Monitoring structures under retrofitting and strengthening is an ideal way to verify and control their behaviour and also to confirm and calibrate the calculation models. The Traneberg Bridge is a combined road and suburban railway bridge. The retrofitting and strengthening of the bridge started in 1999 in order to accommodate the increasing traffic and the need for heavy vehicles. It is a concrete bridge where only the deck support girders are made of steel. The main span is 191 meters and at the time of its completion in 1934 was the longest concrete arch bridge in the world. The vertical clearance is 26 meters. The old concrete arches seemed to be in good condition and the concrete samples taken confirmed high values of Young's modulus. It was decided that the old arch would be kept but the pillars and the deck were to be reconstructed. Monitoring the old arch during the retrofitting was significant in order to control the behaviour of the arch during demolition and reconstruction. The monitoring system consisted of seven fibre optic SOFO sensors and five thermocouples. The monitoring started in November 2003 and was completed in February 2005. The bridge was checked on a weekly and monthly basis and the modelling of the construction steps was compared to real values from measurements. This paper presents the results during reconstruction and highlights the benefits of the monitoring project when reconstructing the old structure.
Glottal flow waveforms estimated by inverse filtering acoustic speech pressure signals were compared to glottal area functions obtained by digital high-speed imaging of the vocal fold vibration. Sp ...
Remifentanil ar en ultrakortverkande opioid. Pa grund av dess mycket potenta effekt maste den ges kontrollerat, antingen via malstyrd tillforsel [TCI] eller manuell kontroll [MK] av hastigheten pa pumpen. Syftet med studien var att undersoka om det fanns nagon skillnad i dos eller biverkningsfrekvens mellan TCI och MK.
Metod: Data samlades in fran 49 operationer. Resultat: Ingen signifikant skillnad avseende mangd lakemedel eller de postoperativa biverkningarna kunde pavisas mellan TCI och MK.
Slutsats: Anvandningen av TCI ar utifran uppmatta parametrar inte ett verktyg for att ge patienten mindre mangd lakemedel eller farre postoperativa biverkningar.
Abstract Objectives To evaluate a new analysis system, High‐Speed Tool Box (H. Larsson, custom‐made program for image analysis, version 1.1, Department of Logopedics and Phoniatrics, Huddinge University Hospital, Huddinge, Sweden, 1998) for studying vocal fold vibrations using a high‐speed camera and to relate findings from these analyses to sound characteristics. Study Design A Weinberger Speedcam + 500 system (Weinberger AG, Dietikon, Switzerland) was used with a frame rate of 1904 frames per second. Images were stored and analyzed digitally. Analysis included automatic glottal edge detection and calculation of glottal area variations, as well as kymography. These signals were compared with acoustic waveforms using the Soundswell program (Hitech Development AB, Stockholm, Sweden). Methods The High‐Speed Tool Box was applied on two types of high‐speed recordings: a diplophonic phonation and a tremor voice. Relations between glottal vibratory patterns and the sound waveform were analyzed. Results In the diplophonic phonation, the glottal area waveform, as well as the kymogram, showed a specific pattern of repetitive glottal closures, which was also seen in the acoustic waveform. In the tremor voice, fundamental frequency (F0) fluctuations in the acoustic waveform were reflected in slow variations in amplitude in the glottal area waveform. For studying details of mucosal movements during these kinds of abnormal vibrations, the glottal area waveform was particularly useful. Conclusions Our results suggest that this combined high‐speed acoustic‐kymographic analysis package is a promising aid for separating and specifying different voice qualities such as diplophonia and voice tremor. Apart from clinical use, this finding should be of help for specification of the terminology of different voice qualities.
Abstract As a substudy to a broader investigation concerning clinical parameters in patients with impaired glucose tolerance blood and plasma viscosity were studied in 55 patients in ages from 39 to 81 years (mean age 62,4 years). These patients were selected from a large health study in southern Sweden where they presented with impaired glucose tolerance but without signs of vascular disease. At the time of our study these 55 patients were still not, 20 years after their first oral glucose tolerance test, classified as ouvert diabetes. Our intention was to study effects of minor disturbances of glucose tolerance on blood rheology. The patients had a laboratory profile close to that of patients with ouvert type 2 diabetes. Compared to a ontrol group of healthy individuals they had higher values for blood and plasma viscosity at all shear rates (p<0.001), higher values for b-glucose, ESR, triglycerides, s-GT (p<0.05-0.005) and lower values for s-creatinine p<0.001). It was also found that diastolic pressure, both at rest and after exercise, was positively correlated to plasma viscosity. This holds true also for systolic arm pressure. Pulse rate at rest and after exercise showed a negative correlation to blood rheology parameters. The pool of data is very large and further analyses are under way. So far our data show that even minor abnormalities of glucose metabolism are harmful and create a risk for vascular disease.
