Universal three-body recombination and Efimov resonances in an ultracold Li-Cs mixture

We study Efimov resonances via three-body loss in an ultracold two-component gas of fermionic $^6$Li and bosonic $^{133}$Cs atoms close to a Feshbach resonance at 843~G, extending results reported previously [Pires \textit{et al.}, Phys. Rev. Lett. 112, 250404 (2014)] to temperatures around 120~nK. The experimental scheme for reaching lower temperatures is based upon compensating the gravity-induced spatial separation of the mass-imbalanced gases with bichromatic optical dipole traps. We observe the first and second excited Li-Cs-Cs Efimov resonance in the magnetic field dependence of the three-body event rate constant, in good agreement with the universal zero-range theory at finite temperature [Petrov and Werner, Phys. Rev. A 92, 022704 (2015)]. Deviations are found for the Efimov ground state, and the inelasticity parameter $\eta$ is found to be significantly larger than those for single-species systems

Recurrent focal myositis: a rare inflammatory myopathy

Focal myositis is an acute and localized muscle inflammation of unknown aetiology. The clinical diagnosis is often difficult to obtain, since it can be confused with infections, vascular thrombosis or muscle tumours such as sarcomas. This leads to a significant delay in the diagnosis, resulting in the administration of inappropriate and potentially harmful treatments. We report here a case of recurrent focal myositis in a woman where the diagnosis was only obtained after 6 years, despite multiple hospital admissions. This case reinforces the importance of clinical knowledge and experience to tackle challenging medical scenario

Vortices in the presence of a nonmagnetic atom impurity in 2D XY ferromagnets

Using a model of nonmagnetic impurity potential, we have examined the behavior of planar vortex solutions in the classical two-dimensional XY ferromagnets in the presence of a spin vacancy localized out of the vortex core. Our results show that a spinless atom impurity gives rise to an effective potential that repels the vortex structure.Comment: 6 pages, 2 figures, RevTex

Sistemas silvipastoris: impactos sobre o conforto animal.

bitstream/item/89813/1/BOP-30-Sist-Silv.pd

Novel sources of Flavor Changed Neutral Currents in the 331RHN331_{RHN} model

Sources of Flavor Changed Neutral Currents (FCNC) naturally emerge from a well motivated framework called 3-3-1 with right-handed neutrinos model, $331_{RHN}$ for short, mediated by an extra neutral gauge boson $Z^{\prime}$. Following previous works we calculate these sources and in addition we derive new ones coming from CP-even and -odd neutral scalars which appear due to their non-diagonal interactions with the physical standard quarks. Furthermore we show that bounds related to the neutral mesons systems $K_L-K_S$ and $D_1^0 - D_2^0$ may be significantly strengthened in the presence of these new interactions allowing us to infer stronger constraints on the parameter space of the model.Comment: Published version. 10 pages, 6 figure

The use of quantitative Real-Time PCR to estimate Salmonella shed in fecal samples from naturally infected finishing pigs

The objective of this study was to describe the shedding pattern of Salmonella in finishing pigs, as well to quantify the Salmonella load. A longitudinal study was conducted in 12 cohorts of pigs in a multi-site farrow-to-finish production system. At the beginning of each cohort, 50 pigs (10 ± 2 weeks old) were randomly selected and individually identified. Individual pig fecal samples were collected and cultured every 2 weeks for 16 weeks (8 collections)

Short carbohydrate amphiphiles as smart therapeutics targeting cancer

Biocatalytic self-assembly (BSA) emerged as selective and effective approach for cancer therapy. BSA makes use of enzyme-sensitive moiety that is incorporated in an amphiphilic molecule (usually peptide amphiphile, PA). This unit is transfomred/removed upon enzymatic action causing rebalance of the moleculeâ s amphiphilicity and self-assembling ability. Among different enzymes, phosphatases (e.g. alkaline phosphatase, ALP) are the best studied ones for BSA targeting cancer. Recently, we describe a simple carbohydrate amphiphile (CA) as an alternative of PA and demonstrated its potential for treatment of osteosarcoma using BSA. Herein, we discuss another advantage of CAs in cancer therapy: they can act as antagonists of the glucose transporters (GLUTs) due to their structural similarity with glucose. Cancer cells have an accelerated metabolism, which requires high consumption of glucose. As a result, they overexpressed GLUTs, particularly GLUT1 and GLUT3. We studied several cancer cell lines overexpressing GLUTs and demonstrate that indeed the presence of CAs alter the glucose transport: a competitive assay showed that CAs reduced significantly the uptake of glucose, suggesting a possible blocking of GLUTs and glycolysis. Cancer cells cultured in the presence of CAs also showed a decrease in cell proliferation, metabolic activity and activation of an apoptotic pathway, that ultimately led to cell death. We conclude that the selective apoptosis of cancer cells is based on two synergistic mechanisms: formation of pericellular net that traps selectively the phosphatase overexpressing cells and blockage of glucose transport in these cells.info:eu-repo/semantics/publishedVersio