Tracer tests for the investigation of heterogeneous porous media and stochastic modelling of flow and transport—a review of some recent developments
T Ptak, M Piepenbrink, E Martac - Journal of hydrology, 2004 - Elsevier
In heterogeneous porous aquifers, simulations and predictions of groundwater flow and
solute (contaminant) transport require detailed knowledge of aquifer parameters and their …
solute (contaminant) transport require detailed knowledge of aquifer parameters and their …
Quantitative neuropathology by high resolution magic angle spinning proton magnetic resonance spectroscopy
We describe a method that directly relates tissue neuropathological analysis to medical
imaging. Presently, only indirect and often tenuous relationships are made between imaging …
imaging. Presently, only indirect and often tenuous relationships are made between imaging …
Investigation of apparent diffusion coefficient and diffusion tensor anisotropy in acute and chronic multiple sclerosis lesions
AL Tievsky, T Ptak, J Farkas - American Journal of …, 1999 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: The various stages of multiple sclerosis (MS) are
characterized by de-and remyelination as well as by inflammation. Diffusion MR imaging is …
characterized by de-and remyelination as well as by inflammation. Diffusion MR imaging is …
Itopride in functional dyspepsia: results of two phase III multicentre, randomised, double-blind, placebo-controlled trials
NJ Talley, J Tack, T Ptak, R Gupta, M Giguere - Gut, 2008 - gut.bmj.com
Background: Functional dyspepsia (FD) is a common disorder but there is currently little
efficacious drug therapy. Itopride, a prokinetic approved in several countries, showed …
efficacious drug therapy. Itopride, a prokinetic approved in several countries, showed …
Critically evaluating the purported global “boom” in small hydropower development through spatial and temporal analysis
Due to a rapid proliferation of small hydropower (SHP) in many parts of the world, a
purported boom in SHP development globally has captured significant attention in recent …
purported boom in SHP development globally has captured significant attention in recent …
Borders resurgent: towards a post-Covid-19 global border regime?
An immediate political geographic consequence of the global pandemic is the rapid
imposition of national and subnational borders, particularly where cross-boundary openness …
imposition of national and subnational borders, particularly where cross-boundary openness …
Radiation dose is reduced with a single-pass whole-body multi–detector row CT trauma protocol compared with a conventional segmented method: initial experience
T Ptak, JT Rhea, RA Novelline - Radiology, 2003 - pubs.rsna.org
Radiation dose data were collected from a calibrated multi–detector row computed
tomographic (CT) scanner during trauma CT. One protocol (used with 10 case subjects) …
tomographic (CT) scanner during trauma CT. One protocol (used with 10 case subjects) …
Imaging of head trauma
Imaging is an indispensable part of the initial assessment and subsequent management of
patients with head trauma. Initially, it is important for diagnosing the extent of injury and the …
patients with head trauma. Initially, it is important for diagnosing the extent of injury and the …
Quantification of mass fluxes and natural attenuation rates at an industrial site with a limited monitoring network: a case study
A Bockelmann, D Zamfirescu, T Ptak… - Journal of Contaminant …, 2003 - Elsevier
At many “real world” field sites, the number of available monitoring wells is limited due to
economic or geological reasons. Under such restricted conditions, it is difficult to perform a …
economic or geological reasons. Under such restricted conditions, it is difficult to perform a …
Modelling the effects of tides and storm surges on coastal aquifers using a coupled surface–subsurface approach
J Yang, T Graf, M Herold, T Ptak - Journal of contaminant hydrology, 2013 - Elsevier
Coastal aquifers are complex hydrologic systems because many physical processes
interact:(i) variably saturated flow,(ii) spatial–temporal fluid density variations,(iii) tidal …
interact:(i) variably saturated flow,(ii) spatial–temporal fluid density variations,(iii) tidal …