cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: ÐÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ Ð²ÐµÐ±-ÑÐ°Ð¹ÑÐ° ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð² ÑÑÐµÑÐµ B2B (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«Ð¤ÐÐÐÐ¢ÐÐÐ¡Â»)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Promotion of the company's web site in the B2B sphere (on the example of FLIGHTEX LLC)
Creators: name: ÐÑÑÐºÐ°ÑÐµÐ²Ð°, ÐÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½ÑÐµ ÑÐµÑÐ¸
Ð²ÐµÐ±-ÑÐ°Ð¹Ñ
b2b
Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ
ÐºÐ¾Ð½ÑÐµÐ½Ñ
ÐºÐ¾Ð½Ð²ÐµÑÑÐ¸Ñ
seo-Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ
Ð¿Ð¸ÑÐµÐ²Ð°Ñ Ð¿ÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½Ð¾ÑÑÑ
social networking
web-site
promotion
content
conversion
seo-optimisation
food industry

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹Ì ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ñ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð² ÑÐµÑÐ¸ ÐÐ½ÑÐµÑÐ½ÐµÑ. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð° ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐÐÐ Â«Ð¤ÐÐÐÐ¢ÐÐÐ¡Â», ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»ÑÐ½ÑÐµ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð° ÑÑÑÐ½Ð¾ÑÑÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸ Ð¿Ð¾ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ ÑÐ°Ð¹ÑÐ° ÐÐÐ Â«Ð¤ÐÐÐÐ¢ÐÐÐ¡Â» Ñ ÑÐµÐ»ÑÑ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¸Ð±ÑÐ»Ð¸ Ð¸ ÑÐ·Ð½Ð°Ð²Ð°ÐµÐ¼Ð¾ÑÑÐ¸ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸. ÐÑÐ¾Ð²ÐµÐ´ÑÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ½Ð¾Ð¹Ì ÑÑÐµÐ´Ñ Ð½Ð° ÑÑÐ½ÐºÐµ, Ð° ÑÐ°ÐºÐ¶Ðµ SWOT-Ð°Ð½Ð°Ð»Ð¸Ð·. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ Ð²ÐµÐ±-ÑÐ°Ð¹ÑÐ°.
description: In this paper, we consider ways to promote on the Internet. The characteristic of LTD FLYTEX activity of is made, possibilities of the company are considered, and also the essence of development of strategy for advance of production of LTD FLYTEX for the purpose of increase in profit and recognition of the company is stated. The analysis of the competitive environment in the market, as well as SWOT analysis. The optimization of web-site is done.
title: Partnership, parenthood, employment and self-rated health in Germany and the EU – Results from the European Health Interview Survey (EHIS) 2
Creators: name: Koch-Institut, Robert
Publisher: name: Robert Koch-Institut
Year: 2019
Subjects: subject: Studienmethodik
subject: EHIS 2
subject: Europäischer Vergleich
subject: EU
subject: Gesundheitsmonitoring
subject: 610 Medizin und Gesundheit

description: In der Europäischen Union (EU) werden Daten zur Gesundheit der Bevölkerung für die wissenschaftliche Bewertung gesundheitlicher Fragestellungen, die Gestaltung und Weiterentwicklung politischer Richtlinien und die gezielte Planung von Maßnahmen benötigt. Alle EU-Mitgliedstaaten erheben daher im Rahmen des European Health Interview Survey (EHIS) regelmäßig Daten zum Gesundheitszustand, zur gesundheitlichen Versorgung, zu Gesundheitsdeterminanten und zur sozioökonomischen Lage ihrer Bevölkerungen. Befragt werden Personen im Alter von mindestens 15 Jahren, die in privaten Haushalten leben. Die zweite EHIS-Welle (EHIS 2) wurde zwischen 2013 und 2015 durchgeführt. Die EU-Mitgliedstaaten wählten für EHIS 2 jeweils eine national repräsentative Stichprobe der Grundgesamtheit aus, basierend auf Bevölkerungsregistern, Volkszählungen, Wohnregistern oder anderen statistischen beziehungsweise administrativen Quellen. Die Erhebungsmodi in den EU-Mitgliedstaaten wurden entsprechend den national etablierten Methoden gewählt, wobei auch Mixed-Mode-Erhebungen zum Einsatz kamen. Im Durchschnitt über alle EU-Mitgliedstaaten dauerte die Datenerhebungsperiode acht Monate. Die Mitgliedstaaten unternahmen erhebliche Anstrengungen, um möglichst hohe Responsequoten zu erreichen. Die harmonisiert erhobenen EHIS-Daten besitzen ein hohes Maß an Vergleichbarkeit. Sie stellen eine wichtige Informationsgrundlage für die europäische Gesundheitspolitik und -berichterstattung dar.
