25 research outputs found
Telemedyczna terapia poznawczo-behawioralna
Telepsychiatry is the new branch of psychiatry. The method of the treatment gives new possibility to the physician andthe patient, including videoconferencing, videoeducation, compliance control and different form of trainings. Telemedicinewas well confirmed in psychiatry as the equivalent therapeutic way of treatment. Interesting is if telemedicinemay be useful for psychotherapy.Authors overviewed the research studies on application of telemedicine in cognitive behavioral therapy (CBT). This schoolof psychotherapy has very good medical evidence for its effectiveness in the treatment of different psychiatric illnesses.The question was if it may be effective when used in telemedical mode.Our analysis indicated, that CBT is the same effective when performed via videoconferencing system and in traditionalway. In the end authors tried to discuss, if the telemedical contact with psychotherapist may substitute the real faceto face contact.Telepsychiatria jest nową dziedziną psychiatrii. Ta metoda leczenia daje lekarzowi nowe możliwości zarówno lekarzowi jak i pacjentowi, włączając w to system videokonferencyjny, videoedukację, kontrolę zażywania leków i różne formy treningów. Skuteczność terapeutyczna telemedycyny została potwierdzona w psychiatrii. Interesującą kwestią jest, czy telemedycyna może być użyteczna dla psychoterapii. Autorzy dokonali przeglądu prac badawczych, dotyczących zastosowania telemedycyny w terapii poznawczo-bahawioralnej (CBT). Ta szkoła psychoterapii dysponuje bardzo dobrymi dowodami skuteczności w wielu schorzeniach psychiatrycznych. Kwestią było, czy może ona być skuteczna, kiedy jest świadczona sposobem telemedycznym. Nasza analiza wskazała, że CBT jest tak samo skuteczna w formie telemedycznej i w formie tradycyjnej. Na koniec autorzy autorzy dyskutują kwestię czy telemedyczny kontakt z psychoterapeutą może zastąpić kontakt twarzą w twarz
Silver is not equal to silver : synthesis and evaluation of silver nanoparticles with low biological activity, and their incorporation into alanine-based hydrogel
A new type of silver nanoparticles (AgNPs) was prepared and comprehensively studied. Scanning electron microscopy (SEM) and dynamic light scattering (DLS) analyses indicated that 24 nm AgNPs with narrow size distribution were obtained while Z-potential confirms their good stability. The composites of the obtained AgNPs with nontoxic-nature-inspired hydrogel were formed upon cooling of the aqueous solution AgNPs and C12Ala. The thermal gravimetric analysis (TGA) and the differential scanning calorimetry (DSC) do not show significant shifts in the characteristic temperature peaks for pure and silver-enriched gels, which indicates that AgNPs do not strongly interact with C12Ala fibers, which was also confirmed by SEM. Both AgNPs alone and in the assembly with the gelator C12Ala were almost biologically passive against bacteria, fungus, cancer, and nontumor human cells, as well as zebra-fish embryos. These studies proved that the new inactive AgNPs-doped hydrogels have potential for the application in therapy as drug delivery media
Study design and rationale for biomedical shirt-based electrocardiography monitoring in relevant clinical situations: ECG-shirt study
Background: Today, the main challenge for researchers is to develop new technologies which may help to improve the diagnoses of cardiovascular disease (CVD), thereby reducing healthcare costs and improving the quality of life for patients. This study aims to show the utility of biomedical shirt-based electrocardiography (ECG) monitoring of patients with CVD in different clinical situations using the Nuubo® ECG (nECG) system.
Methods: An investigator-initiated, multicenter, prospective observational study was carried out in a cardiology (adult and pediatric) and cardiac rehabilitation wards. ECG monitoring was used with the biomedical shirt in the following four independent groups of patients: 1) 30 patients after pulmonary vein isolation (PVI), 2) 30 cardiac resynchronization therapy (CRT) recipients, 3) 120 patients during cardiac rehabilitation after myocardial infarction, and 4) 40 pediatric patients with supraventricular tachycardia (SVT) before electrophysiology study. Approval for all study groups was obtained from the institutional review board. The biomedical shirt captures the electrocardiographic signal via textile electrodes integrated into a garment. The software allows the visualization and analysis of data such as ECG, heart rate, arrhythmia detecting algorithm and relative position of the body is captured by an electronic device.
Discussion: The major advantages of the nECG system are continuous ECG monitoring during daily activities, high quality of ECG recordings, as well as assurance of a proper adherence due to adequate comfort while wearing the shirt. There are only a few studies that have examined wearable systems, especially in pediatric populations.
Trial registration: This study is registered in ClinicalTrials.gov: Identifier NCT03068169. (Cardiol J 2018; 25, 1: 52–59
Bogactwo i bieda: próba refleksji humanistycznej
Ze wstępu: "Niniejsza książka jest efektem pracy zespołu realizującego program badań „Bogactwo
i bieda - postawy, opinie, zachowania (badania w środowisku studentów Akademii Górniczo-
Hutniczej)” w ramach grantu uczelnianego (G. U. Z. 10.430).
Projekt ten nawiązuje do tradycji badań środowiska studenckiego AGH, które zapoczątkował
przed laty profesor Julian Bugiel. Prezentowana praca tworzy pewną całość
wraz z wątkami problemowymi realizowanych wcześniej badań: w latach 2000-2001
„Agresja i przemoc - postawy, opinie, zachowania (badania w środowisku studentów
AGH)” (G. U. Z. 21.10.430.69), jak również z badaniami przeprowadzonymi w roku 2002
„Tolerancja i nietolerancja - postawy, opinie, zachowania (badania w środowisku studentów
AGH)” (G. U. Z. 21.10.430.48)."(...
