Catalogue of Wave Energy Test Centres

The objective of this catalogue is to provide an overview of the development of wave energy projects across Europe. This is framed within the context of the need to address climate change and concerns over security of oil and gas supplies. Both of these have driven European policy-makers to develop and implement a European energy policy. The European Commission has set ambitious targets for all Member States through a Directive promoting the use of energy from renewable sources (2009/28/EC), taken forward at Member State level through a National Renewable Energy Action Plan (NREAP). Many coastal European States have recognised that marine renewable energy developments will play a key role in meeting their targets. This document presents the targets set by each State in their NREAP and specifically identifies the level of ocean energy (tidal or wave) that would be required to meet those targets. Offshore wind is included for comparative purposes. The NREAP targets are supplemented by ocean energy objectives garnered from various other strategies and roadmaps. This report also addressed the future potential spatial footprint of wave energy developments. The targets set in the NREAPs and other documented scenarios are used to calculate the potential number and spatial extent of wave energy farms required, based on the current state of the technology and operational experience. These predictions will provide an essential contribution to future Maritime Spatial Planning (MSP) systems in EU Member States. The final data section gives an overview of the wave energy development situation in Europe as of early 2011, summarising the wave energy projects that have been tested in the sea to date, those that are currently operational and those that are in the planning stage. These projects range from demonstration type projects to examples of where full-scale devices have been deployed or are planned for deployment in the near future. Information presented relates primarily to the physical characteristics of the site and the technology type in place. The catalogue concludes with a summary of the main findings from the above work. The document is accompanied by an Annex, with information on devices that have been tested in the sea since 1999, those that are currently operational and those that are in the planning stage. The data contained in the catalogue will act as the foundation for many of the SOWFIA Project‟s deliverables. Most imminently, an inventory of all available environmental impact data collected, or in the process of collection, at each of the wave energy test centres listed here will be developed. This catalogue therefore provides a snapshot of the state of the wave energy industry in Europe and its predicted development in the coming decade. It forms a baseline for understanding the developments needed in technology, policy, funding and monitoring. This is essential if the required European-wide device development and testing programmes, technical support infrastructure, and streamlined consenting and permitting regimes are to be developed to facilitate the growth of this industry. Throughout these processes, social, environmental and economic impacts must be considered. The report has four aims: to document the various targets set by coastal Member States for ocean energy; to determine the spatial requirements for these; to provide a methodology for progressing the technology; and to outline the devices that have been tested in the sea since 1999 and those that are in the planning stage.Inteligent Energy Europe Programme of the European Unio

Risk Factors Associated with Adverse Fetal Outcomes in Pregnancies Affected by Coronavirus Disease 2019 (COVID-19): A Secondary Analysis of the WAPM study on COVID-19

To evaluate the strength of association between maternal and pregnancy characteristics and the risk of adverse perinatal outcomes in pregnancies with laboratory confirmed COVID-19. Secondary analysis of a multinational, cohort study on all consecutive pregnant women with laboratory-confirmed COVID-19 from February 1, 2020 to April 30, 2020 from 73 centers from 22 different countries. A confirmed case of COVID-19 was defined as a positive result on real-time reverse-transcriptase-polymerase-chain-reaction (RT-PCR) assay of nasal and pharyngeal swab specimens. The primary outcome was a composite adverse fetal outcome, defined as the presence of either abortion (pregnancy loss before 22 weeks of gestations), stillbirth (intrauterine fetal death after 22 weeks of gestation), neonatal death (death of a live-born infant within the first 28 days of life), and perinatal death (either stillbirth or neonatal death). Logistic regression analysis was performed to evaluate parameters independently associated with the primary outcome. Logistic regression was reported as odds ratio (OR) with 95% confidence interval (CI). Mean gestational age at diagnosis was 30.6\ub19.5 weeks, with 8.0% of women being diagnosed in the first, 22.2% in the second and 69.8% in the third trimester of pregnancy. There were six miscarriage (2.3%), six intrauterine device (IUD) (2.3) and 5 (2.0%) neonatal deaths, with an overall rate of perinatal death of 4.2% (11/265), thus resulting into 17 cases experiencing and 226 not experiencing composite adverse fetal outcome. Neither stillbirths nor neonatal deaths had congenital anomalies found at antenatal or postnatal evaluation. Furthermore, none of the cases experiencing IUD had signs of impending demise at arterial or venous Doppler. Neonatal deaths were all considered as prematurity-related adverse events. Of the 250 live-born neonates, one (0.4%) was found positive at RT-PCR pharyngeal swabs performed after delivery. The mother was tested positive during the third trimester of pregnancy. The newborn was asymptomatic and had negative RT-PCR test after 14 days of life. At logistic regression analysis, gestational age at diagnosis (OR: 0.85, 95% CI 0.8-0.9 per week increase; p<0.001), birthweight (OR: 1.17, 95% CI 1.09-1.12.7 per 100 g decrease; p=0.012) and maternal ventilatory support, including either need for oxygen or CPAP (OR: 4.12, 95% CI 2.3-7.9; p=0.001) were independently associated with composite adverse fetal outcome. Early gestational age at infection, maternal ventilatory supports and low birthweight are the main determinants of adverse perinatal outcomes in fetuses with maternal COVID-19 infection. Conversely, the risk of vertical transmission seems negligible

