pinecone/core-2020-05-10-deduplication huggingface dataset:
Comparison of paired quartz OSL and feldspar pIRIR dose distributions in poorly bleached fluvial sediments from South Africa

Sponsorship: NERC RONO: NE/G524301/1A comparative study using quartz optically stimulated luminescence (OSL) and feldspar post-infrared infrared stimulated luminescence (pIRIR) was undertaken on Quaternary alluvium from an unnamed tributary of the Moopetsi River in South Africa. The aim is to assess whether the pIRIR signal can be used to date incompletely bleached fluvial sediments. Several pIRIR signals using varying stimulation and preheat temperatures were investigated; of these the pIRIR225 signal was deemed most appropriate for dating because it bleached most rapidly. The feldspar pIRIR225 equivalent dose (De) values from this site are consistently larger than those from quartz OSL, probably due to differences in the bleaching characteristics of the two signals. Additionally, the pIRIR225 De values within a sample showed less variation in precision than the quartz De data, likely due to greater averaging between grains in the feldspar small aliquots. The agreement between ages based on the OSL and pIRIR225 signals was better for younger samples (< 20 ka) than for older ones (> 50 ka); the cause of this variation is unclear.publishersversionPeer reviewe
KAEA (SUDPRO), a member of the ubiquitous KEOPS/EKC protein\ud
complex, regulates the arginine catabolic pathway and the expression of several other genes in Aspergillus nidulans

The kaeAKAE1 (suDpro) gene, which was identified in Aspergillus nidulans as a suppressor of proline auxotrophic mutations, encodes the orthologue of Saccharomyces cerevisiae Kae1p, a member of the evolutionarily conserved KEOPS/EKC (Kinase, Endopeptidase and Other Proteins of Small size/Endopeptidase-like and Kinase associated to transcribed Chromatin) complex. In yeast, this complex has been shown to be involved in tRNA modification, transcription, and genome maintenance. In A. nidulans, mutations in kaeA result in several phenotypic effects, the derepression of arginine catabolism genes, and changes in the expression levels of several others, including genes involved in amino acid and siderophore metabolism, sulfate transport, carbon/energy metabolism, translation, and transcription regulation, such as rcoATUP1, which encodes the global transcriptional corepressor
Surface nitrate utilization in the Bering Sea since 180 ka BP : insight from sedimentary nitrogen isotopes

We present high-resolution records of sedimentary nitrogen (δ15Nbulk) and carbon isotope ratios (δ13Cbulk) from piston core SO201-2-85KL located in the western Bering Sea. The records reflect changes in surface nitrate utilization and terrestrial organic matter contribution in submillennial resolution that span the last 180 kyr. The δ15Nbulk record is characterized by a minimum during the penultimate interglacial indicating low nitrate utilization (~62–80%) despite the relatively high export production inferred from opal concentrations along with a significant reduction in the terrestrial organic matter fraction (mterr). This suggests that the consumption of the nitrate pool at our site was incomplete and even more reduced than today (~84%). δ15Nbulk increases from Marine Isotope Stage (MIS) 5.4 and culminates during the Last Glacial Maximum, which indicates that nitrate utilization in the Bering Sea was raised during cold intervals (MIS 5.4, 5.2, 4) and almost complete during MIS 3 and 2 (~93–100%). This is in agreement with previous hypotheses suggesting that stronger glacial stratification reduced the nutrient supply from the subeuphotic zone, thereby increasing the iron-to-nutrient ratio and therefore the nitrate utilization in the mixed surface layer. Large variations in δ15Nbulk were also recorded from 180 to 130 ka BP (MIS 6), indicating a potential link to insolation and sea-level forcing and its related feedbacks. Millennial-scale oscillations were observed in δ15Nbulk and δ13Cbulk that might be related to Greenland interstadials
Logarithmic two-point correlation functions from a z =2 Lifshitz model

The Einstein-Proca action is known to have asymptotically locally Lifshitz spacetimes as classical solutions. For dynamical exponent z  = 2, two-point correlation functions for fluctuations around such a geometry are derived analytically. It is found that the retarded correlators are stable in the sense that all quasinormal modes are situated in the lower half-plane of complex frequencies. Correlators in the longitudinal channel exhibit features that are reminiscent of a structure usually obtained in field theories that are logarithmic, i.e. contain an indecomposable but non-diagonalizable highest weight representation. This provides further evidence for conjecturing the model at hand as a candidate for a gravity dual of a logarithmic field theory with anisotropic scaling symmetry
High-spin states beyond the proton drip-line: Quasiparticle alignments in 113 Cs

