257 research outputs found
Irradiation of motors for in-vessel handling equipment
Bestrahlungstests von Antriebsmotoren für Handhabungssysteme in radioaktiv belasteter Umgebung
Das Vielgelenkarmsystem (ABS) gehört zu den möglichen Komponenten einer Grundausrüstung, um Anlagenteile instandhalten zu können, die innerhalb des Vakuumgefäßes der NET/ITER Fusionsmaschine angeordnet sind. Infolge der hohen -Strahlung und Nachwärme der aktivierten Komponenten sind das ABS und seine Bauteile Belastungen ausgesetzt, die ihre Lebensdauer einschränken und wegen ihrer notwendigen Instandhaltung die Verfügbarkeit der Anlage verringern. Es ist das Ziel von Bestrahlungstests, eine Grundlage zur Verbesserung von strahlungs- und temperaturempfindlichen Fernhantierungskomponenten zu schaffen und somit deren Lebensdauer zu erhöhen. Dies erfolgt durch die Modifikation von Standardkomponenten in Zusammenarbeit mit den Herstellern.
Neben Sensoren, Resolvern, elektronischen und optischen Komponenten, die nicht Gegenstand dieses Berichtes sind, zählen Motoren und deren Komponenten zu den empfindlichsten Bauteilen. Sie wurden daher in einem ausgedehnten Versuchsprogramm getestet. Die Ergebnisse der Experimente sind in diesem Bericht beschrieben
Endotracheal Intubation Success Rate in an Urban, Supervised, Resident-Staffed Emergency Mobile System: An 11-Year Retrospective Cohort Study.
In the prehospital setting, endotracheal intubation (ETI) is sometimes required to secure a patient's airways. Emergency ETI in the field can be particularly challenging, and success rates differ widely depending on the provider's training, background, and experience. Our aim was to evaluate the ETI success rate in a resident-staffed and specialist-physician-supervised emergency prehospital system.
This retrospective study was conducted on data extracted from the Geneva University Hospitals' institutional database. In this city, the prehospital emergency response system has three levels of expertise: the first is an advanced life-support ambulance staffed by two paramedics, the second is a mobile unit staffed by an advanced paramedic and a resident physician, and the third is a senior emergency physician acting as a supervisor, who can be dispatched either as backup for the resident physician or when a regular Mobile Emergency and Resuscitation unit (Service Mobile d'Urgence et de Réanimation, SMUR) is not available. For this study, records of all adult patients taken care of by a second- and/or third-level prehospital medical team between 2008 and 2018 were screened for intubation attempts. The primary outcome was the success rate of the ETI attempts. The secondary outcomes were the number of ETI attempts, the rate of ETI success at the first attempt, and the rate of ETIs performed by a supervisor.
A total of 3275 patients were included in the study, 55.1% of whom were in cardiac arrest. The overall ETI success rate was 96.8%, with 74.4% success at the first attempt. Supervisors oversaw 1167 ETI procedures onsite (35.6%) and performed the ETI themselves in only 488 cases (14.9%).
A resident-staffed and specialist-physician-supervised urban emergency prehospital system can reach ETI success rates similar to those reported for a specialist-staffed system
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A model-based assessment of the effects of projected climate change on the water resources of Jordan
This paper is concerned with the quantification of the likely effect of anthropogenic climate change on the water resources of Jordan by the end of the twenty-first century. Specifically, a suite of hydrological models are used in conjunction with modelled outcomes from a regional climate model, HadRM3, and a weather generator to determine how future flows in the upper River Jordan and in the Wadi Faynan may change. The results indicate that groundwater will play an important role in the water security of the country as irrigation demands increase. Given future projections of reduced winter rainfall and increased near-surface air temperatures, the already low groundwater recharge will decrease further. Interestingly, the modelled discharge at the Wadi Faynan indicates that extreme flood flows will increase in magnitude, despite a decrease in the mean annual rainfall. Simulations projected no increase in flood magnitude in the upper River Jordan. Discussion focuses on the utility of the modelling framework, the problems of making quantitative forecasts and the implications of reduced water availability in Jordan
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