Subepithelial lesions are frequently encountered and remain a diagnostic challenge. Imaging of subepithelial lesions using endoscopic ultrasound (EUS) can be helpful in narrowing the differential diagnosis of the lesion; however, definitive diagnosis typically requires tissue. Many methods for acquiring tissue exist including EUS-guided fine needle aspiration, Trucut biopsy, and fine needle bio...

This paper deals with the development of the WienerHopf method for solving the diffraction of waves at fine strip-slotted structures. The classical problem for diffraction of plane wave at a strip is an important canonical problem. The boundary value problem is consecutively solved by a reduction to a system of singular boundary integral equations, and then to a system of Fredholm integral equa...

The Himalayan Mountain Belt and adjacent Tibetan Plateau (Figure 1) remain the world’s foremost natural laboratory for investigation of continental collisional tectonics. The continuing debate over how the Asian continent has responded to the embedding of the Indian subcontinent has variously revolved around concepts such as distributed shortening (e.g. Dewey and Burke, 1973), wholesale contine...

An iterative algorithm for the detection of corner points on a digital curve is presented. T h e algorithm does not require any input parameters and yields intuitively appealing results for pictures varying in size and orientation. We first calculate the changes in curvature over a supporting arc whose lengtli is either a fraction of the perimeter or given by tlie subarc bordered by two previou...

background: clinically frank thyroid nodules are common and believed to be present in 4% to 10% of the adult population in the united states. in the current literature, fine needle aspiration biopsies are considered to be the milestone of a model which helps the physician decide whether a certain thyroid nodule needs a surgical approach or not. a considerable fact is that sensitivity and specif...

in this study, simple and efficient ultrasound-assisted emulsification microextraction (usaeme) combined with gas chromatography-flame ionization detector (gc-fid) was developed for the preconcentration and determination of carbamazepine in biological samples. in this method, the fine droplets of 1-octanol were formed and dispersed in the sample with the help of ultrasonic waves, which accelera...

Para el desarrollo de la presente investigación como primer paso, por medio cuestionarios y entrevistas aplicados a los trabajadores las cuadrillas que laboran, se identificaron riesgos mecánicos mayor importancia en: máquinas herramientas, superficies trabajo, espacios confinados medios izaje, lugares trabajo donde pueden producirse en forma diaria accidentes, enfermedades ocupacionales, daños...

The power of multiple testing procedures can be increased by using weighted p-values (Genovese, Roeder and Wasserman 2005). We derive the optimal weights and we show that the power is remarkably robust to misspecification of these weights. We consider two methods for choosing weights in practice. The first, external weighting, is based on prior information. The second, estimated weighting, uses...

Thursday, July 12, 1849, was a pleasant summer day in the hamlet of Bond Head, Ont., 40 miles north of Toronto. For most of the locals — largely Irish Protestants — it was a festive occasion featuring a parade in memory of William of Orange, a celebration traditionally lubricated with fiery homebrew. Mrs. Featherstone Osler’s lack of interest in these proceedings is easily understood: she was b...