Excited states have been studied in the deformed proton emitter 113 Cs. Gamma-ray transitions have been unambiguously assigned to 113 Cs by correlation with its characteristic proton decay, using the method of recoil-decay tagging. Two previously identified rotational bands have been observed and extended to tentative spins of 45/2 and 51/2ħ , with excitation energies over 8 MeV above the lowest state. These are the highest angular momenta and excitation energies observed to date in any nucleus beyond the proton drip-line. Transitions in the bands have been rearranged compared to previous work. A study of aligned angular momenta, in comparison to the predictions of Woods–Saxon cranking calculations, is consistent with the most intense band being based on the πg7/2[422]3/2+ configuration, which would contradict the earlier πh11/2 assignment, and with the second band being based on the πd5/2[420]1/2+ configuration. The data suggest that the band based upon the πh11/2 configuration is not observed
The thermoelectric properties of inhomogeneous holographic lattices

We consider inhomogeneous, periodic, holographic lattices of D = 4 Einstein-Maxwell theory. We show that the DC thermoelectric conductivity matrix can be expressed analytically in terms of the horizon data of the corresponding black hole solution. We numerically construct such black hole solutions for lattices consisting of one, two and ten wave-numbers. We numerically determine the AC electric conductivity which reveals Drude physics as well as resonances associated with sound modes. No evidence for an intermediate frequency scaling regime is found. All of the monochromatic lattice black holes that we have constructed exhibit scaling behaviour at low temperatures which is consistent with the appearance of Ad S 2 × ℝ 2 $$  Ad{S}_2\times {\mathrm{\mathbb{R}}}^2 $$ in the far IR at T = 0
Origin of the low-mass electron pair excess in light nucleus-nucleus collisions

We report measurements of electron pair production in elementary p + p and d + p reactions at 1.25 GeV/mu with the HADES spectrometer. For the first time, the electron pairs were reconstructed for n + p reactions by detecting the proton spectator from the deuteron breakup. We find that the yield of electron pairs with invariant mass Me+e- > 0.15 GeV/c(2) is about an order of magnitude larger in n + p reactions as compared to p + p. A comparison to model calculations demonstrates that the production mechanism is not sufficiently described yet. The electron pair spectra measured in C + C reactions are compatible with a superposition of elementary n + p and p + p collisions, leaving little room for additional electron pair sources in such light collision systems.The collaboration gratefully acknowledges the support by BMBF grants 06TM970I,\ud
06GI146I, 06F-140, and 06DR135 (Germany), by GSI (TM-FR1,GI/ME3,OF/STR), by\ud
Helmholtz Alliance HA216/EMMI, by grants GA CR 202/00/1668 and GA AS CR\ud
IAA1048304 (Czech Republic), by grant KBN 1P03B 056 29 (Poland), by INFN (Italy),\ud
by CNRS/IN2P3 (France), by grants MCYT FPA2000-2041-C02-02 and XUGA PGID\ud
T02PXIC20605PN (Spain), by grant UCY-10.3.11.12 (Cyprus), by INTAS grant 03-51-3208\ud
and by EU contract RII3-CT-2004-506078.Peer reviewe
H.E.S.S. discovery of VHE y–rays from the quasar PKS 1510–089

The quasar PKS 1510−089 (z = 0.361) was observed with the H.E.S.S. array of imaging atmospheric Cherenkov telescopes during high states in the optical and GeV bands, to search for very high energy (VHE, defined as E ≥ 0.1 TeV) emission. VHE γ-rays were detected with a statistical significance of 9.2 standard deviations in 15.8 h of H.E.S.S. data taken during March and April 2009. A VHE integral flux of I(0.15 TeV < E < 1.0TeV) = (1.0 ± 0.2stat ± 0.2sys) × 10−11 cm−2 s−1 is measured. The best-fit power law to the VHE data has a photon index of Γ = 5.4 ± 0.7stat ± 0.3sys. The GeV and optical light curves show pronounced variability during the period of H.E.S.S. observations. However, there is insufficient evidence to claim statistically significant variability in the VHE data. Because of its relatively high redshift, the VHE flux from PKS 1510−089 should suffer considerable attenuation in the intergalactic space due to the extragalactic background light (EBL). Hence, the measured γ-ray spectrum is used to derive upper limits on the opacity due to EBL, which are found to be comparable with the previously derived limits from relatively-nearby BL Lac objects. Unlike typical VHE-detected blazars where the broadband spectrum is dominated by nonthermal radiation at all wavelengths, the quasar PKS 1510−089 has a bright thermal component in the optical to UV frequency band. Among all VHE detected blazars, PKS 1510−089 has the most luminous broad line region. The detection of VHE emission from this quasar indicates a low level of γ − γ absorption on the internal optical to UV photon field.http://www.aanda.org/index.php?option=com_toc&url=/articles/aa/abs/2013/06/contents/contents.htmlhttp://www.aanda.org/http://dx.doi.org/10.1051/0004-6361/20132113
Sox2 expression effects on direct reprogramming efficiency as determined by alternative somatic cell fate.

