153 research outputs found
A Comparative Study of Selected Marches of Kenneth Alford and John Phillip Sousa
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Don't cancel the surgery just yet! A case report of positive preoperative pregnancy test due to a soft tissue sarcoma production of ectopic beta human chorionic gonadotropin.
Soft tissue sarcomas are a rare group of mesenchymal malignancies which can range from low to high grade. These tumors have different clinical, radiographic, and histopathological characteristics. Beta human chorionic gonadotropin is a naturally secreted hormone by placental syncytiotrophoblast cells during pregnancy. On very rare occasions, sarcomas can develop the ability to ectopically produce human chorionic gonadotropin. Very few cases exist in the literature of soft tissue sarcomas expressing this hormone. We report the case of a 55-year-old female who presented with a posterior thigh soft tissue sarcoma who on the day of surgical resection was found to have an unusually elevated serum human chorionic gonadotropin. Positive immunohistochemical staining of the resected mass confirmed the sarcoma as the source of the beta human chorionic gonadotropin
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Closing talk at Snowmass 2001: a summer study on the future of particle
physics.Comment: 4 pages, uses ReVTeX4; typo correcte
A COAXIALLY COUPLED DEFLECTING-ACCELERATING MODE CAVITY SYSTEM FOR PHASE-SPACE EXCHANGE (PSEX)
Abstract The phase space manipulation of bunched beams offers a wide range of flexibility in beam dynamics control for advanced accelerator application. In particular, the capability of exchanging the transverse and longitudinal phase spaces enables to switch the transverse and horizontal emittance or shaping the charge distribution of an electron bunch to improve acceleration gradient and transformer ratio in beam-driven accelerators. A deflecting mode cavity has been used as the most integral element in the beam control scheme as imposing a kick on particles transferred between the two phase planes. In practice, the presence of the RF element with a finite length, however, induces thick lens effect limiting the phase-space exchange (PSEX) performance based off a thin lens model. Extending the idea from [A. Zholents PAC 11], we proposed momentum compensation technique using a single accelerating mode cavity coaxially coupled with the deflecting mode one. This paper describes the composite 3.9 GHz system and presents design analysis, including tracking and particlein-cell (PIC) simulations, and layout of feasible experiment at the Advanced Superconducting Test Area (ASTA) of Fermilab
The SECURE project – Stem canker of oilseed rape: : molecular methods and mathematical modelling to deploy durable resistance
N Evans et al, "The SECURE Project - Stem Canker of oilseed rape: Molecular methods and mathematical modeling to deploy durable resistance", in Vol 4 of the Proceedings of the 12th International Rapeseed Congress : Sustainable Development in Cruciferous Oilseed Crops Production, Wuhan, China, March 26 - 30, 2007. The proceedings are available online at: http://gcirc.org/intranet/irc-proceedings/12th-irc-wuhan-china-2007-vol-4.htmlModelling done during the SECURE project has demonstrated the dynamic nature of the interaction between phoma stem canker (Leptosphaeria maculans), the oilseed rape host (Brassica napus) and the environment. Experiments done with near-isogenic lines of L. maculans to investigate pathogen fitness support field data that suggest a positive effect of the avirulence allele AvrLm4 on pathogen fitness, and that the loss of this allele renders isolates less competitive under field conditions on cultivars without the resistance gene Rlm4. The highlight of molecular work was the cloning of AvrLm1 and AvrLm6. L. maculans is now one of the few fungal species for which two avirulence loci have been cloned. Subsequent research focused on understanding the function of AvrLm1 and AvrLm6 and on the analysis of sequences of virulent isolates to understand molecular evolution towards virulence. Isolates of L. maculans transformed with GFP and/or DsRed were used to follow growth of the fungus in B. napus near-isogenic-lines (NIL) with or without MX (Rlm6) resistance under different temperature and wetness conditions. The results greatly enhanced our knowledge of the infection process and the rate and extent of in planta growth on different cultivars. Conclusions from work to model durability of resistance have been tested under field conditions through a series of experiments to compare durability of resistance conferred by the major resistance gene Rlm6 alone in a susceptible background (EurolMX) or in a resistant background (DarmorMX) under recurrent selection over 4 growing seasons. A major priority of the project was knowledge transfer of results and recommendations to target audiences such as plant breeding companies and extension services. CETIOM developed a “diversification scheme” that encourages French growers to make an informed choice about the cultivars that are grown within the rotation based on the resistance genes carried by the individual cultivars. Use of such schemes, in association with survey data on the population structure of L. maculans at both national and European scales will provide opportunities for breeders and the industry to manage available B. napus resistance more effectively.Non peer reviewe
Fall 1997 Commencement - The University of Texas of the Permian Basin
Fall 1997 Commencement - December 13, 1997https://falconcommons.utpb.edu/utpb-commencement-programs/1031/thumbnail.jp
Foreclosure of Securitized Commercial Mortgages - A Model of the Special Servicer
The decision to foreclose on a CMBS mortgage is made by the special servicer. A mortgage loan is in special servicing when it is either delinquent or in a state of imminent default. A special servicer should represent the interests of the underlying CMBS bondholders by returning the highest possible value to the investors. In this paper, we show that a special servicer\u27s compensation structure results in an incentive for her to extend a loan beyond the time desired by its bondholders. We develop a model and demonstrate how compensation incentives interact and influence a special servicer\u27s foreclosure decisions. Our model takes into consideration the dynamic nature of such a decision by viewing is as a dynamic programming problem whereby foreclosure represents a discrete terminal state of an optimal stopping problem. This model thus captures the trade-off between continuation of a loan and termination and we use this model to determine how the stopping rule changes under various compensation structures
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