cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identification and characterization of flavonoids compounds in cassava leaves (Manihot esculenta Crantz) by HPLC/FTICR-MS
Creators: name: Tao, Haiteng
name: Cui, Bo
name: Zhang, Hongxia
name: El-Din Bekhit, Alaa
name: Lu, Feijie
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: Cassava (Manihot esculenta, Grantz) leaves are known for their pharmacological and nutraceutical properties, but the extraction of active compounds in CL has not been optimized yet. In this study, the optimal parameters for the extraction of flavonoids from cassava leaves were determined using a Taguchi L9 orthogonal array design. The extraction variables included: concentration of ethanol, temperature, the solid: liquid ratio and the extraction time. Optimum extraction conditions were 50% ethanol at 50°C for 4 h at a solid: liquid ratio of 1:40. The total flavonoids obtained under these conditions were 877.7 mg/100 g extract and rutin content was 622 mg/100 g as determined by HPLC-UV. Seven flavonoid compounds were identified by HPLC-FTICR-MS analysis. The relative amount of each compound in the extract was 0.96% of clovin, 4.81% of myricetin-3-O-rutinoside, 1.25% of robinin, 58.89% of rutin, 2.51% of hyperoside, 29.31% of nicotiflorin, and 2.28% of narcissin of the total flavonoids. Therefore, CL has the potential to be explored as the medicinal foods or therapeutics for improving human health.
Second order formalism in Poincare gauge theory
Creators: name: Leclerc, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Changing the set of independent variables of Poincare gauge theory and considering, in a manner similar to the second order formalism of general relativity, the Riemannian part of the Lorentz connection as function of the tetrad field, we construct theories that do not contain second or higher order derivatives in the field variables, possess a full general relativity limit in the absence of spinning matter fields, and allow for propagating torsion fields in the general case. A concrete model is discussed and the field equations are reduced by means of a Yasskin type ansatz to a conventional Einstein-Proca system. Approximate solutions describing the exterior of a spin polarized neutron star are prsented and the possibility of an experimental detection of the torsion fields is briefly discussed.
description: final version, to appear in IJMPD
Ferramenta da Terapia Narrativa: Fotografia Terapêutica
Creators: name: Brandl, Edenilson
Publisher: name: Zenodo
Year: 2024
Subjects: Ferramenta da Terapia Narrativa
Terapia Narrativa
Fotografia Terapêutica
Enciclopédia da Conscienciologia

