pinecone/core-2020-05-10-deduplication huggingface dataset:
Accretion dynamics of EX Lupi in quiescence: The star, the spot, and the accretion column

Astronomy and Astrophysics 580 (2015): A82 reproduced with permission from Astronomy & AstrophysicsContext. EX Lupi is a young, accreting M0 star and the prototype of EXor variable stars. Its spectrum is very rich in emission lines, including many metallic lines with narrow and broad components. The presence of a close companion has also been proposed, based on radial velocity signatures. Aims. We use the metallic emission lines to study the accretion structures and to test the companion hypothesis. Methods. We analyse 54 spectra obtained during five years of quiescence time. We study the line profile variability and the radial velocity of the narrow and broad metallic emission lines. We use the velocity signatures of different species with various excitation conditions and their time dependency to track the dynamics associated with accretion. Results. We observe periodic velocity variations in the broad and the narrow line components, consistent with rotational modulation. The modulation is stronger for lines with higher excitation potentials (e.g. He II), which are likely produced in a confined area very close to the accretion shock. Conclusions. We propose that the narrow line components are produced in the post-shock region, while the broad components originate in the more extended, pre-shock material in the accretion column. All the emission lines suffer velocity modulation due to the rotation of the star. The broad components are responsible for the line-dependent veiling observed in EX Lupi. We demonstrate that a rotationally modulated line-dependent veiling can explain the radial velocity signature of the photospheric absorption lines, making the close-in companion hypothesis unnecessary. The accretion structure is locked to the star and very stable during the five years of observations. Not all stars with similar spectral types and accretion rates show the same metallic emission lines, which could be related to differences in temperature and density in their accretion structure(s). The contamination of photospheric signatures by accretion-related processes can be turned into a very useful tool for determining the innermost details of the accretion channels in the proximity of the star. The presence of emission lines from very stable accretion columns will nevertheless be a very strong limitation for the detection of companions by radial velocity in young stars, given the similarity of the accretion-related signatures with those produced by a companionA.S.A. and M.F. acknowledge support from the Spanish “Proyectos de investigación no orientada” project number AYA2012-35008. A.K. is partly supported by the Momentum grant of the MTA CSTK Lendület Disk Research Group. P.Á. acknowledges support from the Hungarian Research Grant OTKA 10139
Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the qq̄ℓ+ℓ- final state

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMResults are presented from a search for a narrow, spin-2 resonance decaying into a pair of Z bosons, with one Z-boson decaying into leptons (e+e− or μ+μ−) and the other into jets. An example of such a resonance is the Kaluza–Klein graviton, GKK, predicted in Randall–Sundrum models. The analysis is based on a 4.9 fb−1 sample of proton–proton collisions at a center-of-mass energy of 7 TeV, collected with the CMS detector at the LHC. Kinematic and topological properties including decay angular distributions are used to discriminate between signal and background. No evidence for a resonance is observed, and upper limits on the production cross sections times branching fractions are set. In two models that predict Z-boson spin correlations in graviton decays, graviton masses are excluded lower than a value which varies between 610 and 945 GeV, depending on the model and the strength of the graviton couplingsWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MON, RosAtom, RAS and RFBR (Russia); MSTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie programme and the European Research Council (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Austrian Science Fund (FWF); the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Council of Science and Industrial Research, India; the Compagnia di San Paolo (Torino); and the HOMING PLUS programme of Foundation for Polish Science, cofinanced from European Union, Regional Development Fun
The Smc5/6 complex : the mysterious guardian of genome stability

An intricate network of proteins ensures the faithful transmission of genetic information through cell generations. The Structural Maintenance of Chromosomes (SMC) protein complex family plays a pivotal role in maintaining genome stability. Initially, the three eukaryotic SMC complexes, cohesin, condensin and Smc5/6 complex (Smc5/6) were identified for their functions in chromosome cohesion, condensation and recombination. Later, it was shown that SMC complexes also control replication and transcription. Another important group of proteins involved in the maintenance of genome stability are the topoisomerases. These enzymes control DNA topology to ensure faithful replication, transcription and chromosome segregation.



Defects in processes that control genome maintenance lead to cell death and chromosomal aberrations, including aneuploidy and translocations, which are hallmarks of cancer cells. Therefore, it is essential to reveal the details of how genome stability is maintained in order to fully comprehend the underlying causes of tumor development.



The aim of the projects described in this thesis was to increase the knowledge of Smc5/6, which is the least characterized of the three SMC complexes. Using the budding yeast Saccharomyces cerevisiae as model organism, our work shed light on the involvement of Smc5/6 in chromosome replication, segregation and, possibly, transcription. Moreover, in vitro analysis of purified Smc5/6 revealed new details of how the complex interacts with DNA.



