484 research outputs found
Coherent Control of Quantum Dynamics with Sequences of Unitary Phase-Kick Pulses
Coherent optical control schemes exploit the coherence of laser pulses to
change the phases of interfering dynamical pathways in order to manipulate
dynamical processes. These active control methods are closely related to
dynamical decoupling techniques, popularized in the field of Quantum
Information. Inspired by Nuclear Magnetic Resonance (NMR) spectroscopy,
dynamical decoupling methods apply sequences of unitary operations to modify
the interference phenomena responsible for the system dynamics thus also
belonging to the general class of coherent control techniques. Here we review
related developments in the fields of coherent optical control and dynamical
decoupling, with emphasis on control of tunneling and decoherence in general
model systems. Considering recent experimental breakthroughs in the
demonstration of active control of a variety of systems, we anticipate that the
reviewed coherent control scenarios and dynamical decoupling methods should
raise significant experimental interest.Comment: 52 pages, 7 figure
Tamoxifen-associated vasculitis in a breast cancer patient
BACKGROUND: Estrogen plays a critical role in breast cancer. Thereafter, endocrine therapy is a standard of care in patients with breast carcinoma, expressing ER or PR. CASE PRESENTATION: Herein we report the case of a 53-year old patient, who developed cholestasis and vasculitis during the treatment with tamoxifen. This toxicity was reversable after the removal of the drug. Thereafter she continued adjuvant treatment for breast carcinoma with anastrazole. Since tamoxifen has been widely indicated for patients with breast carcinoma, we did a literature review, looking for other cases with this type of toxicity. CONCLUSION: This case is the third with vasculitis informed in the literature, but the first one that additionally developed cholestasis and arthritis. Although it is rare, we discuss the indication of this drug in the actual era, where aromatase inhibitors offer a better security profile
Spatial and temporal distribution of fishing resources exploited by the Manaus fishing fleet, Amazonas, Brazil
Protective effect of simvastatin in the cyclophosphamide-induced hemohrragic cystitis in rats
Importance of biopsies and histological evaluation in patients with chronic diarrhea and normal colonoscopies
Perioperative care in an animal model for training in abdominal surgery: is it necessary a preoperative fasting?
Influence of glutamine on morphological and functional changes of liver in the presence of extrahepatic biliary obstruction in rats
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