6,961 research outputs found
Thomas J. Davis Letter : January 22, 1865
No full textDavis writes Lucinda informing her that he is still on board the steamboat Nightingale between Madison, Indiana and Cincinnati. He notes that if they continue all night they will reach Cincinnati by daylight even though the river is thick with ice. Davis writes that the 23rd A.C. is one day ahead of them, and that they are all going to assist the Eastern Army. Davis continues his letter the following morning on January 23 in Cincinnati, Ohio. He writes that he suspects they will next take the railroad to New York and notes that traveling this time of year is not enjoyable
Correspondence, Joseph E. and Catherine Dawe Davis
No full textLetter from Joe to his wife Catherine discussing his being gone for 4 months and getting a letter from A.C. with an invitation to play golf
Correspondence, Joseph E. and Catherine Dawe Davis
No full textLetter from Catherine to her husband Joe discussing news from home, including Lorraine giving birth to a baby girl named Julie Kate. Catherine also reminds Joe to write letters to Cope and A.C., and not to send to much money home
The value of a social model of day care for patients with advanced cancer and their carers.
No full textGeneral orders no. 17, by command of Brevet Major General Jefferson C. Davis to Soldiers of the Fourteenth Army Corps
No full textA typeset version of Davis's praise of the soldiers of the 14th Army Corps for their fighting during the Civil War. Presented by Brevet Colonel, Assistant Adjutant General, and Chief of Staff A.C. McClurg by command of Davis.1860s (1860-1869)Washington (D.C.)600ppiCivil War Military FrontDC046This Civil War Military Front collection was funded by LSTA
A direct A.C. to A.C. regenerative frequency and voltage converter
No full textIncludes bibliographical references.The reliable variable speed operation of an a. c. machine over a wide speed range is a problem that has received attention for some time. In this thesis a system to permit such operation from a fixed frequency fixed voltage supply is proposed, under the name of the asynchronous modulation converter. This converter is of the cycloconverter family, but is force-commutated and is not synchronised with the supply frequency. The power switching element comprises a power transistor in a diode bridge, coupled to the control circuitry by opto-isolators. The output of the a-mod converter is produced by a "chopper" modulation process and this results in the harmonics present being at frequencies well removed from the fundamental. A feedback system to ensure smooth commutation of the output current from the power switches is described. This feedback system operates by sensing the rate of rise of the inductive voltage surge on the load when a switch is opened to operate a freewheel path switch
Transient-evoked otoacoustic emissions in a representative population sample aged 18-25 years
No full textFlow at intermediate depths around Madagascar based on ALACE float trajectories
No full textDuring 1994–1996, 215 Autonomous Lagrangian Circulation Explorers (ALACE floats) were released at a nominal 900 m depth in the Indian Ocean as part of the World Ocean Circulation Experiment. Of these, 66 entered the region around Madagascar (2–30°S, 35–55°E), generally at a depth of 800–900 m. Floats approaching the island from the east were deflected either northward or southward depending on latitude, with the bifurcation point being near 20°S. Mean southward velocities in the western boundary current were 8.5 cm s-1 during each 25-day observation period, with mean northward velocities 7.7 cm s-1. Speeds past Cape Amber were about 11 cm s-1. These figures are comparable to those obtained from in situ current meter measurements. Floats rounding the island to the north frequently drifted north of the Comores for many months with no discernable pattern, before exiting the region either to the north in the East African Coastal Current and the equatorial current system or to the south via the Mozambique Channel. Flow rates in this region were highly skewed towards low (less than 5 cm s-1) velocities.Floats passing south of Madagascar showed little northward movement into the Mozambique Channel, but tended to move steadily westwards towards the African coast, becoming entrained in the Agulhas Current and its recirculation gyres near 28°S. Similarly, floats released within the southern portion of the Channel all tended to move to the south and west despite occasional entanglement with eddies. Mean flow in the Agulhas region was about 18 cm s-1, with maximum velocities over 25 days of up to about 35 cm s.All flows were extremely variable because of the ubiquity of eddies. In essence, the flow observed near 800 m resembled closely that seen at the surface from TOPEX/POSEIDON altimetry and at 845 m in the OCCAM global model. Temperature data collected by the floats were used to determine when a given float was being acted on by an anticyclonic eddy. Deviations, which were typically 0.5°C or more from the background temperature field, were found only in eddies south of 12°S and occurred in about 9% of float records within the Mozambique Channel. The results support the idea of a net southward flow of water through the Channel from the tropics to the Agulhas Current, with the eddies playing a major role in the transport in the southern part of the region. In the northern and eastern parts of the region, however, eddies were far less prevalent, and topographic steering by the Mascarene Ridge became important
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