Carbonization-Temperature-Dependent Electrical Properties of Carbon Nanofibers-From Nanoscale to Macroscale.

An exact understanding of the conductivity of individual fibers and their networks is crucial to tailor the overall macroscopic properties of polyacrylonitrile (PAN)-based carbon nanofibers (CNFs). Therefore, microelectrical properties of CNF networks and nanoelectrical properties of individual CNFs, carbonized at temperatures from 600 to 1000 °C, are studied by means of conductive atomic force microscopy (C-AFM). At the microscale, the CNF networks show good electrical interconnections enabling a homogeneously distributed current flow.

Bonding diversity in rock salt-type tellurides: examining the interdependence between chemical bonding and materials properties.

Future technologies are in need of solid-state materials showing the desired chemical and physical properties, and designing such materials requires a proper understanding of their electronic structures. In this context, recent research on chalcogenides, which were classified as 'incipient metals' and included phase-change data storage materials as well as thermoelectrics, revealed a remarkable electronic behavior and possible state (dubbed 'metavalency') proposed for the frontier between entire electron localization and delocalization. Because the members of the family of the polar intermetallics vary widely in their properties as well as electronic structures, one may wonder if the aforementioned electronic characteristics are also achieved for certain polar intermetallics.

Immunogenicity and efficacy of mRNA COVID-19 vaccine MRT5500 in preclinical animal models.

Emergency use authorization of COVID vaccines has brought hope to mitigate pandemic of coronavirus disease 2019 (COVID-19). However, there remains a need for additional effective vaccines to meet the global demand and address the potential new viral variants. mRNA technologies offer an expeditious path alternative to traditional vaccine approaches.

Use of World Health Organization Guidelines to Improve Hand Washing Efficacy.

Background: Hand washing continues to be the number one most effective way to prevent the spread of germs. This quality improvement project examines whether a hands-on soap and water hand washing tutorial increases the quality of hand washing technique.

Method: The Glow Team developed and presented an evidence-based hands-on teaching tutorial demonstrating proper hand washing technique as recommended by the World Health Organization to 100 emergency department health care workers.

Evaluation of Noninvasive Thermometers in an Endoscopy Setting.

The measurement of body temperature is an important aspect of assessment prior to invasive procedures. The purpose of the study was to determine the level of agreement between temporal artery, noncontact infrared, and disposable oral electronic thermometers to a clinical reference device (nondisposable oral electronic thermometer) in outpatients prior to an endoscopic procedure. A descriptive, method-comparison study design was used to compare 3 noninvasive thermometers with a clinical reference device.