In Paper I, it was demonstrated that Smc5/6 accumulates onto chromosomes after sister chromatids are tethered by cohesin. Smc5/6 is also shown to facilitate segregation of short entangled chromosomes. Our data suggest that the chromosomal association of Smc5/6 occurs at sites where sister chromatids are entangled, and that entanglement is proportional to the level of superhelical stress.



In Paper II, it was shown that Smc5/6 can both bind directly to, and topologically entrap DNA molecules in vitro. It was also demonstrated that Smc5/6 topologically entraps more than one DNA molecule at the time, stimulating their catenation by topoisomerase 2, which interacts with the complex.



In Paper III, it was shown that Smc5/6 is recruited to the intergenic region between two highly transcribed genes. This suggests that Smc5/6 accumulates in regions of high transcription-induced superhelical stress
Performance of jet substructure techniques for large-R jets in proton-proton collisions at √s=7 TeV using the ATLAS detector

This paper presents the application of a variety of techniques to study jet substructure. The performance of various modified jet algorithms, or jet grooming techniques, for several jet types and event topologies is investigated for jets with transverse momentum larger than 300 GeV. Properties of jets subjected to the mass-drop filtering, trimming, and pruning algorithms are found to have a reduced sensitivity to multiple proton-proton interactions, are more stable at high luminosity and improve the physics potential of searches for heavy boosted objects. Studies of the expected discrimination power of jet mass and jet substructure observables in searches for new physics are also presented. Event samples enriched in boosted W and Z bosons and top-quark pairs are used to study both the individual jet invariant mass scales and the efficacy of algorithms to tag boosted hadronic objects. The analyses presented use the full 2011 ATLAS dataset, corresponding to an integrated luminosity of 4.7 +/- 0.1 fb(-1) from proton-proton collisions produced by the Large Hadron Collider at a centre-of-mass energy of root s = 7 TeV
Resurgence of the dressing phase for ${\rm AdS}_5\times {\rm S}^5$

We discuss the resummation of the strong coupling asymptotic expansion of the
dressing phase of the ${\rm AdS}_5\times {\rm S}^5$ superstring. The dressing
phase proposed by Beisert, Eden and Staudacher can be recovered from a modified
Borel-Ecalle resummation of this asymptotic expansion only by completing it
with new, non-perturbative and exponentially suppressed terms that can be
organized into different sectors labelled by an instanton-like number. We
compute the contribution to the dressing phase coming from the sum over all the
instanton sectors and show that it satisfies the homogeneous crossing symmetry
equation. We comment on the semiclassical origin of the non-perturbative terms
from the world-sheet theory point of view even though their precise explanation
remains still quite mysterious.Comment: 53 pages, 5 figure
First study of the CP-violating phase and decay-width difference in
  $B_s^0\to\psi(2S)\phi$ decays

A time-dependent angular analysis of $B_s^0\to\psi(2S)\phi$ decays is
performed using data recorded by the LHCb experiment. The data set corresponds
to an integrated luminosity of 3.0\invfb collected during Run 1 of the LHC. The
CP-violating phase and decay-width difference of the $B_s^0$ system are
measured to be $\phi_s = 0.23^{+0.29}_{-0.28} \pm 0.02$ rad and $\Delta\Gamma_s
= 0.066^{+0.041}_{-0.044} \pm 0.007$ ps$^{-1}$, respectively, where the first
uncertainty is statistical and the second systematic. This is the first time
that $\phi_s$ and $\Delta\Gamma_s$ have been measured in a decay containing the
$\psi(2S)$ resonance.Comment: All figures and tables, along with any supplementary material and
  additional information, are available at
  https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-027.htm
An Alternate Path Integral for Quantum Gravity

We define a (semi-classical) path integral for gravity with Neumann boundary
conditions in $D$ dimensions, and show how to relate this new partition
function to the usual picture of Euclidean quantum gravity. We also write down
the action in ADM Hamiltonian formulation and use it to reproduce the entropy
of black holes and cosmological horizons. A comparison between the
(background-subtracted) covariant and Hamiltonian ways of semi-classically
evaluating this path integral in flat space reproduces the generalized Smarr
formula and the first law. This "Neumann ensemble" perspective on gravitational
thermodynamics is parallel to the canonical (Dirichlet) ensemble of
Gibbons-Hawking and the microcanonical approach of Brown-York.Comment: 29 pages, v3: references and a concluding speculative comment adde
Measurement of the production of high-$p_{\rm T}$ electrons from
  heavy-flavour hadron decays in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76
  TeV