Amplitude analysis of B0→D‾0Ds+π−B^0 \rightarrow \overline{D}^0 D_s^+ \pi^- and B+→D−Ds+π+B^+ \rightarrow D^- D_s^+ \pi^+ decays

Resonant contributions in $B^0 \rightarrow \overline{D}^0 D^+_s\pi^-$ and $B^+\rightarrow D^- D^+_s\pi^+$ decays are determined with an amplitude analysis, which is performed both separately and simultaneously, where in the latter case isospin symmetry between the decays is assumed. The analysis is based on data collected by the LHCb detector in proton-proton collisions at center-of-mass energies of 7, 8 and 13 $\rm{TeV}$. The full data sample corresponds to an integrated luminosity of 9 $\rm fb^{-1}$. A doubly charged spin-0 open-charm tetraquark candidate together with a neutral partner, both with masses near $2.9\,\rm{GeV}$, are observed in the $D_s\pi$ decay channel.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-027.html (LHCb public pages

First observation of the B+→Ds+Ds−K+B^+ \rightarrow D_s^+ D_s^- K^+ decay

The $B^+ \rightarrow D_s^+ D_s^- K^+$ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at centre-of-mass energies of $7$, $8$ and $13\, \text{TeV}$, corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$. Its branching fraction relative to that of the $B^{+} \rightarrow D^{+} D^{-} K^{+}$ decay is measured to be $$\frac{B\left(B^{+} \rightarrow D_s^{+} D_s^{-} K^{+}\right)}{B\left(B^{+} \rightarrow D^{+} D^{-} K^{+}\right)}=0.525 \pm 0.033 \pm 0.027 \pm 0.034,$$ where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the $D_s^{\pm} \rightarrow K^{\mp} K^{\pm} \pi^{\pm}$ and $D^{\pm} \rightarrow K^{\mp} \pi^{\pm} \pi^{\pm}$ decays. This measurement fills an experimental gap in the knowledge of the family of Cabibbo$-$favoured $\bar{b} \rightarrow \bar{c} c \bar{s}$ transitions and opens the path for unique studies of spectroscopy in future.Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-019.html (LHCb public pages

Study of the B− → Λc+Λ¯c−K− decay

The decay B − → Λ + c ¯ Λ − c K − is studied in proton-proton collisions at a center-of-mass energy of √ s = 13     TeV using data corresponding to an integrated luminosity of 5     fb − 1 collected by the LHCb experiment. In the Λ + c K − system, the Ξ c ( 2930 ) 0 state observed at the BABAR and Belle experiments is resolved into two narrower states, Ξ c ( 2923 ) 0 and Ξ c ( 2939 ) 0 , whose masses and widths are measured to be m ( Ξ c ( 2923 ) 0 ) = 2924.5 ± 0.4 ± 1.1     MeV , m ( Ξ c ( 2939 ) 0 ) = 2938.5 ± 0.9 ± 2.3     MeV , Γ ( Ξ c ( 2923 ) 0 ) = 4.8 ± 0.9 ± 1.5     MeV , Γ ( Ξ c ( 2939 ) 0 ) = 11.0 ± 1.9 ± 7.5     MeV , where the first uncertainties are statistical and the second systematic. The results are consistent with a previous LHCb measurement using a prompt Λ + c K − sample. Evidence of a new Ξ c ( 2880 ) 0 state is found with a local significance of 3.8 σ , whose mass and width are measured to be 2881.8 ± 3.1 ± 8.5     MeV and 12.4 ± 5.3 ± 5.8     MeV , respectively. In addition, evidence of a new decay mode Ξ c ( 2790 ) 0 → Λ + c K − is found with a significance of 3.7 σ . The relative branching fraction of B − → Λ + c ¯ Λ − c K − with respect to the B − → D + D − K − decay is measured to be 2.36 ± 0.11 ± 0.22 ± 0.25 , where the first uncertainty is statistical, the second systematic and the third originates from the branching fractions of charm hadron decays

Direct CP violation in charmless three-body decays of B± mesons

Measurements of C P asymmetries in charmless three-body decays of B ± mesons are reported using proton-proton collision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.9     fb − 1 . The previously observed C P asymmetry in B ± → π ± K + K − decays is confirmed, and C P asymmetries are observed with a significance of more than five standard deviations in the B ± → π ± π + π − and B ± → K ± K + K − decays, while the C P asymmetry of B ± → K ± π + π − decays is confirmed to be compatible with zero. The distributions of these asymmetries are also studied as a function of the three-body phase space and suggest contributions from rescattering and resonance interference processes. An indication of the presence of the decays B ± → π ± χ c 0 ( 1 P ) in both B ± → π ± π + π − and B ± → π ± K + K − decays is observed, as is C P violation involving these amplitudes

Measurement of antiproton production from antihyperon decays in p He collisions at √sNN = 110 GeV

The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5TeV incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and 110GeV. The dominant antihyperon contribution, namely Λ¯→p¯π+ decays from promptly produced Λ¯ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models

Search for the lepton-flavour violating decays B0 → K*0τ±μ∓

A first search for the lepton-flavour violating decays B0 → K*0τ±μ∓ is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. No significant signal is observed, and upper limits on the branching fractions are determined to be BB0→K∗0τ+μ−&lt;1.01.2×10−5 and BB0→K∗0τ−μ+&lt;8.29.8×10−6 at the 90% (95%) confidence level