precipice in the Dark": Maryland in the Secession Crisis, 1860-1861
This dissertation is a study of the State of Maryland in the secession crisis of 1860-1861. Previous historians have emphasized economic, political, societal, and geographical considerations as the reasons Maryland remained loyal to the Union. However, not adequately considered is the manner in which Maryland understood and reacted to the secession of the Lower South. Historians have tended to portray Maryland's inaction as inevitable and reasonable. This study offers another reason for Maryland's inaction by placing the state in time and space, following where the sources lead, and allowing for contingency. No one in Maryland could have known that their state would not secede in 1860-61. Seeing the crisis through their eyes is instructive. It becomes clear that Maryland was a state on the brink of secession, but its resentment, suspicion, and anger toward the Lower South isolated it from the larger secession movement. Marylanders regarded the Lower South's rush to separate as precipitous, dangerous, and coercive to the Old Line State. A focus on a single state like Maryland allows a deeper, richer understanding of the dynamics, forces, and characteristics of the secession movement and the federal government's response to it. It cuts through the larger debates about the causes of secession and instead focuses on the manner in which secession was carried out, the intended effect of it, the actual effect it generated in the vitally important state of Maryland, and what it all says about the nature of internal divisions in the South at large.
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