Influence of surface doping of carbon replicas with nitrogen on catalytic activity in oxidative dehydrogenation of ethylbenzene
Przy użyciu metody nanoreplikacji strukturalnej otrzymano mezoporowate materiały węglowe stosując żel krzemionkowy jako szablon strukturotwórczy oraz sacharozę jako prekursor węgla. Materiały karbonizowano w temperaturach z zakresu 650-850°C, a następnie usunięto SiO2 przez rozpuszczenie w roztworze HF. Otrzymane węgle poddano modyfikacji działając gazowym NH3 w podwyższonej temperaturze (500-750°C) przez 1-6 godzin celem wygenerowania powierzchniowych ugrupowań azotowych. Zsyntetyzowane materiały scharakteryzowano pod kątem właściwości strukturalnych (proszkowa dyfrakcja rentgenowska), teksturalnych (niskotemperaturowa adsorpcja azotu) oraz powierzchniowych (spektroskopia FT-IR oraz XPS). Określono skład objętościowy (analiza elementarna oraz termograwimetria) i powierzchniowy (XPS). Stwierdzono, że modyfikacja NH3 prowadziła do rozwinięcia powierzchni właściwej oraz porowatości badanych materiałów. Ilość wprowadzanych grup azotowych (głównie pirydynowe, pirolowe oraz N-tlenek pirydyny) wzrastała wraz z podnoszeniem temperatury modyfikacji i wydłużeniem czas ekspozycji. Tworzenie dodatkowych ugrupowań powierzchniowych sprzyjało podnoszeniu aktywności katalitycznej materiałów węglowych w utleniającym odwodornieniu etylobenzenu. Najwyższe wydajności styrenu uzyskano dla preparatów modyfikowanych w 500°C, które zawierały stosunkowo niewielkie ilości grup azotowych.Mesoporous carbons were synthesized by structural nanoreplication using silica gel as a template and sucrose as a carbon precursor. The materials were carbonized at temperatures within the range of 650-850°C, and then the template was removed by dissolution in HF. The obtained carbons were subsequently modified by the treatment with gaseous NH3 at elevated temperature (500-750°C) for 1-6 hours in order to generate nitrogen-containing surface functionalities. The synthesized materials were characterized with respect to their structural (powder X-ray diffraction), textural (low-temperature N2 adsorption) and surface properties (FT-IR and XPS). The bulk (elemental analysis and thermogravimetry) and surface (XPS) composition were determined. It was found that modification with NH3 resulted in an enhancement of surface area and porosity of the studied materials. The amount of introduced nitrogen-containing moieties (mainly pyridine- and pyrrole-like as well as pyridine N-oxide) increased with the modification temperature and exposure time. The formation of additional superficial groups promoted the catalytic activity of the carbon materials in the oxidative dehydrogenation of ethylbenzene. The highest styrene yields were achieved over the samples modified at 500°C, which contained relatively low amounts of nitrogen species
Influence of Temperature on Rising Bubble Dynamics in Water and n-pentanol Solutions
Data in the literature on the influence of water temperature on the terminal velocity of a single rising bubble are highly contradictory. Different variations in bubble velocity with temperature are reported even for potentially pure systems. This paper presents a systematic study on the influence of temperature between 5 °C and 45 °C on the motion of a single bubble of practically constant size (equivalent radius 0.74 ± 0.01 mm) rising in a clean water and n-pentanol solution of different concentrations. The bubble velocity was measured by a camera, an ultrasonic sensor reproduced in numerical simulations. Results obtained by image analysis (camera) were compared to the data measured by an ultrasonic sensor to reveal the similar scientific potential of the latter. It is shown that temperature has a significant effect on the velocity of the rising bubble. In pure liquid, this effect is caused only by modifying the physicochemical properties of the water phase, not by changing the hydrodynamic boundary conditions at the bubble surface. In the case of the solutions with surface-active substances, the temperature-change kinetics of the dynamic adsorption layer formation facilitate the immobilization of the liquid/gas interface
Industrial implementations of control algorithms for voltage inverters supplying induction motors
This article discusses the most important issues regarding the implementation of digital algorithms for control and drive technology in industrial machines, especially in open mining machines. The article presents the results of tests in which the algorithm and drive control parameter settings were not selected appropriately for voltage-fed induction motors, and where the control speed was not verified by any of the available motoring or simulation methods. We then show how the results can be improved using field-oriented control algorithms and deep parameters analysis for sensorless field-oriented performance
Correction Mechanism for Balancing Driving Torques in an Opencast Mining Stacker with an Induction Motor and Converter Drive System
This article describes a correction mechanism for balancing torques in moving drives. The steering system is controlled by a programable logic controller (PLC), a field-oriented control (FOC) algorithm in the drive inverter system, Process Fieldbus (PROFIBUS), and a Decentralized Peripherals (DP) network. The mechanism was applied in an opencast mining stacker with an induction motor and converter drive system. The mechanism was realized using SIMOLINK (Siemens Motion Link, SL) via fiber optic cables. Motor torque correction was applied in each electrical drive of the stacker machine. The main results presented in this paper were obtained directly from the machine. Selected digital control problems related to open mining stackers are discussed