Complete Embedded Self-Translating Surfaces under Mean Curvature Flow
Creators: name: Nguyen, Xuan Hien
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35, 53

description: We describe a construction of complete embedded self-translating surfaces under mean curvature flow by desingularizing the intersection of a finite family of grim reapers in general position.
description: 42 pages, 8 figures. v2: typos corrected
Semi-Classical Isotropization of the Universe during a de Sitter phase
Creators: name: Cianfrani, Francesco
name: Montani, Giovanni
name: Muccino, Marco
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Semi-classical states for the Wheeler-DeWitt equation of a Bianchi type I model in the presence of a scalar field are analyzed. It is outlined how this scheme can effectively describe more general situations, where the curvature of the Bianchi type IX model and a proper potential term for the scalar field are present. The introduction of a cosmological constant term accounts for the quasi-isotropization mechanism which bridges the proposed framework with a late isotropic phase. This result makes the semi-classical Bianchi I model a plausible scenario for the Universe pre-inflationary phase.
description: 6 pages, accepted for publication in Phys. Rev. D
On linear dust-gas streaming instabilities in protoplanetary discs
Creators: name: Jacquet, Emmanuel
name: Balbus, Steven A.
name: Latter, Henrik N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We revisit, via a very simplified set of equations, a linear streaming instability (technically an overstability), which is present in, and potentially important for, dusty protoplanetary disks (Youdin & Goodman 2005). The goal is a better understanding of the physical origin of such instabilities, which are notoriously subtle. Rotational dynamics seem to be essential to this type of instability, which cannot be captured by one-dimensional Cartesian models. Dust `pileups' in moving pressure maxima are an important triggering mechanism of the instability, and drag feedback of dust upon the gas allows these maxima to be strengthened. Coriolis forces and the background drift counteract the effects of the pressure force.
description: 9 pages, 1 figure. Accepted to MNRAS
Additional file 6 of VA-TIRFM-based SM kymograph analysis for dwell time and colocalization of plasma membrane protein in plant cells
Creators: name: Su, Bodan
name: Wang, Anqi
name: Xie, Daoxin
name: Shan, Xiaoyi
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 6: Figure S4. Colocalization between AtRGS1-YFP and mCherry-AtREM1.3 analyzed by traditional kymography under different conditions. A–C Typical 2D viewer of AtRGS1-YFP (A), mCherry-AtREM1.3 (B), and merge (C) images at steady state. D–F Typical 2D viewer of AtRGS1-YFP (D), mCherry-AtREM1.3 (E), and merge (F) images with JA treatment. Bar = 3 s. The 6-day-old transgenic seedlings co-expressing AtRGS1-YFP and mCherry-AtREM1.3 were treated with ½ MS liquid medium (CK) and 100 μM MeJA (JA) for 8 h.
Regionalisation of rainfall depth–duration–frequency curves with different data types in Germany
Creators: name: Shehu, Bora
name: Willems, Winfried
name: Stockel, Henrike
name: Thiele, Luisa-Bianca
name: Haberlandt, Uwe
Publisher: name: Munich : EGU
Year: 2023
Subjects: subject: Datatypes
subject: Depth duration frequency curves
subject: Depth-duration
subject: High resolution
subject: Kriging
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Rainfall depth–duration–frequency (DDF) curves are required for the design of several water systems and protection works. For the reliable estimation of such curves, long and dense observation networks are necessary, which in practice is seldom the case. Usually observations with different accuracy, temporal resolution and density are present. In this study, we investigate the integration of different observation datasets under different methods for the local and regional estimation of DDF curves in Germany. For this purpose, two competitive DDF procedures for local estimation (Koutsoyiannis et al., 1998; Fischer and Schumann, 2018) and two for regional estimation (kriging theory vs. index based) are implemented and compared. Available station data from the German Weather Service (DWD) for Germany are employed, which includes 5000 daily stations with more than 10 years available, 1261 high-resolution (1 min) recordings with an observation period between 10 and 20 years, and finally 133 high-resolution (1 min) recordings with 60–70 years of observations. The performance of the selected approaches is evaluated by cross-validation, where the local DDFs from the long sub-hourly time series are considered the true reference. The results reveal that the best approach for the estimation of the DDF curves in Germany is by first deriving the local extreme value statistics based on Koutsoyiannis et al.'s (1998) framework and later using the kriging regionalisation of long sub-hourly time series with the short sub-hourly time series acting as an external drift. The integration of the daily stations proved to be useful only for DDF values of a low return period (T[a] < 10 years) but does not introduce any improvement for higher return periods (T[a] ≥ 10 years).
Prompt Tidal Disruption of Stars as an Electromagnetic Signature of Supermassive Black Hole Coalescence
Creators: name: Stone, Nicholas
name: Loeb, Abraham
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A precise electromagnetic measurement of the sky coordinates and redshift of a coalescing black hole binary holds the key for using its gravitational wave (GW) signal to constrain cosmological parameters and to test general relativity. Here we show that the merger of ~10^{6-7}M_sun black holes is generically followed over a period of years by multiple electromagnetic flares from tidally disrupted stars. The sudden recoil imparted to the merged black hole by GW emission promptly fills its loss cone and results in a tidal disruption rate of stars as high as ~0.1 per year. The prompt disruption of a star within a single galaxy over a short period provides a unique electromagnetic flag of a recent black hole coalescence event, and sequential disruptions could be used on their own to calibrate the expected rate of GW sources for pulsar timing arrays or the proposed Laser Interferometer Space Antenna (LISA).
