1,289 research outputs found

    Status Report on Integrated Water Resources Management and Water Efficiency Plan: Prepared for the 16th session of the Commission on Sustainable Development

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    This report shows the progress made on meeting the target to "develop integrated water resources management and water efficiency plans by 2005, with support to developing countries, through actions at all levels" agreed upon at the World Summit on Sustainable Development (WSSD) in Johannesburg in 2002, through the Johannesburg Plan of Implementation (JPol). The report is based on a survey covering 104 countries, of which 77 are developing or countries in transition and 27 are developed (OECD and EU member states). The report also includes information gathered by the more informal surveys conducted earlier by the Global Water Partnership and the African Development Bank

    An FeLoBAL Binary Quasar

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    In an ongoing infrared imaging survey of quasars at Keck Observatory, we have discovered that the z=1.285 quasar SDSS J233646.2-010732.6 comprises two point sources with a separation of 1.67". Resolved spectra show that one component is a standard quasar with a blue continuum and broad emission lines; the other is a broad absorption line (BAL) quasar, specifically, a BAL QSO with prominent absorption from MgII and metastable FeII, making it a member of the ``FeLoBAL'' class. The number of known FeLoBALs has recently grown dramatically from a single example to more than a dozen, including a gravitationally lensed example and the binary member presented here, suggesting that this formerly rare object may be fairly common. Additionally, the presence of this BAL quasar in a relatively small separation binary adds to the growing evidence that the BAL phenomenon is not due to viewing a normal quasar at a specific orientation, but rather that it is an evolutionary phase in the life of many, if not all, quasars, and is particularly associated with conditions found in interacting systems.Comment: AASTEX 13 pp., 4 figs; accepted by ApJ Letter

    Complications and functional outcomes after total hip arthroplasty and total knee arthroplasty: results from the Global Orthopaedic Registry (GLORY)

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    The Global Orthopaedic Registry (GLORY) has been designed to monitor a broad range of complications and outcomes that occur following total hip arthroplasty (THA) and total knee arthroplasty (TKA). GLORY provides global \u27real-world\u27 data, in contrast to the data generated by the controlled conditions of clinical trials. The results to date show an overall incidence of both in-hospital and post-discharge complications of approximately 7% in THA patients and 8% in TKA patients. The most common in-hospital complications in THA patients are fractures (0.6%) and deep-vein thrombosis (DVT) (0.6%), whereas in TKA patients DVT (1.4%) and cardiac events (0.8%) are most common. The most common post-discharge complications in both THA and TKA patients are reoperation due to bleeding, wound necrosis, wound infection, or other causes; and DVT. Bleeding complications were less common than other adverse events in both groups (in-hospital rates of 0.48% and 0.83%, respectively). Functional outcomes improved after surgery in both groups, as expected. Younger patients and patients who had been discharged directly to their homes seemed to have the greatest improvement in functional outcome after surgery

    Winds as the origin of radio emission in z=2.5z=2.5 radio-quiet extremely red quasars

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    Most active galactic nuclei (AGNs) are radio-quiet, and the origin of their radio emission is not well-understood. One hypothesis is that this radio emission is a by-product of quasar-driven winds. In this paper, we present the radio properties of 108 extremely red quasars (ERQs) at z=2−4z=2-4. ERQs are among the most luminous quasars (Lbol∼1047−48L_{bol} \sim 10^{47-48} erg/s) in the Universe, with signatures of extreme (≫1000\gg 1000 km/s) outflows in their [OIII]λ\lambda5007 \AA\ emission, making them the best subjects to seek the connection between radio and outflow activity. All ERQs but one are unresolved in the radio on ∼10\sim 10 kpc scales, and the median radio luminosity of ERQs is νLν[6 GHz]=1041.0\nu L_\nu [{\rm 6\,GHz}] = 10^{41.0} erg/s, in the radio-quiet regime, but one to two orders of magnitude higher than that of other quasar samples. The radio spectra are steep, with a mean spectral index ⟨α⟩=−1.0\langle \alpha \rangle = -1.0. In addition, ERQs neatly follow the extrapolation of the low-redshift correlation between radio luminosity and the velocity dispersion of [OIII]-emitting ionized gas. Uncollimated winds, with a power of one per cent of the bolometric luminosity, can account for all these observations. Such winds would interact with and shock the gas around the quasar and in the host galaxy, resulting in acceleration of relativistic particles and the consequent synchrotron emission observed in the radio. Our observations support the picture in which ERQs are signposts of extremely powerful episodes of quasar feedback, and quasar-driven winds as a contributor of the radio emission in the intermediate regime of radio luminosity νLν=1039−1042\nu L_\nu = 10^{39}-10^{42} erg/s.Comment: accepted by MNRA

    Lessons learned from the global orthopaedic registry: study design, current practice patterns, and future directions

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    The previous articles in this supplement have recounted, in detail, a number of the findings of the Global Orthopaedic Registry (GLORY) and placed them within the context of current knowl-edge regarding anticoagulation in patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA). Furthermore, because of the multinational nature of GLORY, we have been able to provide a preliminary view of some of the geographical differences in orthopedic practices that occur
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