Induced pluripotent stem cells (iPSCs) are generated by directly reprogramming somatic cells by forcing them to express the exogenous transcription factors, Oct4, Sox2, Klf4 and c-Myc (OSKM). These cells could potentially be used in clinical applications and basic research. Here, we explored the molecular role of Sox2 by generating iPSCs that expressed Sox2 at various levels. Low Sox2 (LS) expression increased the efficiency of generating partially reprogrammed iPSCs in combination with OKM. Notably, we detected a significant increase in the number of fully reprogrammed iPSCs with three factors of OK and LS. LS expression was linked with the reduced expression of ectoderm and mesoderm marker genes. This indicates that cell differentiation into the ectoderm and mesoderm lineages was impeded during reprogramming. The quality of the iPSCs that was generated by using OK and LS was comparable to that of iPSCs that were produced via conventional OSK as seen by pluripotent marker gene expression and chimera formation. We conclude that Sox2 plays a crucial role in a dose-dependent manner in direct reprogramming of somatic cells to iPSCs
マイクロRNA-145の血管平滑筋細胞フェノタイプ制御によるウサギ静脈グラフトの内膜肥厚の抑制効果

The final publication is available at http://dx.doi.org/10.1016/j.jtcvs.2013.11.054. Motoaki Ohnaka, Akira Marui, Kenichi Yamahara, Kenji Minakata, Kazuhiro Yamazaki, Motoyuki Kumagai, Hidetoshi Masumoto, Shiro Tanaka, Tadashi Ikeda, Ryuzo Sakata, Effect of microRNA-145 to prevent vein graft disease in rabbits by regulation of smooth muscle cell phenotype, The Journal of Thoracic and Cardiovascular Surgery, Volume 148, Issue 2, August 2014, Pages 676-682.e2, ISSN 0022-5223.Kyoto University (京都大学)0048新制・課程博士博士(医学)甲第18544号医博第3937号新制||医||1006(附属図書館)31444京都大学大学院医学研究科医学専攻(主査)教授 木村 剛, 教授 野田 亮, 教授 瀬原 淳子学位規則第4条第1項該
Regional cerebral oxygen saturation monitoring for predicting interventional outcomes in patients following out-of-hospital cardiac arrest of presumed cardiac cause: A prospective, observational, multicentre study.

[Aim] This study investigated the value of regional cerebral oxygen saturation (rSO2) monitoring upon arrival at the hospital for predicting post-cardiac arrest intervention outcomes. [Methods] We enrolled 1195 patients with out-of-hospital cardiac arrest of presumed cardiac cause from the Japan-Prediction of Neurological Outcomes in Patients Post-cardiac Arrest Registry. The primary endpoint was a good neurologic outcome (cerebral performance categories 1 or 2 [CPC1/2]) 90 days post-event. [Results] A total of 68 patients (6%) had good neurologic outcomes. We found a mean rSO2 of 21% ± 13%. A receiver operating characteristic curve analysis indicated an optimal rSO2cut-off of ≥40% for good neurologic outcomes (area under the curve 0.92, sensitivity 0.81, specificity 0.96). Good neurologic outcomes were observed in 53% (55/103) and 1% (13/1092) of patients with high (≥40%) and low (<40%) rSO2, respectively. Even without return of spontaneous circulation (ROSC) upon arrival at the hospital, 30% (9/30) of patients with high rSO2 had good neurologic outcomes. Furthermore, 16 patients demonstrating ROSC upon arrival at the hospital and low rSO2 had poor neurologic outcomes. Multivariate analyses indicated that high rSO2 was independently associated with good neurologic outcomes (odds ratio = 14.07, P < 0.001). Patients with high rSO2showed favourable neurologic prognoses if they had undergone therapeutic hypothermia or coronary angiography (CPC1/2, 69% [54/78]). However, 24% (25/103) of those with high rSO2 did not undergo these procedures and exhibited unfavourable neurologic prognoses (CPC1/2, 4% [1/25]). [Conclusion] rSO2 is a good indicator of 90-day neurologic outcomes for post-cardiac arrest intervention patients
Thermal monitoring of hydrothermal activity by permanent infrared automatic stations: Results obtained at Solfatara di Pozzuoli, Campi Flegrei (Italy)

