Publications by authors named "C McEwen"

Arriving at the University of Virginia in the autumn of 1969, Donald Hunt began his 50+ year career in academics with the study of organometallic chemistry, on which he had done his PhD thesis work, and mass spectrometry, to which he was introduced while a postdoc in Klaus Biemann's laboratory at the Massachusetts Institute of Technology. In the 1970s, Hunt's lab pioneered the use of negative chemical ionization (CI) to enhance sensitivity for studying organic molecules, developed a system for simultaneously obtaining positive and negative CI spectra to augment structure elucidation, and built a prototype triple quadrupole instrument so effective at collisional dissociation that its commercial counterpart became the analytical instrument of choice for mixture analysis for the next decade and beyond. Foreseeing that the future lay in the analysis of biological molecules, by the end of the decade Hunt shifted his focus to peptides.

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This covers discovery and mechanistic aspects as well as initial applications of novel ionization processes for use in mass spectrometry that guided us in a series of subsequent discoveries, instrument developments, and commercialization. matrix-assisted ionization on an intermediate pressure matrix-assisted laser desorption/ionization source the use of a laser, high voltages, or any other added energy was simply unbelievable, at first. Individually and as a whole, the various discoveries and inventions started to paint, , an exciting new picture and outlook in mass spectrometry from which key developments grew that were at the time unimaginable, and continue to surprise us in its simplistic preeminence.

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Over the last decades, the abandonment of traditional dietary patterns, such as the Mediterranean diet, represents an important threat for human health and environmental safeguard. The DELICIOUS project aims to promote healthy lifestyles among children and adolescents by implementing activities and tools to increase the adherence to the Mediterranean Diet with an attention to the environmental impacts of the diet. This study protocol describes the DELICIOUS project as a single-arm, uncontrolled behavioural intervention providing formal and non-formal education activities, development of new snacks and recipe reformulation, web/mobile app development, and physical activities to school children and adolescents in five European countries.

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Article Synopsis
  • The paper discusses a new approach to ionization in mass spectrometry (MS) that doesn’t rely on high-energy inputs like voltage or lasers but instead uses sublimation and evaporation processes in a controlled pressure environment.
  • It explores how these innovative ionization methods enable the efficient conversion of both volatile and non-volatile compounds from solids and liquids into gas-phase ions, leading to more accurate and reproducible results in MS analysis.
  • The research highlights the potential coexistence of traditional and novel ionization techniques in the same mass spectrometer, with a focus on applications such as clinical testing and portable MS technologies, showcasing advancements in the field from 2010 to 2023.
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Minimally invasive cardiac surgery for congenital heart disease has gained increasing acceptance within the specialty. However, most suitable candidates are still treated with a conventional median sternotomy. Adoption of minimally invasive techniques has proven essential in the surgical repair of acquired heart disease to increase patient satisfaction and to remain competitive in an ever-changing medical field.

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