description: 6 pages, 3 figures
Additional file 1 of Improved gut microbiota features after the resolution of SARS‑CoV‑2 infection
Creators: name: De Maio, Flavio
name: Ianiro, Gianluca
name: Coppola, Gaetano
name: Santopaolo, Francesco
name: Abbate, Valeria
name: Bianco, Delia Mercedes
name: Del Zompo, Fabio
name: De Matteis, Giuseppe
name: Leo, Massimo
name: Nesci, Antonio
name: Nicoletti, Alberto
name: Pompili, Maurizio
name: Cammarota, Giovanni
name: Posteraro, Brunella
name: Sanguinetti, Maurizio
name: Gasbarrini, Antonio
name: Ponziani, Francesca Romana
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: 60506 Virology
subject: Computational Biology
subject: Cardiology

description: Additional file 1. Principal coordinate analysis (PCoA) on weighted UniFrac distance of the gut microbiome of patient with severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2)-related pneumonia, who were tested before and after resolution of the infection, and patients with SARS-CoV-2 unrelated pneumonia.
title: Changing lanes
title: seasonal differences in energy metabolism of adipocytes in grizzly bears (Ursus arctos horribilis)
titleType: Subtitle
Creators: name: Hapner, Hannah
Publisher: name: Washington State University
Year: 2022

description: Obesity is among the most prevalent of health conditions in humans leading to a multitude of
description: metabolic pathologies such as type 2 diabetes and hyperglycemia. However, there are many wild
description: animals that have large seasonal cycles of fat accumulation and loss that do not exhibit the health
description: consequences observed in obese humans. One example is the grizzly bear (Ursus arctos
description: horribilis) that can have body fat contents >40%. It is known that hibernating bears survive by
description: metabolizing their fat stores. Previous in vitro studies found that hibernation season adipocytes
description: are insulin resistant and exhibit increased lipolysis as measured by extracellular glycerol. Yet,
description: other aspects of cellular metabolism were not addressed, leaving this in vitro model incomplete.
description: To this end, the current studies were performed to determine if the cellular energetic phenotype -
description: measured via metabolic flux - of hibernating bears was retained in cultured adipocytes and to
description: what extent that was due to serum or intrinsic cellular factors. Extracellular acidification rate
description: (ECAR) and oxygen consumption rate (OCR) were used to calculate proton efflux rate (PER),
description: and total ATP defined as both ATP from glycolysis and from mitochondrial respiration.
description: Hibernation serum treated adipocytes lack metabolic flexibility and produce less ATP than active
description: serum treated adipocytes. Insulin had minor influence on ATP production, but inhibited lipolysis in active but not hibernation serum treated adipocytes. This suggests that the reduction in
description: glycolysis during hibernation is occurring downstream of insulin signaling and glucose uptake.
description: These findings reveal a potent seasonal serum effect on metabolic capacity of bear adipocytes.
description: Elucidation of responsible serum components involved and the cellular mechanisms that enable
description: these influences may provide a novel avenue for the development of future treatments of human
description: metabolic diseases.
Thioredoxin Is a New Target for the Phytotoxicity of Small Lactone Mycotoxins, Patulin and Penicillic Acid on Maize Seedlings
Creators: name: Ismaiel, Ahmed A.
name: Papenbrock, Jutta
Publisher: name: Basel : MDPI AG
Year: 2023
Subjects: subject: patulin (PAT)
subject: penicillic acid (PA)
subject: aflatoxin B1 (AFB1)
subject: maize
subject: thioredoxin (Trx)
subject: thioredoxin reductase (Tr)
subject: glutathione (GSH)
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: The phytotoxic mechanisms of patulin (PAT) and penicillic acid (PA) have not been identified unambiguously. This study aims to clarify their effects on thioredoxins (Trxs). Aflatoxin B1 (AFB1), PAT and PA were isolated by solvent extraction and chromatographic techniques from the cultures of Aspergillus flavus Z2 (LC171449), Penicillium vulpinum CM1 and Aspergillus ochraceus EMCC516, respectively. The three mycotoxins showed phytotoxicity to the germination of maize seeds, which was manifested by inhibiting radicle and coleoptile emergence, in addition to their toxic effects on fresh weights and root and shoot lengths. The phytotoxicity of AFB1 and PAT was greater than that of PA. Due to the central roles exhibited by plant Trxs in cellular metabolic activities, they were tested as target proteins for PAT and PA using AFB1 as positive control. In vivo studies showed that the mycotoxins significantly reduced Trx activity measured in the roots and shoots of maize seedlings. PAT showed greater Trx-inhibiting activity than PA and AFB1. In vitro studies of the mycotoxins on Trx y1 (from Arabidopsis thaliana) and thioredoxin reductase (Tr, from rat liver) activities confirm the results of in vivo studies. The inactivation of Trx with PAT and PA was reduced in the presence of glutathione (GSH). Data obtained suggest that lactone mycotoxins are more highly reactive with simple low-molecular-weight thiols (like GSH) than with complex ones (like Trx).
