The annular pancreas in adults is a rare congenital anomaly that is detected after development of complications, such as gastric outlet obstruction, recurrent pancreatitis, and peptic ulcer. Duodenal bypass is the procedure of choice for treating duodenal obstruction caused by the annular pancreas in both children and adults. Duodenoduodenostomy is routinely performed in neonates and children. ...

An integrated compact circular-polarized annular ring slot antenna is proposed in this paper. It consists of an annular ring slot radiator and a hybrid patch coupler. The hybrid patch coupler is integrated with the annular ring slot antenna to radiate the circularpolarized wave, while size of the antenna remains the same. Both the impedance bandwidth and axial ratio bandwidth of the proposed de...

O’Brien’s granuloma is a rare skin disease that presents clinically by grouped red papules that may coalesce into annular plaques on sun damaged skin. The annular plaques have raised erythematous borders (3-5 mm)and slightly atrophic center [1].The hypo pigmented central regions are distributed mainly in sun-exposed areas. The sites of predilection include the neck, face, chest and arms. Early ...

OBJECTIVES Precise measurements of aortic annulus dimensions are crucial for prosthesis size selection in patients undergoing transcatheter aortic valve implantation (TAVI). The so-called effective diameter (derived from area) measured in multislice computed tomography (MSCT) images has evolved to be the most precise measurement tool. Usually, the operator must manually adjust the aortic annula...

Multi-color and broadband visible emission was realized thorough the hexagonal annular structure of GaN. The annular structure fabricated by selective-area growth emitted purple, blue and green color-emission from the multi-facets. The hexagonal annular structure provided various sidewalls of {101} and {112} semi-polar facets, and (0001) polar facet. From the cathodoluminescence study, the (000...

PURPOSE To investigate six cases of annular cyclitis. METHODS All patients with impairment of visual acuity underwent complete ophthalmologic examination, color fundus photography, laboratory tests and fluorescein angiography. Indocyanine green (ICG) angiography and B-scan ultrasonography were also performed in three cases in order to diagnose the disease. RESULTS All patients presented a u...

Acute annular urticaria is a common and benign cutaneous hypersensitivity reaction seen in children that manifests with characteristic annular, arcuate, and polycyclic urticarial lesions in association with acral edema. It is mistaken most often for erythema multiforme and, occasionally, for a serum-sickness-like reaction. Although these 3 entities may present in a similar manner, specific clin...

The "North Atlantic Oscillation (NAO)" as defined in Walker and Bliss (1932) has been traditionally viewed as a teleconnection pattern with 'centers of action' in the Atlantic sector. In contrast, the "zonal index cycle", as articulated by Namias (1950), involves the interactions between a fundamentally zonally symmetric or 'annular’ mode and the eddies. The perceived dynamical significance of ...

Annular quasimonoenergetic electron beams with a mean energy in the range 200-400 MeV and charge on the order of several picocoulombs were generated in a laser wakefield accelerator and subsequently accelerated using a plasma afterburner in a two-stage gas cell. Generation of these beams is associated with injection occurring on the density down ramp between the stages. This well-localized inje...

Introduction Annular pancreas is a rare congenital abnormality characterized by a ring of pancreatic tissue surrounding the descending portion of the duodenum. Annular pancreas coexisting with replaced common hepatic artery which is also a rare anatomical variation has not been reported previously. Case Presentation A 53-year-old man visited our hospital complaining of epigastric pain. Based ...