Intrinsic EPR in La2-xSrxCuO4: Manifestation of three-spin polarons

Electron-paramagnetic resonance (EPR) measurements on La2-xSrxCuO4provide experimental evidence of a three-spin polaren, consisting of two Cu2+ ions and one p hole. The symmetry properties and the peculiar temperature dependence of the g values of the EPR line indicate the presence of dynamical Jahn-Teller distortions and formation of a collective mode of polarons and surrounding strongly correlated Cu ions (bottlenecked regime)

Fractional smoothness and applications in finance

This overview article concerns the notion of fractional smoothness of random variables of the form $g(X_T)$, where $X=(X_t)_{t\in [0,T]}$ is a certain diffusion process. We review the connection to the real interpolation theory, give examples and applications of this concept. The applications in stochastic finance mainly concern the analysis of discrete time hedging errors. We close the review by indicating some further developments.Comment: Chapter of AMAMEF book. 20 pages

A Hedged Monte Carlo Approach to Real Option Pricing

In this work we are concerned with valuing optionalities associated to invest or to delay investment in a project when the available information provided to the manager comes from simulated data of cash flows under historical (or subjective) measure in a possibly incomplete market. Our approach is suitable also to incorporating subjective views from management or market experts and to stochastic investment costs. It is based on the Hedged Monte Carlo strategy proposed by Potters et al (2001) where options are priced simultaneously with the determination of the corresponding hedging. The approach is particularly well-suited to the evaluation of commodity related projects whereby the availability of pricing formulae is very rare, the scenario simulations are usually available only in the historical measure, and the cash flows can be highly nonlinear functions of the prices.Comment: 25 pages, 14 figure

In Vivo Assessment of Cold Adaptation in Insect Larvae by Magnetic Resonance Imaging and Magnetic Resonance Spectroscopy

Background Temperatures below the freezing point of water and the ensuing ice crystal formation pose serious challenges to cell structure and function. Consequently, species living in seasonally cold environments have evolved a multitude of strategies to reorganize their cellular architecture and metabolism, and the underlying mechanisms are crucial to our understanding of life. In multicellular organisms, and poikilotherm animals in particular, our knowledge about these processes is almost exclusively due to invasive studies, thereby limiting the range of conclusions that can be drawn about intact living systems. Methodology Given that non-destructive techniques like 1H Magnetic Resonance (MR) imaging and spectroscopy have proven useful for in vivo investigations of a wide range of biological systems, we aimed at evaluating their potential to observe cold adaptations in living insect larvae. Specifically, we chose two cold-hardy insect species that frequently serve as cryobiological model systems–the freeze-avoiding gall moth Epiblema scudderiana and the freeze-tolerant gall fly Eurosta solidaginis. Results In vivo MR images were acquired from autumn-collected larvae at temperatures between 0°C and about -70°C and at spatial resolutions down to 27 µm. These images revealed three-dimensional (3D) larval anatomy at a level of detail currently not in reach of other in vivo techniques. Furthermore, they allowed visualization of the 3D distribution of the remaining liquid water and of the endogenous cryoprotectants at subzero temperatures, and temperature-weighted images of these distributions could be derived. Finally, individual fat body cells and their nuclei could be identified in intact frozen Eurosta larvae. Conclusions These findings suggest that high resolution MR techniques provide for interesting methodological options in comparative cryobiological investigations, especially in vivo

2021 Update for the Diagnosis and Management of Acute Coronary Syndromes for the Perioperative Clinician

In this review, recent key publications related to acute coronary syndrome (ACS) are summarized and placed into context of contemporary practice. Landmark trials examining vascular access in ST-elevation myocardial infarction, the management of multivessel disease, acute myocardial infarction and cardiac arrest are discussed. An update in pharmacology for ACS provides updates in major trials relating to P2Y12 inhibitor initiation, deescalation, and use in special populations. Additional updates in the use of lipid-lowering agents and adjunctive medications in ACS are reviewed. Finally, cardiac pathology related to coronavirus disease 2019 (COVID-19), as well as the impact of the COVID-19 global pandemic on the care of patients with ACS, is summarized

Intrinsic EPR in La2-xSrxCuO4: Manifestation of three-spin polarons

Electron-paramagnetic resonance (EPR) measurements on La2-xSrxCuO4provide experimental evidence of a three-spin polaren, consisting of two Cu2+ ions and one p hole. The symmetry properties and the peculiar temperature dependence of the g values of the EPR line indicate the presence of dynamical Jahn-Teller distortions and formation of a collective mode of polarons and surrounding strongly correlated Cu ions (bottlenecked regime)

Intrinsic EPR in La2-xSrxCuO4: Manifestation of three-spin polarons

Electron-paramagnetic resonance (EPR) measurements on La2-xSrxCuO4provide experimental evidence of a three-spin polaren, consisting of two Cu2+ ions and one p hole. The symmetry properties and the peculiar temperature dependence of the g values of the EPR line indicate the presence of dynamical Jahn-Teller distortions and formation of a collective mode of polarons and surrounding strongly correlated Cu ions (bottlenecked regime)

Intrinsic EPR in La2-xSrxCuO4: Manifestation of three-spin polarons

Electron-paramagnetic resonance (EPR) measurements on La2-xSrxCuO4provide experimental evidence of a three-spin polaren, consisting of two Cu2+ ions and one p hole. The symmetry properties and the peculiar temperature dependence of the g values of the EPR line indicate the presence of dynamical Jahn-Teller distortions and formation of a collective mode of polarons and surrounding strongly correlated Cu ions (bottlenecked regime)