Representation zeta functions of compact p-adic analytic groups and arithmetic groups
Creators: name: Avni, Nir
name: Klopsch, Benjamin
name: Onn, Uri
name: Voll, Christopher
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 22E50, 20E40

description: We introduce new methods from p-adic integration into the study of representation zeta functions associated to compact p-adic analytic groups and arithmetic groups. They allow us to establish that the representation zeta functions of generic members of families of p-adic analytic pro-p groups obtained from a global, `perfect' Lie lattice satisfy functional equations. In the case of `semisimple' compact p-adic analytic groups, we exhibit a link between the relevant p-adic integrals and a natural filtration of the locus of irregular elements in the associated semisimple Lie algebra, defined by centraliser dimension. Based on this algebro-geometric description, we compute explicit formulae for the representation zeta functions of principal congruence subgroups of the groups SL_3(O), where O is a compact discrete valuation ring of characteristic 0, and of the corresponding unitary groups. These formulae, combined with approximative Clifford theory, allow us to determine the abscissae of convergence of representation zeta functions associated to arithmetic subgroups of algebraic groups of type A_2. Assuming a conjecture of Serre on the Congruence Subgroup Problem, we thereby prove a conjecture of Larsen and Lubotzky on lattices in higher-rank semisimple groups for algebraic groups of type A_2 defined over number fields.
description: 62 pages, minor changes
A new base of wind turbine noise measurement data and its application for a systematic validation of sound propagation models
Creators: name: Könecke, Susanne
name: Hörmeyer, Jasmin
name: Bohne, Tobias
name: Rolfes, Raimund
Publisher: name: Göttingen : Copernicus Publications
Year: 2023
Subjects: subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: Extensive measurements in the area of wind turbines were performed in order to validate a sound propagation model which is based on the Crank–Nicolson parabolic equation method. The measurements were carried out over a flat grass-covered landscape and under various environmental conditions. During the measurements, meteorological and wind turbine performance data were acquired and acoustical data sets were recorded at distances of 178, 535 and 845 m from the wind turbine. By processing and analysing the measurement data, validation cases and input parameters for the sound propagation model were derived. The validation includes five groups that are characterised by different sound propagation directions, i.e. downwind, crosswind and upwind conditions in varying strength. In strong upwind situations, the sound pressure levels at larger distances are overestimated because turbulence is not considered in the modelling. In the other directions, the model reproduces the measured sound propagation losses well in the overall sound pressure level and in the third octave band spectra. As in the recorded measurements, frequency-dependent maxima and minima are identified, and losses generally increase with increasing distance and frequency. The agreement between measured and modelled sound propagation losses decreases with distance. The data sets used in the validation are freely accessible for further research.
Robust Tests in Genome-Wide Scans under Incomplete Linkage Disequilibrium
Creators: name: Zheng, Gang
name: Joo, Jungnam
name: Zaykin, Dmitri
name: Wu, Colin
name: Geller, Nancy
Publisher: name: arXiv
Year: 2010
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Under complete linkage disequilibrium (LD), robust tests often have greater power than Pearson's chi-square test and trend tests for the analysis of case-control genetic association studies. Robust statistics have been used in candidate-gene and genome-wide association studies (GWAS) when the genetic model is unknown. We consider here a more general incomplete LD model, and examine the impact of penetrances at the marker locus when the genetic models are defined at the disease locus. Robust statistics are then reviewed and their efficiency and robustness are compared through simulations in GWAS of 300,000 markers under the incomplete LD model. Applications of several robust tests to the Wellcome Trust Case-Control Consortium [Nature 447 (2007) 661--678] are presented.
description: Published in at http://dx.doi.org/10.1214/09-STS314 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Power spectrum estimation for frequency domain ambient modal analysis and oscillation monitoring
Creators: name: THOMAS, CHAD E
Publisher: name: Washington State University
Year: 2021

description: This thesis studies the effect of different Power Spectrum Density (PSD) estimation
description: techniques on the accuracy of the Fast Frequency Domain Decomposition (FFDD) method. The
description: FFDD technique utilizes ambient synchrophasor measurements to estimate the frequency,
description: damping ratio, energy and mode shape of dominant system modes by analyzing the PSD matrix
description: from multiple synchrophasor measurements. In this thesis, the impact of three different methods
description: for PSD estimation on the accuracy of FFDD modal estimates is investigated: PWelch,
description: MultiTaper Method (MTM) using Slepian Tapers, and MTM using Sine Tapers. Tests are done
description: using synthetic and archived synchrophasor data. All three PSD methods are shown to work well
description: for oscillation detection of synthetic sustained oscillations using FFDD. However, for ambient
description: modal analysis, it is shown that FFDD based on MTM with Slepian Tapers has the most reliable
description: modal estimations among the three methods. FFDD using both MTM with Sine Tapers and
description: PWelch have bias issues in estimating well-damped system modes, requiring more research for
description: them to be suitable for FFDD.
An X-ray Microscopy Study of the Microstructural Effects on Thermal Conductivity in Cast Aluminum-Copper Compounds
Creators: name: Fromm, Andreas Christopher
name: Kahra, Christoph
name: Selmanovic, Armin
name: Maier, Hans Jürgen
name: Klose, Christian
Publisher: name: Basel : MDPI
Year: 2023
Subjects: subject: aluminum-copper compounds
subject: compound casting
subject: silane
subject: microstructure
subject: thermal conductivity
subject: X-ray microscopy
subject: volumetric characterization
subject: Kirkendall effect
subject: porosity
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: A metallurgical joint between aluminum and copper established by compound casting provides for high thermal conductivity, which is required for lightweight cooling solutions in applications such as high-power light-emitting diodes or computer processors. If casting is employed in a silane-doped inert gas atmosphere whose oxygen partial pressure is adequate to extreme high vacuum, reoxidation of the active surfaces of aluminum and copper is prevented, and thus a metallurgical bond can be created directly between aluminum and copper. With this approach, thermal conductivities as high as 88.3 W/m·K were realized. In addition, X-ray microscopy was used to shed light on the microstructure–thermal property relationship. It is demonstrated that both porosity and non-bonded areas have a substantial impact on the thermophysical properties of the compound zone. Based on the data obtained, casting parameters can be developed that provide for defect-free bonding zones and optimal heat transfer between the joining partners.
