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A recent report from Chulalongkorn University in Bangkok, Thailand discusses new research findings on wound infections. The study proposes a simple and portable 3D origami-fluidic paper-based electrochemical sensor for detecting myeloperoxidase (MPO) activity in wound exudate samples. The device utilizes an origami pattern to manipulate the flow and allow for electrochemical reactions on the electrode surface. The researchers found that the device can detect MPO activity in a range of 0.5-5 U/ml and can differentiate between infected and non-infected wounds. This device shows promise for rapid and portable MPO activity detection in resource-limited settings. [Extracted from the article]

A quiz concerning the topic "Electrochemistry" of class XII is presented.

The article provides information on various concepts related to electrochemistry, including conductance, conductivity, equivalent conductivity, cell potential, EMF of a cell, Faraday's laws of electrolysis, Kohlrausch's law, primary and secondary batteries, electrochemical series, and applications of electrochemical series.

• Systematic analysis of cyclic plasticity behaviour for cathode coating in Li-ion battery. • Establishment of strain fatigue life curve for cathode active layer. • Demonstration of ratcheting behavior occurring simultaneously with fatigue failure. • Significant effect of thickness of cathode coating on the shakedown and ratcheting boundaries. • Low cycle fatigue failure at the centre, with ratcheting mechanism on the edge of the cathode. The cyclic plasticity behaviour and failure mechanism of the cathode material in lithium-ion batteries urgently need to be understood due to the cyclic lithium-ion diffusion-induced stress during charging-discharging process. Many researches have focused on the shakedown and ratcheting responses of lithium-ion battery anode. However, the systematic investigation on the plasticity behaviour of lithium-ion battery cathode is still lacking. In this paper, the cyclic plasticity behaviour of LiNi x Mn y Co z O 2 electrode subjected to cyclic lithiation/delithiation under a constant mechanical load is investigated comprehensively. The shakedown, ratcheting and fatigue analyses of active layer are conducted using direct numerical techniques based on the Linear Matching Method framework, while coin cell electrochemical experiments are performed simultaneously to support the analysis. The effect of thickness of coating on the shakedown and ratcheting response is investigated, and the thickness is confirmed as a crucial parameter that can influence the battery performance. The strain-fatigue life curve is also obtained to effectively predict the life of active coating. Moreover, the numerical results reveal the existence of low cycle fatigue at the centre, and ratcheting mechanism on the edge of the cathode, which is consistent well with the experimental result. [ABSTRACT FROM AUTHOR]

A report from Shahid Bahonar University of Kerman in Iran discusses research findings on cancer. The researchers developed a carbon paste electrode modified with a nanocomposite containing graphene oxide and metal organic framework-235 (MOF-235/GO/CPE) for the electrochemical detection of the anticancer drug doxorubicin (DOX). The sensor showed good sensitivity and selectivity for DOX, with a detection limit of 0.005 μM and a wide dynamic concentration range. The researchers also explored the use of the sensor for the determination of DOX in the presence of dacarbazine (DCB). The research concluded that the sensor demonstrated satisfactory recoveries and was effective for the detection of DOX and DCB in real samples. [Extracted from the article]

A recent report from the University of Missouri discusses the use of nanostructured electrodes for the electrochemical detection of hormones. The researchers highlight the advantages of nanostructured electrodes, such as their high surface area and sensitivity, in hormone detection. They also explore the use of various materials, such as carbon nanotubes and metal nanoparticles, for electrode design. The research concludes that these nanostructured electrode-based assays have the potential to improve hormone regulation and healthcare by enabling early disease diagnosis and customized therapy. [Extracted from the article]

Anatomy of a lithium-ion battery PHOTO (COLOR): Watch how lithium ions and electrons move when a battery is discharging and charging. The lithium ions move within the battery to the cathode through an electrolyte. K. N. Wood et al/ACS Central Science 2016 With a lithium-metal anode, the battery would be doing the thing avoided in normal lithium-ion batteries: making metallic lithium during its recharge. [Extracted from the article]