33 research outputs found

    Treatment of Recurrent Primary Cutaneous Mucinous Carcinoma of the Eyelid with Modified Wide Local Excision

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    Primary cutaneous mucinous carcinoma (PCMC) is a rare, low-grade malignant neoplasm of the sweat gland, whose history has been controversial regarding eccrine versus apocrine origin. This case report describes a 53-year-old male who presented to the University of Florida, Gainesville, ophthalmology clinic and was referred to the oculoplastics service with a painless, subcentimeter mass on the lateral right upper eyelid including the canthus, consistent with recurrent primary cutaneous mucinous carcinoma of the eyelid. Four years prior, the patient had undergone excisional biopsy of the lesion in a clinic, which revealed residual tumor, but the patient deferred further surgery at the time. The patient underwent surgical excision of the mass with reconstruction without operative complications and with negative surgical margins. PCMC is difficult to diagnose clinically due to its rarity and requires a histopathological examination for confirmation of the diagnosis. This report presents the first case in the literature of primary cutaneous mucinous carcinoma in a patient with human immunodeficiency virus (HIV). With this case report, we aim to raise awareness of primary cutaneous mucinous carcinoma as a potential part of the differential diagnosis for malignant eyelid lesions, including those present in patients with HIV

    Heterogeneity in Price Responsiveness for Residential Space Heating in Germany

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    Space heating and hot water expenditures make up the majority of household energy demand in Germany, at 83.2%, making them an attractive target for energy policies. Using a panel dataset derived from yearly residential household surveys covering the years 1996 to 2014, we identify the determinants of heating expenditures for German households. We discover significant heterogeneity in expenditures depending on socioeconomic variables. For the full sample, we find a price elasticity of heating expenditures of 0.629. Elasticities vary significantly between individual groups, with values ranging from 0.523 to 0.716. Furthermore, a large number of technical and socio-demographic factors are significant in determining energy use. Our findings have implications for evaluating the effectiveness of policy measures that aim at influencing energy use across different groups of consumers

    Predation or Self-Defense? Endogenous Competition and Financial Distress

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    Measurement of CP asymmetries in D(s)+ηπ+ {D}_{(s)}^{+}\to \eta {\pi}^{+} and D(s)+ηπ+ {D}_{(s)}^{+}\to {\eta}^{\prime }{\pi}^{+} decays

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    Searches for CP violation in the decays D(s)+ηπ+ {D}_{(s)}^{+}\to \eta {\pi}^{+} and D(s)+ηπ+ {D}_{(s)}^{+}\to {\eta}^{\prime }{\pi}^{+} are performed using pp collision data corresponding to 6 fb1^{−1} of integrated luminosity collected by the LHCb experiment. The calibration channels D(s)+ϕπ+ {D}_{(s)}^{+}\to \phi {\pi}^{+} are used to remove production and detection asymmetries. The resulting CP-violating asymmetries areACP=(D+ηπ+)=(0.34±0.66±0.16±0.05)%,ACP=(Ds+ηπ+)=(0.32±0.51±0.12)%,ACP=(D+ηπ+)=(0.49±0.18±0.06±0.05)%,ACP=(Ds+ηπ+)=(0.01±0.12±0.08)%, {\displaystyle \begin{array}{l}{\mathcal{A}}^{CP}=\left({D}^{+}\to \eta {\pi}^{+}\right)=\left(0.34\pm 0.66\pm 0.16\pm 0.05\right)\%,\\ {}{\mathcal{A}}^{CP}=\left({D}_s^{+}\to \eta {\pi}^{+}\right)=\left(0.32\pm 0.51\pm 0.12\right)\%,\\ {}\begin{array}{l}{\mathcal{A}}^{CP}=\left({D}^{+}\to {\eta}^{\prime }{\pi}^{+}\right)=\left(0.49\pm 0.18\pm 0.06\pm 0.05\right)\%,\\ {}{\mathcal{A}}^{CP}=\left({D}_s^{+}\to {\eta}^{\prime }{\pi}^{+}\right)=\left(0.01\pm 0.12\pm 0.08\right)\%,\end{array}\end{array}} where the first uncertainty is statistical, the second is systematic and the third, relevant for the D+^{+} channels, is due to the uncertainty on ACP=(D+ϕπ+) {\mathcal{A}}^{CP}=\left({D}^{+}\to \phi {\pi}^{+}\right) . These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of CP violation. A combination of these results with previous LHCb measurements is presented.[graphic not available: see fulltext]Searches for CPCP violation in the decays D(s)+ηπ+D^+_{(s)}\rightarrow \eta \pi^+ and D(s)+ηπ+D^+_{(s)}\rightarrow \eta^{\prime} \pi^+ are performed using pppp collision data corresponding to 6 fb1^{-1} of integrated luminosity collected by the LHCb experiment. The calibration channels D(s)+ϕπ+D^+_{(s)}\rightarrow \phi \pi^+ are used to remove production and detection asymmetries. The resulting CPCP-violating asymmetries are ACP(D+ηπ+)=(0.34±0.66±0.16±0.05)%A^{CP}(D^+ \rightarrow \eta \pi^+) = (0.34 \pm 0.66 \pm 0.16 \pm 0.05)\%, ACP(Ds+ηπ+)=(0.32±0.51±0.12)%A^{CP}(D^+_s \rightarrow \eta \pi^+) = (0.32 \pm 0.51 \pm 0.12)\%, ACP(D+ηπ+)=(0.49±0.18±0.06±0.05)%A^{CP}(D^+ \rightarrow \eta^{\prime} \pi^+) = (0.49 \pm 0.18 \pm 0.06 \pm 0.05)\%, ACP(Ds+ηπ+)=(0.01±0.12±0.08)%A^{CP}(D^+_s \rightarrow \eta^{\prime} \pi^+) = (0.01 \pm 0.12 \pm 0.08)\%, where the first uncertainty is statistical, the second is systematic and the third, relevant for the D+D^+ channels, is due to the uncertainty on ACP(D+ϕπ+)A^{CP}(D^+ \to \phi \pi^+). These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of CPCP violation. A combination of these results with previous LHCb measurements is presented

