Internal solitons are potentially hazardous to sub-sea oil and gas drilling operations. The ability to predict these waves can therefore improve the cost effectiveness and safety of offshore ...drilling. Theory suggests that solitons are generated when strong tidal currents flow over a bathymetric feature, in a stratified water column. Therefore, with knowledge of the tidal currents, bathymetry and stratification these waves are potentially predictable. Observations were conducted between January and April 1998 at a proposed drilling location in water 440
m deep to the north–east of the Andaman Islands. These observations indicated the occurrence of internal solitons with thermocline depressions of up to 50
m and upper layer currents of up to 1.2
ms
−1. The solitons only occurred on spring tides, when the tidal range exceeded 1.5
m and their probability of occurrence increased with tidal range. Thus, in this location, predictions of tidal range can be used to forecast soliton occurrence.
A patient with long-standing metastatic disease from a well differentiated papillary cell carcinoma of the thyroid underwent embolisation of a painful large sacral metastasis. Following embolisation ...she had a massive rise in circulating serum thyroglobulin (Tg) levels coinciding with the development of adult respiratory distress syndrome (ARDS) on the tenth day without any other obvious cause. The patient subsequently recovered. The time course suggests that ARDS in this case might have resulted from aggregation of Tg molecules in the pulmonary microcirculation.
The technological prototype of the CALICE highly granular silicon-tungsten electromagnetic calorimeter (SiW-ECAL) was tested in a beam at DESY in 2017. The setup comprised seven layers of silicon ...sensors. Each layer comprised four sensors, with each sensor containing an array of 256 \(5.5\times5.5\) mm\(^2\) silicon PIN diodes. The four sensors covered a total area of \(18\times18\) cm\(^2\), and comprised a total of 1024 channels. The readout was split into a trigger line and a charge signal line. Key performance results for signal over noise for the two output lines are presented, together with a study of the uniformity of the detector response. Measurements of the response to electrons for the tungsten loaded version of the detector are also presented.
Peripheral vascular lesions may be inaccessible to treatment using catheter techniques. Ultrasound imaging in combination with Doppler may identify such lesions and provide possibilities for ...image-guided compression, injection of embolizing material by direct puncture, or both.
The use of an ERS-1 SAR fast delivery image in near real-time for guiding an oceanographic cruise in search of internal waves is discussed. Different image navigation methods are presented and ...compared. A simple method for predicting the position of internal waves up to four days after image acquisition is presented. The reliability of the prediction method is assessed by comparing the times at which internal waves were observed to arrive at several positions on the Portuguese shelf, with predictions derived from an automatically navigated image.
Observations of non-linear internal waves propagating onto the Portuguese shelf were made for 1 month during the summer upwelling season, using a thermistor chain mooring. The strongly non-linear ...waves had a typical amplitude of about 35
m and length of order 150
m, significantly longer than weakly non-linear KdV internal solitons. They appeared each semi-diurnal tidal cycle within the troughs of the internal tide and their phase speed (0.57
m
s
−1) was close to both that of the linear internal tide and that suggested by non-linear internal wave theory. The arrival time of the waves relative to local high water varied by over 5
h during the month and was closely correlated with wind events, with stronger upwelling favourable winds apparently causing the waves to arrive later. Analysis of the observations indicated that this modulation was primarily linked to wind driven currents, rather than fluctuations in the internal wave phase speed due to changes in the stratification. The intensification of the Ekman drift in an offshore upwelling filament may have played an important role in this variability. There appeared to be little correlation between the size of the waves and variations in tidal range. In fact the wave amplitude was close to the theoretical strongly non-linear maximum, even on neap tides. Considerable doubt remains about the origin of the waves; although the observations suggest that they were generated at the local shelf break by the semi-diurnal tide, their amplitude is too large to be explained in terms of the cross shelf tidal currents. It is possible that three-dimensional aspects of the topography and tidal regime are involved.
The First World War was a momentous event in Australian experience, and provoked a mass building of memorials throughout the country. These memorials required a new approach to landscape design, ...since there was no established tradition of monumental design upon which to draw. This paper gives a typology. The building and unveiling of the memorials was an occasion for expressing patriotism, mourning and a sense of sacrifice and victory, but also for the interpretation of postwar events in the light of wartime experience. The war had caused deep divisions in Australian society over conscription, which were partly reflected, partly disguised, in the rhetoric of the memorials which stand as prominent centres of landscape meaning in many suburbs and country towns.
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