Towards Bloodless Potassium Measurement from ECG using Neuro-Fuzzy Systems [PDF]
arXiv, 2023 Potassium disorders are generally asymptomatic, potentially lethal, and common in patients with renal or cardiac disease. The morphology of the electrocardiogram (ECG) signal is very sensitive to the changes in potassium ions, so ECG has a high potential for detecting dyskalemias before laboratory results.
arxiv
Duodenal Histoplasmosis Presenting with Upper Gastrointestinal Bleeding in an AIDS Patient
Case Reports in Gastrointestinal Medicine, Volume 2012, Issue 1, 2012., 2012 Gastrointestinal histoplasmosis (GIH) is common in patients with disseminated disease but only rarely comes to clinical attention due to the lack of specific signs and symptoms. We report the unusual case of a 33‐year‐old Caucasian male with advanced AIDS who presented with upper GI bleeding from diffuse erosions throughout the duodenum.
Michael A. Spinner +5 more
wiley +1 more source
The circumstellar matter of supernova 2014J and the core-degenerate scenario [PDF]
, 2015 I show that the circumstellar matter (CSM) of the type Ia supernova 2014J is too massive and its momentum too large to be accounted for by any but the core-degenerate (CD) scenario for type Ia supernovae. Assuming the absorbing gas is of CSM origin, the several shells responsible of the absorption potassium lines are accounted for by a mass loss ...
arxiv +1 more source
Approaching high-performance potassium-ion batteries via advanced design strategies and engineering
Science Advances, 2019 A general review proposes research strategies for overcoming essential issues in the research of potassium-ion batteries. Potassium-ion batteries (PIBs) have attracted tremendous attention due to their low cost, fast ionic conductivity in electrolyte ...
Wenchao Zhang, Yajie Liu, Zaiping Guo
semanticscholar +1 more source
Dynamic response and electronic structure of potassium doped picene investigated by electron energy-loss spectroscopy [PDF]
Phys. Rev. B 83, 144501 (2011), 2011 We performed electron energy-loss spectroscopy studies in order to get a deeper insight into the electronic properties of potassium intercalated picene, a recently discovered superconductor. A comparison of the loss function of the undoped and doped compound shows the appearance of a new peak in the optical gap, which we attribute to the charge carrier
arxiv +1 more source
Absence of photoemission from the Fermi level in potassium intercalated picene and coronene films: structure, polaron or correlation physics? [PDF]
J. Chem. Phys. 136, 134503 (2012), 2012 The electronic structure of potassium intercalated picene and coronene films has been studied using photoemission spectroscopy. Picene has additionally been intercalated using sodium. Upon alkali metal addition core level as well as valence band photoemission data signal a filling of previously unoccupied states of the two molecular materials due to ...
arxiv +1 more source
Modulation Transfer Spectroscopy of the D1 Transition of Potassium: Theory and Experiment [PDF]
arXiv, 2023 We report on a study of modulation transfer spectroscopy of the $4\textrm{S}_{1/2}\rightarrow 4\textrm{P}_{1/2}$ ($D_{1}$) transition of naturally abundant potassium in a room-temperature vapour cell. This transition is critical for laser cooling and optical pumping of potassium and our study is therefore motivated by the need for robust laser ...
arxiv
Structural and electronic changes of pentacene induced by potassium doping [PDF]
Phys. Rev. B 95, 134112 (2017), 2017 Potassium is introduced into the crystalline herringbone structure of pentacene searching for a compound showing metallic electronic transport properties and, hopefully, superconductivity at small enough temperatures. Several possible structures for stoichiometric KPentacene (1:1), K2Pentacene (2:1) and K3Pentacene (3:1) compounds are theoretically ...
arxiv +1 more source
A Fluorescent Ratiometric Potassium Sensor Based on IPG4-Silica Microparticles for Selective Detection and Fluorescence Imaging of Potassium Cations [PDF]
Journal of Materials Chemistry B 2024,10573Potassium cations play many important roles in living organisms, especially in electro-physiology, since they are involved in neurotransmission and muscle contractions. We report the synthesis of a ratiometric fluorescent microsensor for potassium (K+) detection, based on the fluorescent probe ION potassium green 4.
arxiv +1 more source
Potassium: A Vital Regulator of Plant Responses and Tolerance to Abiotic Stresses
, 2018 Among the plant nutrients, potassium (K) is one of the vital elements required for plant growth and physiology. Potassium is not only a constituent of the plant structure but it also has a regulatory function in several biochemical processes related to ...
M. Hasanuzzaman +8 more
semanticscholar +1 more source