    Search for the rare hadronic decay Bs0ppˉB_s^0\to p \bar{p}

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    A search for the rare hadronic decay Bs0→pp¯ is performed using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6  fb-1. No evidence of the decay is found and an upper limit on its branching fraction is set at B(Bs0→pp¯)&lt;4.4(5.1)×10-9 at 90% (95%) confidence level; this is currently the world’s best upper limit. The decay mode B0→pp¯ is measured with very large significance, confirming the first observation by the LHCb experiment in 2017. The branching fraction is determined to be B(B0→pp¯)=(1.27±0.15±0.05±0.04)×10-8, where the first uncertainty is statistical, the second is systematic and the third is due to the external branching fraction of the normalization channel B0→K+π-. The combination of the two LHCb measurements of the B0→pp¯ branching fraction yields B(B0→pp¯)=(1.27±0.13±0.05±0.03)×10-8.A search for the rare hadronic decay Bs0ppˉB_s^0\to p \bar{p} is performed using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb1^{-1}. No evidence of the decay is found and an upper limit on its branching fraction is set at B(Bs0ppˉ)<4.4 (5.1)×109{\cal B}(B_s^0\to p \bar{p}) < 4.4~(5.1) \times 10^{-9} at 90% (95%) confidence level; this is currently the world's best upper limit. The decay mode B0ppˉB^0\to p \bar{p} is measured with very large significance, confirming the first observation by the LHCb experiment in 2017. The branching fraction is determined to be B(B0ppˉ)=(1.27±0.15±0.05±0.04)×108{\cal B}(B^0\to p \bar{p}) = \rm (1.27 \pm 0.15 \pm 0.05 \pm 0.04) \times 10^{-8}, where the first uncertainty is statistical, the second is systematic and the third is due to the external branching fraction of the normalization channel B0K+πB^0\to K^+\pi^-. The combination of the two LHCb measurements of the B0ppˉB^0\to p \bar{p} branching fraction yields B(B0ppˉ)=(1.27±0.13±0.05±0.03)×108{\cal B}(B^0\to p \bar{p}) = \rm (1.27 \pm 0.13 \pm 0.05 \pm 0.03) \times 10^{-8}

    Observation of sizeable ω\omega contribution to χc1(3872)π+πJ/ψ\chi_{c1}(3872) \to \pi^+\pi^- J/\psi decays

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    Resonant structures in the dipion mass spectrum from χc1(3872)π+πJ/ψ\chi_{c1}(3872)\to\pi^+\pi^- J/\psi decays, produced via B+K+χc1(3872)B^+\to K^+\chi_{c1}(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb1^{-1}. A sizeable contribution from the isospin conserving χc1(3872)ωJ/ψ\chi_{c1}(3872)\to\omega J/\psi decay is established for the first time, (21.4±2.3±2.0)%(21.4\pm2.3\pm2.0)\%, with a significance of more than 7.1σ7.1\sigma. The amplitude of isospin violating decay, χc1(3872)ρ0J/ψ\chi_{c1}(3872)\to\rho^0 J/\psi, relative to isospin conserving decay, χc1(3872)ωJ/ψ\chi_{c1}(3872)\to\omega J/\psi, is properly determined, and it is a factor of six larger than expected for a pure charmonium state.Resonant structures in the dipion mass spectrum from χc1(3872)→π+π-J/ψ decays, produced via B+→K+χc1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9  fb-1. A sizeable contribution from the isospin conserving χc1(3872)→ωJ/ψ decay is established for the first time, (21.4±2.3±2.0)%, with a significance of more than 7.1σ. The amplitude of isospin violating decay, χc1(3872)→ρ0J/ψ, relative to isospin conserving decay, χc1(3872)→ωJ/ψ, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.Resonant structures in the dipion mass spectrum from χc1(3872)π+πJ/ψ\chi_{c1}(3872)\to\pi^+\pi^- J/\psi decays, produced via B+K+χc1(3872)B^+\to K^+\chi_{c1}(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb1fb^{-1}. A sizeable contribution from the isospin conserving χc1(3872)ωJ/ψ\chi_{c1}(3872)\to\omega J/\psi decay is established for the first time, (21.4±2.3±2.0)%(21.4\pm2.3\pm2.0)\%, with a significance of more than 7.1σ7.1\sigma. The amplitude of isospin violating decay, χc1(3872)ρ0J/ψ\chi_{c1}(3872)\to\rho^0 J/\psi, relative to isospin conserving decay, χc1(3872)ωJ/ψ\chi_{c1}(3872)\to\omega J/\psi, is properly determined, and it is a factor of six larger than expected for a pure charmonium state
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