A permanent automatic infrared (IR) station was installed at Solfatara crater, the most active zone of Campi Flegrei caldera. After a positive in situ calibration of the IR camera, we analyze 2175 thermal IR images of the same scene from 2004 to 2007. The scene includes a portion of the steam heated hot soils of Solfatara. The experiment was initiated to detect and quantify temperature changes of the shallow thermal structure of a quiescent volcano such as Solfatara over long periods. Ambient temperature results as the main parameter affecting IR temperatures while air humidity and rain control image quality. A geometric correction of the images was necessary to remove the effects of slow movement of the camera. After a suitable correction the images give a reliable and detailed picture of the temperature changes, over the period October 2004 – January 2007, which suggests origin of the changes were linked to anthropogenic activity, vegetation growth and to the increase of the flux of hydrothermal fluids in the area of the hottest fumaroles. Two positive temperature anomalies were registered after the occurrence of two seismic swarms which affected the hydrothermal system of Solfatara in October 2005 and October 2006. It is worth noting that these signs were detected in a system characterized by a low level of activity with respect to systems affected by real volcanic crisis where more spectacular results will be expected. Results of the experiment show that this kind of monitoring system can be a suitable tool for volcanic surveillance
Combining inland and offshore paleotsunamis evidence: the Augusta Bay (eastern Sicily, Italy) case study

Offshore and inland geological evidence for
multiple tsunami inundations was found in the Augusta Bay
area: (1) the main local historical tsunamis (1908, 1693,
1169), (2) two far-generated tsunamis (i.e. Crete 365AD
and Santorini, 3600 BP), and (3) seven unknown tsunamis).
Average tsunami recurrence intervals from inland and
offshore investigations of about 550 and 320 yr, respectively
were obtained for the past 4 ka. The history of paleotsunamis
from the marine record appears to be as complete as
the historical one for the past millennium, yielding an
average tsunami recurrence interval of 250 yr for the Augusta
Bay. Geological data allow also estimating a minimum
tsunami inundation distance of 530m and a minimum
run-up of 5 m. The marine record contains evidence for
more paleotsunamis with respect to the inland one because
of continuous sedimentation and better preservation of
stratigraphy in the offshore with respect to coastal areas,
which are commonly affected by intermittent-erosion and
sedimentation and anthropic activities.
This work shows that the integration of geological and
historical data can provide critical information regarding
the extent and age of tsunamis of the past (e.g. inundation
distance, age, and frequency), which is of immediate
relevance for tsunami hazard assessment
The low energy dynamics of charge two dyonic instantons.

We explore the low energy dynamics of charge two instantons and dyonic instantons in SU(2) 5-dimensional Yang-Mills. We make use of the moduli space approximation and first calculate the moduli space metric for two instantons. For dyonic instantons the effective action of the moduli space approximation also includes a potential term which we calculate. Using the ADHM construction we are able to understand some aspects of the topology and structure of the moduli space. We find that instantons undergo right angled scattering after a head on collision and we are able to give an analytic description of this in terms of a quotient of the moduli space by symmetries of the ADHM data. We also explore the scattering of instantons and dyonic instantons numerically in a constrained region of the moduli space. Finally we exhibit some examples of closed geodesics on the moduli space, and geodesics which hit the moduli space singularities in finite time
Processing and microstructure characterisation of oxide dispersion\ud
strengthened Fe–14Cr–0.4Ti–0.25Y2O3 ferritic steels fabricated by spark\ud
plasma sintering