Electrons from heavy-flavour hadron decays (charm and beauty) were measured
with the ALICE detector in Pb-Pb collisions at a centre-of-mass of energy
$\sqrt{s_{\rm NN}}=2.76$ TeV. The transverse momentum ($p_{\rm T}$)
differential production yields at mid-rapidity were used to calculate the
nuclear modification factor $R_{\rm AA}$ in the interval $3<p_{\rm T}< 18$
GeV/$c$. The $R_{\rm AA}$ shows a strong suppression compared to binary scaling
of pp collisions at the same energy (up to a factor of 4) in the 10% most
central Pb-Pb collisions. There is a centrality trend of suppression, and a
weaker suppression (down to a factor of 2) in semi-peripheral (50-80%)
collisions is observed. The suppression of electrons in this broad $p_{\rm T}$
interval indicates that both charm and beauty quarks lose energy when they
traverse the hot medium formed in Pb-Pb collisions at LHC.Comment: 28 pages, 7 captioned figures, 2 tables, authors from page 23,
  published version, figures at
  http://aliceinfo.cern.ch/ArtSubmission/node/316
Predictions for diphoton production at the LHC through NNLO in QCD.

In this paper we present a next-to-next-to-leading order (NNLO) calculation of the process pp → γγ that we have implemented into the parton level Monte Carlo code MCFM. We do not find agreement with the previous calculation of this process in the literature. In addition to the  O(α2s)O(αs2)  corrections present at NNLO, we include some effects arising at  O(α3s)O(αs3) , namely those associated with gluon-initiated closed fermion loops. We investigate the role of this process in the context of studies of QCD at colliders and as a background for searches for new physics, paying particular attention to the diphoton invariant mass spectrum. We demonstrate that the NNLO QCD prediction for the shape of this spectrum agrees well with functional forms used in recent data-driven fits
Investigation of Photoplethysmographic Signals in Human Visceral Organs

There is a need for reliable continuous monitoring of visceral organ oxygen saturation (SpO2). Splanchnic ischaemia may ultimately lead to cellular hypoxia and necrosis and may well contribute to the development of multiple organ failures and increased mortality. A new reflectance photoplethysmographic (PPG) probe and signal processing system were developed. PPG signals from abdominal organs (bowel, liver, and kidney) and the finger were obtained from 12 anaesthetised patients. The amplitudes of the abdominal organ PPGs were, on average, approximately the same as those obtained simultaneously from the finger. These observations suggest that pulse oximetry may be a valid monitoring technique for abdominal organs such as the bowel liver and kidney
First light of the VLT planet finder SPHERE IV :
                    Physical and chemical properties of the planets around HR8799

This is a pre-copyedited, author produced PDF of an article accepted for publication in Astronomy & Astrophysics following peer review. Subject to 12 month's embargo period. Embargo end date: 16 February 2017. The version of record [Bonnefoy, M., 'First light of the VLT planet finder SPHERE, IV. Physical and chemical properties of the planets around HR8799', A&A, 587, A58 (2016), first published online 16 February 2016] is available online at doi http://dx.doi.org/10.1051/0004-6361/201526906Context. The system of four planets discovered around the intermediate-mass star HR8799 offers a unique opportunity to test planet formation theories at large orbital radii and to probe the physics and chemistry at play in the atmospheres of self-luminous young (???30 Myr) planets. We recently obtained new photometry of the four planets and low-resolution (R???30) spectra of HR8799 d and e with the SPHERE instrument (paper III). Aims. In this paper (paper IV), we aim to use these spectra and available photometry to determine how they compare to known objects, what the planet physical properties are, and how their atmospheres work. Methods. We compare the available spectra, photometry, and spectral-energy distribution (SED) of the planets to field dwarfs and young companions. In addition, we use the extinction from corundum, silicate (enstatite and forsterite), or iron grains likely to form in the atmosphere of the planets to try to better understand empirically the peculiarity of their spectrophotometric properties. To conclude, we use three sets of atmospheric models (BT-SETTL14, Cloud-AE60, Exo-REM) to determine which ingredients are critically needed in the models to represent the SED of the objects, and to constrain their atmospheric parameters (T eff , log g, M/H). Results. We find that HR8799d and e properties are well reproduced by those of L6-L8 dusty dwarfs discovered in the field, among which some are candidate members of young nearby associations. No known object reproduces well the properties of planets b and c. Nevertheless, we find that the spectra and WISE photometry of peculiar and/or young early-T dwarfs reddened by submicron grains made of corundum, iron, enstatite, or forsterite successfully reproduce the SED of these planets. Our analysis confirms that only the Exo-REM models with thick clouds fit (within 2??) the whole set of spectrophotometric datapoints available for HR8799 d and e for T eff = 1200 K, log g in the range 3.0-4.5, and M/H=+0.5. The models still fail to reproduce the SED of HR8799c and b. The determination of the metallicity, log g, and cloud thickness are degenerate. Conclusions. Our empirical analysis and atmospheric modelling show that an enhanced content in dust and decreased CIA of H2 is certainly responsible for the deviation of the properties of the planet with respect to field dwarfs. The analysis suggests in addition that HR8799c and b have later spectral types than the two other planets, and therefore could both have lower masses
Randomized observation times for the compound Poisson risk model: The discounted penalty function

