A revision of the genus Buenoa (Notonectidae, Hemiptera)

Dissertation (Ph.D.)--University of Kansas, Entomology, 1952

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Photograph of Lola Hawthorne playing banjo; Illustration of roses, vines and leaves around photograph and titlehttps://scholarsjunction.msstate.edu/cht-sheet-music/7651/thumbnail.jp

RELEASE AND RE-GRASP WINDOWS FOR THE KOVACS ON HIGH BAR

The aim of the study was to determine the size of the release and re-grasp windows used in the Kovacs release and re-grasp on high bar and compare these to the potential time available to re-grasp the bar. One elite male gymnast performed 10 successful Kovacs (out of 10 attempts) which were recorded using an automatic motion capture system. The release and re-grasp windows were determined from the range of performances and the potential re-grasp window was calculated from the period of time the mass centre was within grasping distance of the bar. The gymnast was very consistent and used a small re-grasp window (23 - 27 ms). The potential re-grasp window was large with the gymnast being within re-grasp distance of the bar for 100 ms prior to grasping the bar. It is likely that the gymnast selected a consistent point within this window for the re-grasp

734-4 Can Intracoronary Ultrasound Improve PTCA Results?: Preliminary Core Lab Ultrasound Analysis from the CLOUT Pilot Study

The CLOUT Pilot Study hypothesis is that intracoronary ultrasound (ICUS) guidance can maximize the potential of balloon angioplasty through the safe application of carefully chosen oversized balloons. PTCA was performed until success was obtained using standard angiographic criteria. ICUS was then performed and, based on the degree of reference segment disease, balloons were upsized from 0.25 to 0.75mm (mean 0.4mm) regardless of the angiographic results. There have been no complications using this strategy in the initial 14 of a planned 100 patients. ICUS measures were performed using semiautomated programs at a core laboratory.ResultsIn the reference segment, ICUS revealed a mean lumen diameter of 2.60±0.35mm and plaque thickness of 0.78±0.11mm; on average 54.75±11.05% of the reference vessel was occupied by atheroma. At initial ICUS evaluation after angiographically successful PTCA, the lesion had a minimal lumen diameter (MLD) of 1.78±0.22mm and lumen area of 3.14±0.88mm2. Following balloon upsizing, the lesion MLD increased to 1.95±0.15mm (8.7% gain, p<0.02) and lumen area to 3.76±0.63mm2(16.7% gain, p<0.01). When compared to the reference segment lumen area, the lesional %lumen area reduction improved from 38.14±16.74% to 25.91±12.17% (p<0.01). Lumen improvement occurred primarily by expansion of the total vessel area (12.08±3.01mm2to 12.51±3.11 mm2, p=ns). As expected, there was a large degree of residual atheroma (68.62±7.47% cross sectional narrowing). After routine PTCA, only 5 of 12 patients reached a target MLD of 75% of the reference lumen diameter. Following balloon upsizing, 8 of 12 had reached this criteria.ConclusionsICUS guided balloon upsizing based on the degree of reference segment disease may be safely performed and results in significant improvement in luminal cross sectional area above that achieved by angiographic guidance alone. This may potentially lower restenosis rates if these initial gains are sustained long term

Spatial and Temporal Variation in Primary Productivity (NDVI) of Coastal Alaskan Tundra: Decreased Vegetation Growth Following Earlier Snowmelt

In the Arctic, earlier snowmelt and longer growing seasons due to warming have been hypothesized to increase vegetation productivity. Using the Normalized Difference Vegetation Index (NDVI) from both field and satellite measurements as an indicator of vegetation phenology and productivity, we monitored spatial and temporal patterns of vegetation growth for a coastal wet sedge tundra site near Barrow, Alaska over three growing seasons (2000-2002). Contrary to expectation, earlier snowmelt did not lead to increased productivity. Instead, productivity was associated primarily with precipitation and soil moisture, and secondarily with growing degree days, which, during this period, led to reduced growth in years with earlier snowmelt. Additional moisture effects on productivity and species distribution, operating over a longer time scale, were evident in spatial NDVI patterns associated with microtopography. Lower, wetter regions dominated by graminoids were more productive than higher, drier locations having a higher percentage of lichens and mosses, despite the earlier snowmelt at the more elevated sites. These results call into question the oft-stated hypothesis that earlier arctic growing seasons will lead to greater vegetation productivity. Rather, they agree with an emerging body of evidence from recent field studies indicating that early-season, local environmental conditions, notably moisture and temperature, are primary factors determining arctic vegetation productivity. For this coastal arctic site, early growing season conditions are strongly influenced by microtopography, hydrology, and regional sea ice dynamics, and may not be easily predicted from snowmelt date or seasonal average air temperatures alone. Our comparison of field to satellite NDVI also highlights the value of in-situ monitoring of actual vegetation responses using field optical sampling to obtain detailed information on surface conditions not possible from satellite observations alone

Wednesday Convocation

Program listing performers and works performe

Using seasonal climate forecasts for more effective grain-cotton production systems

The overall aim of this project is to significantly improve financial profitability, economic efficiency and resource risk management of dryland grain/cotton systems through effective use of seasonal climate forecasts and quantification of climatic variability