Temperature dependence of the band gap of 28Si:P at very low temperatures measured via time-resolved optical spectroscopy
Creators: name: Sauter, E.
name: Abrosimov, N.V.
name: Hübner, J.
name: Oestreich, M.
Publisher: name: College Park, MD : APS
Year: 2023
Subjects: subject: Absorption spectroscopy
subject: Electric fields
subject: Electron-phonon interactions
subject: Silicon
subject: Temperature distribution
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We measure the temperature dependence of the indirect band gap of isotopically purified 28Si:P in the regime from 0.1 K to 3 K by high-resolution absorption spectroscopy of the donor bound exciton transition. The measurements increase the up-to-date precision of the temperature-dependent band gap change by more than one order of magnitude and reveal a T4 dependence which is about a factor of two less than observed in previous measurements. Such a T4 dependence is predicted by theory, but the absolute values differ between our experiment and the most up-to-date calculations by a factor of 30, corroborating that the electron-phonon interaction at low temperatures is still not correctly included into theory. What is more, the ability of such very high-precision band-gap measurements facilitates the use of time- and spatially resolved 28Si:P absorption as a contactless, local thermometer and electric field sensor with a demonstrated time resolution of milliseconds.
Socialization of domestic dogs and the role of veterinarians
Creators: name: Rezvani, Taylor
Publisher: name: Washington State University
Year: 2022
Subjects: Dog socialization
Puppy socialization
Puppy training
Veterinary education
Education

description: Socialization is promoted by behavioral professionals as a standard of care for domestic dogs (Canis lupus familiaris). However, undesirable behaviors characteristic of inadequate socialization are common. The aim of this work was to develop a foundation of understanding to inform the development of a puppy socialization and training curriculum that can be integrated into veterinary medical education programs. Findings from the review of relevant literature provided robust evidence for an association between higher amounts of socialization and desirable social behavior in adulthood. I recommend 1) provision of socialization programs while puppies are still with their mother and littermates and 2) puppy participation in socialization classes upon adoption, starting prior to 12 weeks of age. The mixed methods study indicated that veterinarian participants believed that puppy socialization and training are critical for ensuring appropriate adult dog behavior and that veterinarians have a responsibility to educate themselves and their clients about this topic. Participant understanding of the topic was minimally supported through their primary veterinary education and together with their valuation of the topic was associated with how they educated clients. The integration of a puppy socialization and training curriculum into veterinary medicine educational programs would enable graduates to confidently provide impactful and specific guidance, services, and referrals to their clientele, contributing to a reduction in the frequency of undesirable behaviors in adult dogs that can lead to a damaged human-dog relationship, relinquishment, and euthanasia.
Coupling M2-branes to background fields
Creators: name: Allen, James P
name: Smith, Douglas J
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss some of the issues arising in trying to extend the ABJM action to include couplings to background fields. This is analogous to the Myers-Chern-Simons terms of the multiple Dp-brane action. We review and extend previous results to include terms which are quadratic in the background fields. These are fixed by requiring that we recover the correct Myers-type terms upon using the novel Higgs mechanism to reduce to the multiple D2-brane action.
description: 20 pages, no figures
The glassy response of double torsion oscillators in solid Helium-4
Creators: name: Graf, Matthias J.
name: Su, Jung-Jung
name: Dahal, Hari P.
name: Grigorenko, I.
name: Nussinov, Zohar
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Single and double torsion oscillators have been used successfully to measure the anomalous change in resonant frequency and accompanying dissipation in solid He-4. We present a glass description of the mechanical anomalies found in torsion oscillator measurements. Our results show that it is not necessary to invoke a supersolid interpretation to explain these mechanical anomalies. Previously, we demonstrated that the back-action of a glassy subsystem present in solid He-4 can account for frequency change and dissipation peak in many single torsion oscillator experiments. Here, we show that the same glassy back-action can explain the experimental results of the composite torsion oscillator developed by the Rutgers group, which measures the response of solid He-4 at the in-phase mode f1=496 Hz and out-of-phase mode f2=1173 Hz.
description: QFS 2010 contribution; Revision has corrected typos and expanded introduction. To appear in Journal of Low Temperature Physics
Literature syntheses to inform marine ecosystem management: lessons learned from stakeholder participation
Creators: name: Kuhn, Tinka
name: Vikström, Suvi
name: Suškevičs, Monika
name: Storie, Joanna T.