In the framework of collective risk theory, we consider a compound Poisson risk model for the surplus process where the process (and hence ruin) can only be observed at random observation times. For Erlang(n) distributed inter-observation times, explicit expressions for the discounted penalty function at ruin are derived. The resulting model contains both the usual continuous-time and the discrete-time risk model as limiting cases, and can be used as an effective approximation scheme for the latter. Numerical examples are given that illustrate the effect of random observation times on various ruin-related quantities
Search for long-lived neutral particles decaying into lepton jets in proton-proton collisions at √s = 8 TeV with the ATLAS detector

Several models of physics beyond the Standard Model predict neutral particles that decay into final states consisting of collimated jets of light leptons and hadrons (so-called “lepton jets”). These particles can also be long-lived with decay length comparable to, or even larger than, the LHC detectors’ linear dimensions. This paper presents the results of a search for lepton jets in proton-proton collisions at the centre-of-mass energy of √s = 8 TeV in a sample of 20.3 fb[superscript −1] collected during 2012 with the ATLAS detector at the LHC. Limits on models predicting Higgs boson decays to neutral long-lived lepton jets are derived as a function of the particle’s proper decay length.European Organization for Nuclear ResearchUnited States. Dept. of EnergyNational Science Foundation (U.S.)Brookhaven National Laborator
Cost-effectiveness of store-and-forward teledermatology: A systematic review

Importance: Teledermatology is a topical clinical approach being trialled in Australia and overseas (1). With a majority of dermatologists residing in metropolitan areas, teledermatology provides an apparent low cost and convenient means of access for individuals living outside these areas (1, 2). It is important that any proposed new addition to a healthcare system is assessed on the ground of economic cost and effectiveness.\ud
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Objective: To summarise and evaluate the current economic evidence comparing store-and-forward teledermatology (S&FTD) with conventional face-to-face (FTF) care.\ud
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Evidence Review: Search terms with appropriate amendments were used to return S&FTD articles that included economic analysis. Six databases were searched; title, abstract and full text reviews were conducted by two researchers. References of all unique returned articles were searched by hand. (3)\ud
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Findings: Eleven articles were selected for inclusion; consisting of once cost-analysis, five cost-minimisation analyses, three cost-effectiveness analyses and two cost-utility analyses. The Consolidated Health Economic Evaluation Reporting Standards checklist was used to evaluate quality, scores ranged from 7 to 21 out of a possible 24 points, with a median score of 17.  \ud
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Conclusions and Relevance: Current evidence is sparse, but suggests that S&FTD can be cost-effective. It appears to be cost-effective when it is used as a triage mechanism to reduce FTF appointment requirements. The cost-effectiveness of S&FTD increases when patients are required to travel further distances to access dermatology services. Further economic research is required for the emerging S&FTD which uses dermatoscopes in combination with smartphone applications, and around the possibility and consequences of patients self-capturing and transmitting images
Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in root 8 = 8 TeV pp collisions with the ATLAS detector

ATLAS Collaboration members: P. Jackson, N. Soni, M. White for the University of Adelaide.The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb−1 of pp collisions at s√=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks ( b˜1 and t˜1 respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95 % confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The b˜1 is assumed to decay via b˜1→b∼0χ1 and the t˜1 via t˜1→b∼±χ1 , with undetectable products of the subsequent decay of the ∼±χ1 due to the small mass splitting between the ∼±χ1 and the ∼0χ1 .The ATLAS collaboratio
Search for new particles decaying to ZZ using final states with leptons and jets with the ATLAS detector in root s = 7 TeV proton-proton collisions

A search is presented for a narrow resonance decaying to a pair of Z bosons using data corresponding to 1.02 fb⁻¹ of integrated luminosity collected by the ATLAS experiment from pp collisions at View the MathML sources=7 TeV. Events containing either four charged leptons (ℓℓℓℓ) or two charged leptons and two jets (ℓℓjj) are analyzed and found to be consistent with the Standard Model background expectation. Lower limits on a resonance mass are set using the Randall–Sundrum (RS1) graviton model as a benchmark. Using both ℓℓℓℓ and ℓℓjj events, an RS1 graviton with k/m⁻pl=0.1 and mass between 325 and 845 GeV is excluded at 95% confidence level. In addition, the ℓℓℓℓ events are used to set a model-independent fiducial cross section limit of σfid(pp→X→ZZ)<0.92 pb at 95% confidence level for any new sources of ZZ production with mZZ greater than 300 GeV.G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration