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Selected AbstractsReliability of the V-scope system in the measurement of arm movement in children with obstetric brachial plexus palsyDEVELOPMENTAL MEDICINE & CHILD NEUROLOGY, Issue 11 2006Andrea E Bialocerkowski PhD BApp Sc (Physio) MApp Sc (Physio) This study reports on a novel methodology using the V-scope to quantify elbow and shoulder movement in young children with obstetric brachial plexus palsy (OBPP), and the intra-and interreliability of this method. The V-scope, a portable, inexpensive movement analysis system, was configured in an L-shape, with two transmitting towers placed on the floor and one 1.35m off the ground. These towers received ultrasonic pulses from buttons that were placed over standardized landmarks of the child's trunk, chest, and upper limb. Two physiotherapists (a paediatric and a generalist) facilitated the maximum range of active elbow flexion/extension and shoulder abduction/flexion in 30 children with OBPP (18 females, 12 males; age range 6mo-4y 7mo; mean age 2y 6mo [SD 1y 2mo]). Assessments were conducted on two occasions, one week apart. The V-scope was found to be feasible to use by a specialist and a generalist physiotherapist, demonstrating moderate to high reliability coefficients, small measurement errors, and lack of missing data. The pediatric physiotherapist was more reliable in measuring elbow and shoulder movement compared with the generalist physiotherapist, which suggests that the same experienced, pediatric physiotherapist should assess elbow and shoulder movement across all occasions of testing. [source] Comparison of velocity-log data collected using impeller and electromagnetic flowmetersGROUND WATER, Issue 3 2005M.W. Newhouse Previous studies have used flowmeters in environments that are within the expectations of their published ranges. Electromagnetic flowmeters have a published range from 0.1 to 79.0 m/min, and impeller flowmeters have a published range from 1.2 to 61.0 m/min. Velocity-log data collected in five long-screened production wells in the Pleasant Valley area of southern California showed that (1) electromagnetic flowmeter results were comparable within ±2% to results obtained using an impeller flowmeter for comparable depths; (2) the measured velocities from the electromagnetic flowmeter were up to 36% greater than the published maximum range; and (3) both data sets, collected without the use of centralizers or flow diverters, produced comparable and interpretable results. Although either method is acceptable for measuring wellbore velocities and the distribution of flow, the electromagnetic flowmeter enables collection of data over a now greater range of flows. In addition, changes in fluid temperature and fluid resistivity, collected as part of the electromagnetic flowmeter log, are useful in the identification of flow and hydrogeologic interpretation. [source] Glacier variations in Breheimen, southern Norway: dating Little Ice Age moraine sequences at seven low-altitude glaciersJOURNAL OF QUATERNARY SCIENCE, Issue 5 2003Stefan Winkler Abstract Moraine sequences in front of seven relatively low-altitude glaciers in the Breheimen region of central southern Norway are described and dated using a ,multi-proxy' approach to moraine stratigraphy. Lichenometric dating, based on the Rhizocarpon subgenus, is used to construct a composite moraine chronology, which indicates eight phases of synchronous moraine formation: AD 1793,1799, 1807,1813, 1845,1852, 1859,1862, 1879,1885, 1897,1898, 1906,1908 and 1931,1933. Although the existence of a few cases of older moraines, possibly dating from earlier in the eighteenth or late in the seventeenth centuries cannot be ruled out by lichenometry, Schmidt hammer R-values from boulders on outermost moraine ridges suggest an absence of Holocene moraines older than the Little Ice Age. Twenty-three radiocarbon dates from buried soils and peat associated with outermost moraines at three glaciers,Tverreggibreen, Storegrovbreen and Greinbreen,also indicate that the ,Little Ice Age' glacier maximum was the Neoglacial maximum at most if not all glaciers. Several maximum age estimates for the Little Ice Age glacier maximum range between the fifteenth and seventeenth centuries, with the youngest from a buried soil being AD 1693. A pre-Little Ice Age maximum cannot be ruled out at Greinbreen, however, where the age of buried peat suggests the outermost moraine dates from AD 981,1399 (at variance with the lichenometric evidence). Glaciofluvial stratigraphy at Tverreggibreen provides evidence for minor glacier advances about AD 655,963 and AD 1277,1396, respectively. Copyright © 2003 John Wiley & Sons, Ltd. [source] Slot tag antenna for high Q RFID chipMICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 11 2010T. Deleruyelle Abstract This article presents a radio frequency identification (RFID) tag slot antenna. This antenna is suitable for high Q RFID chip. The input impedance at 915 MHz should be 19 + j492 ,. Simulated maximum range is more than 8 m on Federal Communication Commission (FCC) RFID band and more than 3 m on the entire RFID band. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2493,2495, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25531 [source] On the accuracy of retrieved wind information from Doppler lidar observationsTHE QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Issue 587 2003F. Davies Abstract A single pulsed Doppler lidar was successfully deployed to measure air flow and turbulence over the Malvern hills, Worcester, UK. The DERA Malvern lidar used was a pulsed Doppler lidar. The lidar pulse repetition rate was 120 Hz and had a pulse duration of . The system was set up to have 41 range gates with range resolution of 112 m. This gave a theoretical maximum range of approximately 4.6 km. The lidar site was 2 km east of the Malvern hill ridge which runs in a north,south direction and is approximately 6 km long. The maximum height of the ridge is 430 m. Two elevation scans (Range,Height Indicators) were carried out parallel and perpendicular to the mean surface flow. Since the surface wind was primarily westerly the scans were carried out perpendicular and parallel to the ridge of the Malvern hills. The data were analysed and horizontal winds, vertical winds and turbulent fluxes were calculated for profiles throughout the boundary layer. As an aid to evaluating the errors associated with the derivation of velocity and turbulence profiles, data from a simple idealized profile was also analysed using the same method. The error analysis shows that wind velocity profiles can be derived to an accuracy of 0.24 m s,1 in the horizontal and 0.3 m s,1 in the vertical up to a height of 2500 m. The potential for lidars to make turbulence measurements, over a wide area, through the whole depth of the planetary boundary layer and over durations from seconds to hours is discussed. Copyright © 2003 Royal Meteorological Society [source] | ||||||||||