name: Saikkonen, Liisa
name: Rees, Rebecca
name: Håkansson, Cecilia
name: Oinonen, Soile
name: Burkhard, Benjamin
Publisher: name: London [u.a.] : Taylor & Francis
Year: 2023
Subjects: subject: Evidence synthesis
subject: HELCOM region
subject: policymakers
subject: science-policy interaction
subject: Sebastian Villasante
subject: stakeholder participation
subject: systematic map
subject: systematic review
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Systematic literature syntheses are a key element in the scientific realm, considering the steadily growing amount of available knowledge. Involving stakeholders in the research process brings a wide range of advantages, like broadening the perspectives on the problem in question, increasing the relevance of results for policy- and decision-making, the public and other end-users and thus enhancing the impact and acceptance of research. While participatory approaches are on the rise, reflections on stakeholder involvement in systematic syntheses on environmental management are scarce. We reflect on the process of involving stakeholders with expertise also from outside academia during three literature syntheses with different foci of marine and coastal ecosystem services in the Baltic Sea. Our analysis is based on notes, e-mails, minutes and recordings of internal project meetings, interviews and workshops involving both researchers and stakeholders. We discuss the challenges the participatory approach introduced and develop lessons learned to support the planning of stakeholder engagement for future literature syntheses. We conclude that stakeholder identification, communication, collaboration and knowledge translation are highly time- and resource-intensive processes. Furthermore, appropriate training and experience are necessary for the design, execution and evaluation of participatory methods tailored to each project stage. Therefore, we underline the importance of adequate consideration of the required resources during project planning and implementation. To encourage and support valuable stakeholder engagement and knowledge exchange between the research community and actors of policy and practice, more appreciation of such efforts by funding institutions and within the wider scientific community is needed.
Observation of Magnetic Supercooling of the Transition to the Vortex State
Creators: name: Davis, J. P.
name: Vick, D.
name: Burgess, J. A. J.
name: Fortin, D. C.
name: Li, P.
name: Sauer, V.
name: Hiebert, W. K.
name: Freeman, M. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate that the transition from the high-field state to the vortex state in a nanomagnetic disk shows the magnetic equivalent of supercooling. This is evidence that this magnetic transition can be described in terms of a modified Landau first-order phase transition. To accomplish this we have measured the bulk magnetization of single magnetic disks using nanomechanical torsional resonator torque magnetometry. This allows observation of single vortex creation events without averaging over an array of disks or over multiple runs.
description: 11 pages preprint, 4 figures, accepted to New Journal of Physics
The Value of Information for Populations in Varying Environments
Creators: name: Rivoire, Olivier
name: Leibler, Stanislas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Information Theory (cs.IT)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The notion of information pervades informal descriptions of biological systems, but formal treatments face the problem of defining a quantitative measure of information rooted in a concept of fitness, which is itself an elusive notion. Here, we present a model of population dynamics where this problem is amenable to a mathematical analysis. In the limit where any information about future environmental variations is common to the members of the population, our model is equivalent to known models of financial investment. In this case, the population can be interpreted as a portfolio of financial assets and previous analyses have shown that a key quantity of Shannon's communication theory, the mutual information, sets a fundamental limit on the value of information. We show that this bound can be violated when accounting for features that are irrelevant in finance but inherent to biological systems, such as the stochasticity present at the individual level. This leads us to generalize the measures of uncertainty and information usually encountered in information theory.
title: ÐÐ»Ð°Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ¸ÑÐ¾Ð²ÐºÐ¸ Ð² ÑÐ¼ÐµÑÐ°Ð½Ð½Ð¾Ð¼ Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð¾Ð¼ ÑÐ¾Ð¾Ð±ÑÐµÐ½Ð¸Ð¸ ÑÐ±Ð¾ÑÐ½ÑÑ Ð³ÑÑÐ·Ð¾Ð² Ð´Ð»Ñ ÐÐÐ Â«ÐÐÐ-Ð­ÐºÑÐ¿ÑÐµÑÑÂ»
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Planning of transportation in the mixed international traffic of grouped goods for LLC Â«PBK-ExpressÂ»
Creators: name: ÐÐ¾Ð¸ÑÐµÐµÐ½ÐºÐ¾, ÐÑÐ´Ð¼Ð¸Ð»Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: ÑÐ±Ð¾ÑÐ½ÑÐµ Ð³ÑÑÐ·Ñ
ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ¸ÑÐ¾Ð²ÐºÐ°
ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½Ð°Ñ Ð»Ð¾Ð³Ð¸ÑÑÐ¸ÐºÐ°
ÐºÑÐ¸ÑÐµÑÐ¸Ð¹ ÐÐ°Ð»ÑÐ´Ð°
ÐºÑÐ¸ÑÐµÑÐ¸Ð¹ ÐÑÑÐ²Ð¸ÑÐ°
ÐºÑÐ¸ÑÐµÑÐ¸Ð¹ ÐÐ°Ð¿Ð»Ð°ÑÐ°
ÐºÑÐ¸ÑÐµÑÐ¸Ð¹ Ð¡ÑÐ²Ð¸Ð´Ð¶Ð°
grouped goods
transportation
transport logistics
Wald criterion
Hurwitz criterion
Laplace criterion
Savage criterion

