Helena U. Zacharias

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In electron-transfer processes, spin effects normally are seen either in magnetic materials or in systems containing heavy atoms that facilitate spin-orbit coupling. We report spin-selective transmission of electrons through self-assembled monolayers of double-stranded DNA on gold. By directly measuring the spin of the transmitted electrons with a Mott(More)
Acute kidney injury (AKI) is a frequent complication of sepsis, major surgery or nephrotoxic medication use. It is associated with high morbidity and mortality. In an effort to identify novel biomarkers capable of predicting the development of AKI after cardiac surgery with cardiopulmonary bypass use, urine specimens were collected before and at 4 and 24 h(More)
Motivation: Metabolomics data is typically scaled to a common reference like a constant volume of body fluid, a constant creatinine level, or a constant area under the spectrum. Such normalization of the data, however, may affect the selection of biomarkers and the biological interpretation of results in unforeseen ways. Results: First, we study how the(More)
Abbreviations 1D One-dimensional 1 H Hydrogen-1 (proton) 2D Two-dimensional 13 C Carbon-13 31 P Phosphorus-31 ADPKD Autosomal dominant polycystic kidney disease Acetyl-CoA Acetyl coenzyme A ANOVA Analysis of variance ATP Adenosine triphosphate BHBA Beta-hydroxybutyric acid °C Degrees Celsius Ca Calcium ck Choline kinase CPMG Carr, Purcell, Meiboom, Gill DIM(More)
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