This study was undertaken to define the role of ultrasound (US) and magnetic resonance (MR) imaging in the diagnosis and preoperative staging of cervico-thoracic lymphangiomas in children. In a retrospective study, 11 patients with surgically and pathologically proved lymphangiomas had MR imaging and 6 of them underwent simultaneous US. US showed superficial hypoechogenic multioccular cystic masse

Differentiation from hematopoietic stem cells to mature blood cells of different lineages is a continuous process that requires the coordinated activity of several stage and lineage specific transcription factors. These factors act in a transcriptional hierarchy and also in a combinatorial manner to establish the expression of the genes that comprise a specific differentiation program. The progres

A sample of 229 nearby thick disk stars has been used to investigate theexistence of an age-metallicity relation (AMR) in the Galactic thickdisk. The results indicate that that there is indeed an age-metallicityrelation present in the thick disk. By dividing the stellar sample intosub-groups, separated by 0.1 dex in metallicity, we show that the medianage decreases by about 5-7 Gyr when going from

The lower electronic states of the molecule PbO have been studied using a newly developed basis set of the atomic natural orbital (ANO) type. The method includes scalar relativistic effects through the use of a Douglas-Kroll Hamiltonian. Multiconfigurational wave functions have been used with dynamic correlation included using second-order perturbation theory (CASSCF/CASPT2). Spin-orbit coupling i

This paper presents an analysis of phase noise in multiphase LC oscillators, and measurement results for several CMOS quadrature-voltage-controlled-oscillators (QVCOs) working in the 2-GHz frequency range. The phase noise data for a so-called BS-QVCO (-140 dBc/Hz or less at 3 MHz frequency offset from the carrier, for a power consumption of 20.8 mW and a figure-of-merit of 184 dBc/Hz) show that ph

In 2000 the European Council agreed on the so called ‘Lisbon Strategy’, the purpose of which is to make the European Union the strongest and most competitive economy in the world and also to fight unemployment and secure social welfare systems. One year later, in 2001, an ‘environmental dimension’ was supplemented to the Lisbon Strategy at the Council meeting in Gothenburg. An ‘EU Strategy for Sus

This thesis consists of a collection of essays on endogenous trade policies and may briefly be summarized as follows. The first essay empirically examines determinants of bilateral trade protection originating from normative trade theory, endogenous trade-policy studies, and political arguments put forward in the public debate. Overall protection level measures are constructed and the data sample

High-spin states of the isotopes In-103,In-105,In-107,In-109 have been investigated using in-beam gamma-ray spectroscopic methods. Results from three different experiments are presented. Targets of Fe-54, Cr-50, and Mo-92 were bombarded by a 270 and 261 MeV Ni-58 beam and by a 95 MeV F-19 beam, respectively. Reaction channel separation was achieved with a charged-particle detector array and in the

Two important dimensions of the Swedish social insurance system are those of universality (encompassing the entire population) and of compensation for loss of income. The decisions basic to the Swedish social insurance system and thus to the Swedish Welfare State were made during the 1910s. A universal pension insurance system was decided upon in 1913. This was the world's first universal public i

The helicity dependence of the total cross section for the (γ) over right arrow(p) over right arrownpi(+) pi(0) reaction has been measured for the first time at incident photon energies from 400 to 800 MeV The measurement was performed with the large acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. This channel is found to be excited predominantly whe

Abstract is not available

Lymphatics from the human superficial groin removed at operation in 21 patients (one with lymphedema) were examined in vitro. Histochemically no nerves were identified with either specific catecholamine fluorescence or immunoreactivity to tyrosine hydroxylase or dopamine beta-hydroxylase. Ring preparations of the lymphatics were mounted in tissue baths and isometric induced contractions were recor