Recent technological advances have made it possible to produce particles with nanometer dimensions that are uniformly and steadily suspended in traditional solar liquids enhanced the impact of thermo-physical parameters. In this research, a three-dimensional flat plate collector was built using thin single working fluid pipe. The physical model solved computationally under conditions conjugated...

Introduction The GRASE (GRadient And Spin Echo) pulse sequence was proposed about two decades ago for T2-weighted imaging. GRASE suffers however from image ghosting due to the T2-modulation of the data. A vertical GRASE pulse sequence (vGRASE) was for that reason later introduced by Oshio, in which the EPI trains, following each RF echo, were modified to cover each a vertical instead of a horiz...

Magnetic resonance (MR) imaging of the scrotum represents an important supplemental diagnostic tool in the evaluation of scrotal diseases. Diffusion-weighted (DW) MR imaging is a developing technique, proved to improve tissue characterization. We evaluated the feasibility and diagnostic performance of DW MR imaging in the detection and characterization of scrotal lesions. We retrospectively eva...

Linking CRISs (Current Research Information Systems) and OA (Open Access) Systems brings together systems for managing R&D with systems for providing open access to scholarly publishing – the major visible output of R&D – on the emerging European GRIDs infrastructure. The debate over OA is very active with ‘green’ (institutional repository selfarchiving) and ‘gold’ (author / institution pays pu...

Introduction. Conventional gradient calibration procedures do not exclude significant bias in the diffusion-weighted (DW) signal during MR experiments. The error, arising from imperfections in the DW gradients, varies among the different gradient directions and exhibits different extent of offsets. We propose a calibration method for DW imaging using a homogeneous water phantom, presuming that ...

The purpose of the study was to determine the concentration of bisphenol A (BPA), 4-tert-octylphenol (OP), and 4-nonylphenol (NP), in human hair, the fur of Baltic grey seals and the feathers of herring gulls. Hair was collected from 42 volunteers, while grey seal fur (n = 17) came from the seal centre in Hel (Marine Station of Institute of Oceanography, University of Gdansk) and gull covert fe...

BACKGROUND To evaluate diffusion-weighted MR neurography (DW-MRN) for visualizing the brachial plexus and for the assessment of brachial plexopathy. METHODS 40 oncological patients with symptoms of brachial plexopathy underwent 1.5 T MRI using conventional MR sequences and unidirectional DW-MRN. The images were independently reviewed by two radiologists. Anatomic visualization of the brachial...

Several approaches have been proposed to model different aspects of a Data Warehouse (DW) during recent years, such as the modeling of a DW at the conceptual and logical level, the design of the ETL (Extraction, Transformation, Loading) processes, the derivation of the DW models from the enterprise data models, and customization of a DW schema. At the end of the design, a DW has to be deployed ...