description: Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ - Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ° ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ¸ÑÐ¾Ð²ÐºÐ¸ ÑÐ±Ð¾ÑÐ½ÑÑ Ð³ÑÑÐ·Ð¾Ð² Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÐÐ-Ð­ÐºÑÐ¿ÑÐµÑÑÂ» Ð¸ ÑÐ°ÑÑÐµÑ Ð¼Ð°ÑÑÑÑÑÐ°. Ð Ð°Ð±Ð¾ÑÐ° Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð° Ð½Ð° Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð°Ñ ÐÐÐ Â«ÐÐÐ-Ð­ÐºÑÐ¿ÑÐµÑÑÂ» ÐÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ: ÑÐºÑÐ¿ÐµÑÑÐ½Ð¾Ðµ Ð¾ÑÐµÐ½Ð¸Ð²Ð°Ð½Ð¸Ðµ, ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ, Ð¾ÑÐµÐ½ÐºÐ° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ°. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ°Ð±Ð¾ÑÑ: - Ð¸Ð·ÑÑÐµÐ½Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð¾ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ Ð¸ Ð²Ð¸Ð´Ð°Ñ Ð¿ÐµÑÐµÐ²Ð¾Ð·Ð¾Ðº; - Ð¾Ð¿Ð¸ÑÐ°Ð½Ñ Ð¿ÑÐµÐ¸Ð¼ÑÑÐµÑÑÐ²Ð° Ð¸ ÑÐ¸ÑÐºÐ¸ ÑÐ±Ð¾ÑÐ½ÑÑ Ð³ÑÑÐ·Ð¾Ð².; - Ð¿Ð¾ÑÑÐ¸ÑÐ°Ð½Ñ ÐºÑÐ¸ÑÐµÑÐ¸Ð¸ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹ Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ Ð½ÐµÐ¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÐÐ°Ð¿Ð»Ð°ÑÐ°, ÐÑÑÐ²Ð¸ÑÐ°, ÐÐ°Ð»ÑÐ´Ð° Ð¸ Ð¡ÑÐ²Ð¸Ð´Ð¶Ð°. ÐÐ° Ð¸Ñ Ð¾ÑÐ½Ð¾Ð²Ðµ Ð±ÑÐ» Ð²ÑÐ±ÑÐ°Ð½ Ð²Ð°ÑÐ¸Ð°Ð½Ñ Ð¼Ð°ÑÑÑÑÑÐ°. ÐÐ±Ð»Ð°ÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² ÐÐÐ  â ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½Ð°Ñ Ð»Ð¾Ð³Ð¸ÑÑÐ¸ÐºÐ°. ÐÑÐ²Ð¾Ð´Ñ. ÐÐ°Ð´Ð°ÑÐ¸ ÐÐÐ  ÑÐµÑÐµÐ½Ñ, ÑÐµÐ»Ñ Ð´Ð¾ÑÑÐ¸Ð³Ð½ÑÑÐ°, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð° Ð¾Ð±Ð»Ð°ÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð².
description: The aim of the graduate qualification work is to study the process of transportation of grouped goods using the example of LLC âPBK-Expressâ. The work has been carried out on the materials of: LLC âPBK-Expressâ. Research methods used: expert assessment, economic justification, project efficiency assessment. The main results of the graduate qualification work: - explored theoretical concepts of classification and modes of transport; - the advantages and risks of grouped goods are described; - Laplace, Hurwitz, Wald and Savage decision criteria under uncertainty were calculated. Based on these, a route option was selected. The areas of the graduate qualification work results application â transport logistics. Conclusions of graduate qualification work. Tasks have been solved, aim has been achieved, the areas of the results application have been determined.
Additional file 4 of Improved gut microbiota features after the resolution of SARS‑CoV‑2 infection
Creators: name: De Maio, Flavio
name: Ianiro, Gianluca
name: Coppola, Gaetano
name: Santopaolo, Francesco
name: Abbate, Valeria
name: Bianco, Delia Mercedes
name: Del Zompo, Fabio
name: De Matteis, Giuseppe
name: Leo, Massimo
name: Nesci, Antonio
name: Nicoletti, Alberto
name: Pompili, Maurizio
name: Cammarota, Giovanni
name: Posteraro, Brunella
name: Sanguinetti, Maurizio
name: Gasbarrini, Antonio
name: Ponziani, Francesca Romana
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: 60506 Virology
subject: Computational Biology
subject: Cardiology

description: Additional file 4. Supplementary methods.
Hyperinsulinemia and insulin receptor signaling in pancreatic cancer development
Creators: name: Zhang, Anni
Publisher: name: University of British Columbia
Year: 2022

description: Pancreatic ductal adenocarcinoma (PDAC) is the 3rd leading cause of cancer death in Canada and its incidence is increasing, largely driven by the expanding epidemics of PDAC risk factors including obesity and type 2 diabetes (T2D). Hyperinsulinemia is a cardinal feature of obesity and T2D, and is associated with increased PDAC incidence and mortality. Despite epidemiological data linking hyperinsulinemia to PDAC, there was no direct in vivo evidence of a causal role for endogenous insulin in any cancer type before this work. We studied how reduced insulin production or local insulin action affected the development of pancreatic intraepithelial neoplasia (PanIN) precursor lesions in Ptf1aCreER;KrasLSL-G12D mice. We first generated Ptf1aCreER;KrasLSL-G12D;Ins1+/+;Ins2-/- control and Ptf1aCreER;KrasLSL-G12D;Ins1+/-;Ins2-/- experimental mice. We found high fat diet (HFD)-induced hyperinsulinemia was modestly reduced in experimental mice without affecting glucose homeostasis. Genetically reduced insulin production resulted in ~50% suppression of PanIN. However, in this study, only female mice remained normoglycemic and only the gene dosage of rodent-specific Ins1 alleles was tested. Therefore, we then generated Ptf1aCreER;KrasLSL-G12D;Ins1-/-;Ins2+/+ control and Ptf1aCreER;KrasLSL-G12D;Ins1-/-;Ins2+/- experimental mice. Mice with reduced insulin production tended to develop fewer PanIN and acinar-to-ductal metaplasia (ADM) lesions. Using single-cell transcriptomics, we found hyperinsulinemia modulated pathways associated with protein translation, MAPK/ERK signaling and PI3K/AKT/mTOR signaling, which were changed in epithelial cells and subsets of immune cells. Finally, we examined whether hyperinsulinemia contributed to PDAC development directly through insulin receptor (INSR) signaling in KrasG12D carrying pancreatic acinar cells. We generated Ptf1aCreER;LSL-KrasG12D;nTnG mice with an Insrwt/wt, Insrwt/f, or Insrf/f genotype to reduce insulin receptor mRNA by 0%, 50%, or 100% in acinar cells. Loss of insulin receptors from acinar cells did not significantly influence body weight, fasting glucose, or insulin levels. Compared to mice with wild-type INSR expression in acinar cells, mice lacking INSR had a 2.7-fold and 5.3-fold significant reduction in PanIN plus tumor area in males and females, respectively. Collectively, these results indicate that hyperinsulinemia and INSR signaling in acinar cells are important for the early stages of pancreatic cancer. Insulin-lowering interventions such as lifestyle management and therapies targeting insulin receptor signaling may be beneficial in preventing and/or treating pancreatic cancer.