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).© 2015 The Authors. Ferritic steels strengthened with Ti–Y–O nanoclusters are leading candidates for fission and fusion reactor components. A Fe–14Cr–0.4Ti + 0.25Y2O3 (14YT) alloy was fabricated by mechanical alloying and subsequently consolidated by spark plasma sintering (SPS). The densification of the 14YT alloys significantly improved with an increase in the sintering temperature. Scanning electron microscopy and electron backscatter diffraction revealed that 14YT SPS-sintered at 1150 °C under 50 MPa for 5 min had a high density (99.6%), a random grain orientation and a bimodal grain size distribution (<500 nm and 1–20 μm). Synchrotron X-ray diffraction patterns showed bcc ferrite, Y2Ti2O7, FeO, and chromium carbides, while transmission electron microscopy and atom probe tomography showed uniformly dispersed Y2Ti2O7 nanoclusters of <5 nm diameter and number density of 1.04 × 1023 m−3. Due to the very much shorter consolidation times and lower pressures used in SPS compared with the more usual hot isostatic pressing routes, SPS is shown to be a cost-effective technique for oxide dispersion strengthened (ODS) alloy manufacturing with microstructural features consistent with the best-performing ODS alloys
The impact of National Qualifications Frameworks: by which yardstick do we measure dreams?

This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Education and Work on 16 Dec 2015, available online: http://dx.doi.org/10.1080/13639080.2015.1122178National Qualifications Frameworks (NQFs) are a global phenomenon. This is evidenced by their scale, coverage and intrinsic link with education policy across Europe and beyond. Research into their impact has encompassed a number of perspectives; theoretical, practical and evaluative. Yet, despite the existence of critical literature related to the development, design and impact of NQFs, little research has questioned the actual feasibility of researching the ‘impact’ of NQFs per se. The arguments in this paper position such research as both unfeasible and futile: a dream for which it is impossible to identify a suitable yardstick to measure. We base our argument around three broad themes: linguistics and semantics; homogeneity; and methodological complexity. Around these themes, we aim to show why such research has proved problematic and, in doing so, contribute to the field as it explores the impact of NQFs in the future
How do supply chain management and information systems practices influence operational performance : evidence from emerging country SMEs

This study first provides a comparative analysis of the impact of supply chain management (SCM) and information systems (IS) practices on operational performance (OPER) of small- and medium-sized enterprises (SMEs) operating in two neighbouring emerging country markets of Turkey and Bulgaria. Then, we investigate moderating effects of both SCM–IS-linked enablers and inhibitors on the links between SCM and IS practices and OPER of SMEs. To this end, we first empirically identify the underlying dimensions of SCM and IS practices, and SCM–IS-related enabling and inhibiting factors. Second, a series of regression analyses are undertaken to estimate the impact of the study's constructs on OPER of SMEs. The results are discussed comparatively within the contexts of both Turkish and Bulgarian SMEs and beyond. The study makes a significant contribution to the extant literature through obtaining and analysing cross-national survey data of SCM and IS practices in emerging country markets
Operator (quasi-)similarity, quasi-Hermitian operators and all that

Motivated by the recent developments of pseudo-Hermitian quantum mechanics,
we analyze the structure generated by unbounded metric operators in a Hilbert
space. To that effect, we consider the notions of similarity and
quasi-similarity between operators and explore to what extent they preserve
spectral properties. Then we study quasi-Hermitian operators, bounded or not,
that is, operators that are quasi-similar to their adjoint and we discuss their
application in pseudo-Hermitian quantum mechanics. Finally, we extend the
analysis to operators in a partial inner product space (\pip), in particular
the scale of Hilbert spaces generated by a single unbounded metric operator.Comment: 16 pages. arXiv admin note: text overlap with arXiv:1409.3497,
  arXiv:1210.3163, arXiv:1307.564
Near-Optimal Stochastic Approximation for Online Principal Component
  Estimation

Principal component analysis (PCA) has been a prominent tool for
high-dimensional data analysis. Online algorithms that estimate the principal
component by processing streaming data are of tremendous practical and
theoretical interests. Despite its rich applications, theoretical convergence
analysis remains largely open. In this paper, we cast online PCA into a
stochastic nonconvex optimization problem, and we analyze the online PCA
algorithm as a stochastic approximation iteration. The stochastic approximation
iteration processes data points incrementally and maintains a running estimate
of the principal component. We prove for the first time a nearly optimal
finite-sample error bound for the online PCA algorithm. Under the subgaussian
assumption, we show that the finite-sample error bound closely matches the
minimax information lower bound.Comment: Finalized version (bib and typos updated). To appear in Mathematical
  Programmin