10 research outputs found
EEG Signal Analysis of Writing and Typing between Adults with Dyslexia and Normal Controls
EEG is one of the most useful techniques used to represent behaviours of the brain and helps explore valuable insights through the measurement of brain electrical activity. Hence, plays a vital role in detecting neurological conditions. In this paper, we identify some unique EEG patterns pertaining to dyslexia, which is a learning disability with a neurological origin. Although EEG signals hold important insights of brain behaviours, uncovering these insights are not always straightforward due to its complexity. We tackle this using machine learning and uncover unique EEG signals generated in adults with dyslexia during writing and typing as well as optimal EEG electrodes and brain regions for classification. This study revealed that the greater level of difficulties seen in individuals with dyslexia during writing and typing compared to normal controls are reflected in the brainwave signal patterns
Constrictive pericarditis in a post–renal transplant patient: a case report
INTRODUCTION: Constrictive pericarditis is a rare complication in the post–renal transplant period. It poses a diagnostic dilemma even in the modern era. Its incidence is not known and tuberculosis is implicated in some of the cases. CASE PRESENTATION: A 54-year-old Sri Lankan man, in the sixth year of transplant presented with resistant ascites, shortness of breath and elevated creatinine from the baseline. Pre-transplant he was empirically treated for tuberculosis pericarditis and was on isoniazid prophylaxis for 1 year following transplantation. Two-dimensional echocardiography and cardiac catheterization confirmed the diagnosis, and pericardiectomy was performed, which resulted in full resolution of the symptoms as well as the graft function. The histology or bacteriology failed to demonstrate features suggestive of tuberculosis in the surgical specimen. CONCLUSION: In constrictive pericarditis, a causative factor is difficult to find. Isoniazid prophylaxis shows benefit in preventing tuberculosis-associated constrictive pericarditis
Exploring the challenges in developing and managing digital agility among Sri Lankan family business owners during the economic crisis situation
The purpose of this qualitative study is to explore the ongoing post-pandemic challenges in developing and managing digital agility among Sri Lankan family business owners. This study used a mono-method qualitative approach to identify the management strategies using the self-determination theory and social exchange theory to cope with digital agility among Sri Lankan family business owners. Authors interviewed 25 family business owners in Sri Lanka and assessed the findings using the NVivo software. A total of five thematic findings have been identified as challenges in developing and managing digital agility among Sri Lankan Family Business owners. According to this study, digital capability plays a significant role in supporting top management to apply ambidextrous leadership during turbulent times. Findings contributes to the family business owners in Sri Lanka to identify proper strategies in overcoming the challenges associated with developing and managing digital agility of family business firms
EEG Signal Analysis of Writing and Typing between Adults with Dyslexia and Normal Controls
EEG is one of the most useful techniques used to represent behaviours of the brain and helps explore valuable
insights through the measurement of brain electrical activity. Hence, plays a vital role in detecting neurological
conditions. In this paper, we identify some unique EEG patterns pertaining to dyslexia, which is a learning
disability with a neurological origin. Although EEG signals hold important insights of brain behaviours,
uncovering these insights are not always straightforward due to its complexity. We tackle this using machine
learning and uncover unique EEG signals generated in adults with dyslexia during writing and typing as
well as optimal EEG electrodes and brain regions for classification. This study revealed that the greater level
of difficulties seen in individuals with dyslexia during writing and typing compared to normal controls are
reflected in the brainwave signal patterns
EEG Signal Analysis of Writing and Typing between Adults with Dyslexia and Normal Controls
EEG is one of the most useful techniques used to represent behaviours of the brain and helps explore valuable insights through the measurement of brain electrical activity. Hence, plays a vital role in detecting neurological conditions. In this paper, we identify some unique EEG patterns pertaining to dyslexia, which is a learning disability with a neurological origin. Although EEG signals hold important insights of brain behaviours, uncovering these insights are not always straightforward due to its complexity. We tackle this using machine learning and uncover unique EEG signals generated in adults with dyslexia during writing and typing as well as optimal EEG electrodes and brain regions for classification. This study revealed that the greater level of difficulties seen in individuals with dyslexia during writing and typing compared to normal controls are reflected in the brainwave signal patterns
Quantitative Detection Method of Hydroxyapatite Nanoparticles Based on Eu<sup>3+</sup> Fluorescent Labeling in Vitro and in Vivo
One major challenge for application
of hydroxyapatite nanoparticles (nHAP) in nanomedicine is the quantitative
detection method. Herein, we exploited one quantitative detection
method for nHAP based on the Eu<sup>3+</sup> fluorescent labeling
via a simple chemical coprecipitation method. The trace amount of
nHAP in cells and tissues can be quantitatively detected on the basis
of the fluorescent quantitative determination of Eu<sup>3+</sup> ions
in nHAP crystal lattice. The lowest concentration of Eu<sup>3+</sup> ions that can be quantitatively detected is 0.5 nM using DELFIA
enhancement solution. This methodology can be broadly applicable for
studying the tissue distribution and metabolization of nHAP in vivo
Luminescence Enhanced Eu<sup>3+</sup>/Gd<sup>3+</sup> Co-Doped Hydroxyapatite Nanocrystals as Imaging Agents In Vitro and In Vivo
Biocompatible, biodegradable,
and luminescent nano material can be used as an alternative bioimaging
agent for early cancer diagnosis, which is crucial to achieve successful
treatment. Hydroxyapatite (HAP) nanocyrstals have good biocompatibility
and biodegradability, and can be used as an excellent host for luminescent
rare earth elements. In this study, based on the energy transfer from
Gd<sup>3+</sup> to Eu<sup>3+</sup>, the luminescence enhanced imaging
agent of Eu/Gd codoping HAP (HAP:Eu/Gd) nanocrystals are obtained
via coprecipitation with plate-like shape and no change in crystal
phase composition. The luminescence can be much elevated (up to about
120%) with a nonlinear increase versus Gd doping content, which is
due to the energy transfer (<sup>6</sup>P<sub>J</sub> of Gd<sup>3+</sup> → <sup>5</sup>H<sub>J</sub> of Eu<sup>3+</sup>) under 273
nm and the possible combination effect of the cooperative upconversion
and the successive energy transfer under 394 nm, respectively. Results
demonstrate that the biocompatible HAP:Eu/Gd nanocrystals can successfully
perform cell labeling and in vivo imaging. The intracellular HAP:Eu/Gd
nanocrystals display good biodegradability with a cumulative degradation
of about 65% after 72 h. This biocompatible, biodegradable, and luminescence
enhanced HAP:Eu/Gd nanocrystal has the potential to act as a fluorescent
imaging agent in vitro and in vivo