Investigating a sample of strong cool core, highly-luminous clusters with radiatively-inefficient nuclei
Creators: name: Hlavacek-Larrondo, J.
name: Fabian, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a study of strong cool core, highly-luminous (most with L_x > 10^(45) erg/s), clusters of galaxies in which the mean jet power of the central active galactic nucleus must be very high yet no central point X-ray source is detected. Using the unique spatial resolution of Chandra, a sample of 13 clusters is analysed, including A1835, A2204, and one of the most massive cool core clusters, RXCJ1504.1-0248. All of the central galaxies host a radio source, indicating an active nucleus, and no obvious X-ray point source. For all clusters in the sample, the nucleus has an X-ray bolometric luminosity below 2 per cent of that of the entire cluster. Most have a nucleus 2 - 10 keV X-ray luminosity less than about 10^(42) erg/s. We investigate how these clusters can have such strong X-ray luminosities, short radiative cooling-times of the inner intracluster gas requiring strong energy feedback to counterbalance that cooling, and yet have such radiatively-inefficient cores. If the central black holes have masses ~10^9M_sol then the power exceeds one per cent of the Eddington luminosity, and they are expected to be radiatively-efficient. Only if they are ultramassive (M_BH > 10^(10)M_sol), would their behaviour resemble that of lower mass accreting black holes. Our study focuses on deriving the nucleus X-ray properties of the clusters as defined in the above question, while briefly addressing possible solutions.
description: Accepted for publication in MNRAS, 10 pages, 3 figures, 1 Table
Biological soil crusts decrease infiltration but increase erosion resistance in a human-disturbed tropical dry forest
Creators: name: Szyja, Michelle
name: Felde, Vincent J. M. N. L.
name: Lückel, Sara
name: Tabarelli, Marcelo
name: Leal, Inara R.
name: Büdel, Burkhard
name: Wirth, Rainer
Publisher: name: Lausanne : Frontiers Media
Year: 2023
Subjects: subject: biological soil crust
subject: tropical dry forest
subject: water infiltration and sorptivity
subject: aggregate stability
subject: regeneration
subject: ecosystem services
subject: ecosystem engineer
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Under continuous human disturbance, regeneration is the basis for biodiversity persistence and ecosystem service provision. In tropical dry forests, edaphic ecosystem engineering by biological soil crusts (biocrusts) could impact regeneration by influencing erosion control and soil water and nutrient fluxes, which impact landscape hydrology, geomorphology, and ecosystem functioning. This study investigated the effect of cyanobacteria-dominated biocrusts on water infiltration and aggregate stability in a human-modified landscape of the Caatinga dry forest (NE Brazil), a system characterized by high levels of forest degradation and increasing aridity. By trapping dust and swelling of cyanobacterial filaments, biocrusts can seal soil surfaces and slow down infiltration, which potentially induces erosion. To quantify hydraulic properties and erosion control, we used minidisc-infiltrometry, raindrop-simulation, and wet sieving at two sites with contrasting disturbance levels: an active cashew plantation and an abandoned field experiencing forest regeneration, both characterized by sandy soils. Under disturbance, biocrusts had a stronger negative impact on infiltration (reduction by 42% vs. 37% during regeneration), although biocrusts under regenerating conditions had the lowest absolute sorptivity (0.042 ± 0.02 cm s−1/2) and unsaturated hydraulic conductivity (0.0015 ± 0.0008 cm s−1), with a doubled water repellency. Biocrusts provided high soil aggregate stability although stability increased considerably with progression of biocrust succession (raindrop simulation disturbed: 0.19 ± 0.22 J vs. regenerating: 0.54 ± 0.22 J). The formation of stable aggregates by early successional biocrusts on sandy soils suggests protection of dry forest soils even on the worst land use/soil degradation scenario with a high soil erosion risk. Our results confirm that biocrusts covering bare interspaces between vascular plants in human-modified landscapes play an important role in surface water availability and erosion control. Biocrusts have the potential to reduce land degradation, but their associated ecosystem services like erosion protection, can be impaired by disturbance. Considering an average biocrust coverage of 8.1% of the Caatinga landscapes, further research should aim to quantify the contribution of biocrusts to forest recovery to fully understand the role they play in the functioning of this poorly explored ecosystem.