This paper presents a method for the determination of alkylphenols, alkylphenol polyethoxylates (APEO) and alkylphenol ethoxycarboxylates (APEC) in the aqueous and particulate phase of wastewater samples. Quantification was achieved by liquid chromatography-tandem mass spectrometry. The sensitivity of the method is demonstrated by low detection limits, in the dissolved phase 1.2-9.6ngl(-1) for ...

Local modes, phonons, and mass transport in solid 4 He. Abstract We propose a model to treat the local motion of atoms in solid 4 He as a local mode. In this model, the solid is assumed to be described by the Self Consistent Harmonic approximation, combined with an array of local modes. We show that in the bcc phase the atomic local motion is highly directional and correlated, while in the hcp ...

AIM This study evaluated the results and efficacy of serum CA 19-9 in determining the nature of a pancreatic solid mass in patients referred for investigation of possible malignancy. BACKGROUND A wide variety of tumor markers have been proposed for pancreatic cancer but currently the only one with any practical usefulness for diagnosis, prognosis, and monitoring of treatment is "CA 19-9". P...

Introduction Since Vilmann et al. published the initial report of EUS‐FNA of the pancreas in 1992, this technique has become widely used to reliably obtain specimens from lesions around the gastrointestinal tract. The major target lesions of EUS‐FNA are pancreatic masses, upper abdominal lymph nodes, and upper gastrointestinal submucosal tumors. Recently, however, the target lesions of EUS‐FNA ...

Cardiomyopathy in children with mitochondrial disease. Clinical course and cardiological findings. Eur Heart J 2003;24:280–288. 23. Guenthard J, Wyler F, Fowler B, Baumgartner R. Cardiomyopathy in respiratory chain disorders. Arch Dis Child 1995;72:223–226. 24. Auré K, Ogier de Baulny H, Laforêt P, Jardel C, Eymard B, Lombès A. Chronic progressive ophthalmoplegia with large-scale mtDNA rearrang...

Context. Solid interstellar CO2 is an abundant component of ice dust mantles. Its ubiquity towards quiescent molecular clouds, as well as protostellar envelopes, has recently been confirmed by the IRS (InfraRed Spectrograph) aboard the Spitzer Space Telescope. Although it has been shown that CO2 cannot be efficiently formed in the gas phase, the CO2 surface formation pathway is still unclear. T...

An exhaustive classification of matrix effects occurring when a sample preparation is performed prior to liquid-chromatography coupled to mass spectrometry (LC-MS) analyses was proposed. A total of eight different situations were identified allowing the recognition of the matrix effect typology via the calculation of four recovery values. A set of 198 compounds was used to evaluate matrix effec...

Endometriosis should be entertained as part of differential diagnosis in females in child-bearing age group when there is an incidental finding of solid neoplasm on imaging. It helps to guide physicians for appropriate management. It is important to emphasize that no radiological or imaging finding is pathognomonic for endometriosis.

We report a case of predominantly cystic synovial sarcoma partly adherent to the hyoid bone in the submental area. The mass demonstrated posterior acoustic enhancement at sonography and a complex cystic mass with mural nodules and solid septa at CT.