A5072935287- Electromagnetic Scattering and Analysis
- Mechanical Circulatory Support Devices
- Cardiac Structural Anomalies and Repair
- Ultrasonics and Acoustic Wave Propagation
- Numerical methods in engineering
- Numerical methods in inverse problems
- Electrical and Bioimpedance Tomography
- Infrared Thermography in Medicine
- Advanced Antenna and Metasurface Technologies
- Geotechnical Engineering and Underground Structures
- Cardiac and Coronary Surgery Techniques
- Mobile and Web Applications
- Fuel Cells and Related Materials
- Anomaly Detection Techniques and Applications
- Composite Material Mechanics
- Water Systems and Optimization
- Electromagnetic Simulation and Numerical Methods
- Electromagnetic Compatibility and Measurements
- Microwave Imaging and Scattering Analysis
- Cardiac, Anesthesia and Surgical Outcomes
- Advanced X-ray and CT Imaging
- Mathematical Analysis and Transform Methods
- Additive Manufacturing Materials and Processes
- Thermography and Photoacoustic Techniques
- Mobile Learning in Education
Gdańsk Medical University
1998-2025
Lodz University of Technology
2012-2021
Czech Academy of Sciences, Institute of Computer Science
2013
University of Gdańsk
1998
Abstract OBJECTIVES This study aimed to compare perioperative outcomes and long-term mortality between off-pump coronary artery bypass grafting on-pump in patients with ischaemic cardiomyopathy who had a left ventricle ejection fraction of ≤ 35%. METHODS A retrospective cohort analysis was conducted using data from the Polish National Registry Cardiac Surgery Procedures (KROK) database, encompassing underwent isolated Poland 2012 2022. Patients were divided into two groups: off-pump....
Background: Cardiogenic shock (CS) remains the leading cause of poor prognosis in patients with acute myocardial infarction (AMI), sustaining a high mortality rate 40 to 50% within 30 days. Aims: In this unique analysis two national all-comers, real-life registries including AMI complicated by CS, for whom early revascularization was planned, we aimed compare effect percutaneous coronary (PCI) and artery bypass grafting (CABG) on 30-day 1-year all-cause mortality. Methods: The study included...
The radial artery (RA) beside the left internal mammary and veins is often used for coronary bypass grafting. aim of this study was to assess arm temperature changes after removal determine whether there an effect on hand function. Between April December 2005, fifty patients underwent myocardial revascularization employing pedicle RA as one grafts. protocol included thermographic clinical examination day before surgery sixth procedure. An Agema 900 Thermovision System evaluation....
The diffraction of elastic harmonic waves by a finite plane tunnel crack is studied. A solution derived from an analysis the integral equations describing problem, using Wiener–Hopf technique and method compound asymptotic expansions. Taking into account successive reflections Rayleigh tips, approximate analytical expressed in closed-form that computationally effective yields accurate results resonance region dimensionless wave numbers. Both direct inverse scattering problems are considered.
This paper presents the results of experimental performance an innovative left ventricular assist device working on a specially designed test stand. The introduced invention is mainly applied for supporting heart in patients with end-stage failure accompanied by mitral valve regurgitation and pulmonary hypertension. Moreover, developed has form flexible balloon forming intracardiac inert gas-filled chamber, which divided into two smaller balloons (valve ventricular) inflated gas during use....
A two-dimensional problem of shear horizontal (SH) waves scattering by a finite width planar elastic (piezoelectric) inclusion partially debonded from its surrounding matrix is investigated using the effective boundary conditions and singular integral equations technique. The case large rigidity inclusions with blunted tips considered, in which upper face perfectly bonded to matrix. debonding region modeled as interface crack non-contacting faces. Using Green theorem mixed value reduced...
An outlier is an observation (or measurement) that different with respect to the other values contained in a given data set. Outliers can occur due several causes. The measurement be incorrectly observed, recorded or processed otherwise correctly measured but represents rare event. In this paper it shown observed contain differ from expected ones and interpreted as reality are caused by specific physical phenomenon.
A measurement technique for evaluation of processes occurring in the myocardium during blood flow arrest is presented. The system devoted to monitoring state off-pump coronary artery by-pass grafting, i.e. a surgical operation performed on beating heart. substantial part probe whose construction similar mechanical stabilizer. Such stabilizer used preventing from moving, thus it enables stitching graft and artery. In comparison commercially available developed enhanced with set electrodes....
A direct collocation technique is applied in modeling and simulation for scattering from a strip with PEC partially PMC boundaries. By using the Green theorem mixed boundary value problem reduced to system of hypersingular integral equations. Numerical results fields characteristics are presented.
In this paper the usage of persuasive technologies in computer systems is presented. Different kinds and various ways persuasion are described. Suggested scenarios for proposed. The description mobile application developed Android platform that utilizes also
Background: Octogenarians constitute the fastest-growing segment within contemporary cardiac surgery, yet precise risk assessment in this age group remains challenging. Aims: This study aimed to evaluate EuroSCORE II reliability octogenarians undergoing isolated coronary surgery and create an adjustment formula if necessary. Patients Methods: All who had Poland from January 2012 December 2023, recorded Polish National Registry of Cardiac Surgical Procedures (KROK registry), were...
Abstract This paper applies the collocation method to modeling and simulation of scattering from a strip with Dirichlet boundary condition on upper interface Neumann conditions two subintervals along lower interface. Green's theorem is used reduce mixed value problem system three coupled hypersingular singular integral equations. The numerical results backscattering field characteristics are presented compared high‐frequency approximations.
A direct collocation technique is applied in modeling and simulation for scattering from a strip with PEC-impedance boundary conditions. By using the Green theorem mixed value problem reduced to system of hypersingular integral equations. Numerical results fields characteristics are presented.
This paper describes a possible usage of Radio Frequency Identification as mean asset localisation. The development the working solution localisation system based on measured distance between emitter and receiver is presented also. crucial part research was design algorithms responsible for processing information acquired from reader into an applicable format. accomplished revealed that Technology real-time system. evaluation created put to comparison with existing systems has shown...
A two-dimensional problem of electromagnetic wave diffraction by a plane strip with different boundary conditions on its surfaces is in the focus our study. The diffracted field expressed an integral terms induced electric and magnetic current densities. Applying representation theorem for scattering field, reduced to solutions equations. Numerical high frequency asymptotics zone inclusion are presented.