description: Definologia: A Fotografia Terapêutica é uma ferramenta da Terapia Narrativa que utiliza o processo de tirar fotos para representar diferentes aspectos da vida e história do paciente, explorando essas imagens durante o processo terapêutico com o objetivo de acessar, expressar e elaborar conteúdos emocionais e cognitivos relevantes.
Ab initio studies of carbon dioxide affinity to carbon compounds and minerals
Creators: name: Wlazło, Mateusz
name: Siklitskaya, Alexandra
name: Majewski, Jacek A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have performed quantum chemical computational studies to determine carbon dioxide affinity to carbon compounds and minerals, which could be present in shales. These studies shed light on the microscopic mechanisms of the possible carbon oxide sequestration processes. Our studies reveal that the carbon oxide can be adsorbed to various forms of carbon structures and also minerals such as periclase or illite. We find out that the strongest affinity of carbon oxide towards carbon structures occurs when the carbon structures exhibit $sp^3$ bonds.
description: 7 pages, 4 figures; European Geosciences Union General Assembly 2017, submitted to Energy Procedia
Lateglacial to Holocene palaeoenvironmental change in the Muck Deep, offshore western Scotland
Creators: name: Arosio, Riccardo
name: Howe, John A.
Publisher: name: Geological Society of London
Year: 2018
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Seismic unit classification in the Muck Deep, summary of the Muck Core Units described, core photos showing details of the sedimentary structures in cores 729 and 731 and Correlation between core 731 and MD6.
The Classical Limit of Quantum Mechanics and the Fejer Sum of the Fourier Series Expansion of a Classical Quantity
Creators: name: Liu, Q. H.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In quantum mechanics, the expectation value of a quantity on a quantum state, provided that the state itself gives in the classical limit a motion of a particle in a definite path, in classical limit goes over to Fourier series form of the classical quantity. In contrast to this widely accepted point of view, a rigorous calculation shows that the expectation value on such a state in classical limit exactly gives the Fejér's arithmetic mean of the partial sums of the Fourier series.
Escape time, relaxation and sticky states of a softened Henon-Heiles model: low-frequency vibrational modes effects
Creators: name: Toledo-Marin, J. Quetzalcoatl
name: Naumis, Gerardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Here we study the relaxation of a chain consisting of 3 masses joined by non-linear springs and periodic conditions when the stiffness is weakened. This system, when expressed in their normal coordinates, yields a softened Henon-Heiles system. By reducing the stiffness of one low-frequency vibrational mode, a faster relaxation is enabeled. This is due to a reduction of the energy barrier heights along the softened normal mode as well as for a widening of the opening channels of the energy landscape in configurational space. The relaxation is for the most part exponential, and can be explained by a simple flux equation. Yet, for some initial conditions the relaxation follows as a power law and, and in many cases, there is a regime change from exponential to power law decay. We pin point the initial conditions for the power law decay, finding two regions of sticky states. For such states, quasiperiodic orbits are found since almost for all components of the initial momentum orientation, the system is trapped inside two pockets of configurational space. The softened Henon- Heiles model presented here is intended as the simplest model in order to understand the interplay of rigidity, non-linear interactions and relaxation for non-equilibrium systems like glass-forming melts or soft-matter.
description: 11 + 5 (SM) pages. 11 + 4(SM) figures
Towards the ab initio based theory of the phase transformations in iron and steel
Creators: name: Razumov, I. K.
name: Gornostyrev, Yu. N.
name: Katsnelson, M. I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Despite of the appearance of numerous new materials, the iron based alloys and steels continue to play an essential role in modern technology. The properties of a steel are determined by its structural state (ferrite, cementite, pearlite, bainite, martensite, and their combination) that is formed under thermal treatment as a result of the shear lattice reconstruction "gamma" (fcc) -> "alpha" (bcc) and carbon diffusion redistribution. We present a review on a recent progress in the development of a quantitative theory of the phase transformations and microstructure formation in steel that is based on an ab initio parameterization of the Ginzburg-Landau free energy functional. The results of computer modeling describe the regular change of transformation scenario under cooling from ferritic (nucleation and diffusion-controlled growth of the "alpha" phase to martensitic (the shear lattice instability "gamma" -> "alpha"). It has been shown that the increase in short-range magnetic order with decreasing the temperature plays a key role in the change of transformation scenarios. Phase-field modeling in the framework of a discussed approach demonstrates the typical transformation patterns.
Additional file 1: of Molecular cloning and characterization of the endothelin 3 gene in black bone sheep
Creators: name: Darwish, Hesham
name: Zhang, Yuanyuan
name: Cui, Kai
name: Yang, Zu
name: Han, Deping
name: Dong, Xianggui
name: Mao, Huaming
name: Deng, Weidong
name: Deng, Xuemei
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Computational Biology

description: Figure S1. Alignments of EDN3 protein with different species. Figure S2. Prediction secondary structure of EDN3 protein. t, refers to Beta turn; c, to Random coil; h, to Alpha helices; e, to Extended strand. (DOCX 13238 kb)
The Lonfearn Member, Lealt Shale Formation, (Middle Jurassic) of the Inner Hebrides, Scotland
Creators: name: Hudson, John D.
name: Wakefield, Matthew I.
Publisher: name: Geological Society of London
Year: 2018
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Detailed measured stratigraphical logs
Where Did the Gap Go? Reassessing the Long-Range Graph Benchmark
Creators: name: Tönshoff, Jan Martin
name: Ritzert, Martin
name: Rosenbluth, Eran
name: Grohe, Martin
Publisher: name: RWTH Aachen University
Year: 2023

description: 2. Learning on Graphs Conference, LoG 2023, online, 27 Nov 2023 - 30 Nov 2023; 9 Seiten (2023). doi:10.48550/arXiv.2309.00367
44Ti radioactivity in young supernova remnants: Cas A and SN 1987A
Creators: name: Motizuki, Yuko
name: Kumagai, Shiomi
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate radioactivity from the decay sequence of 44Ti in young supernova remnants (SNRs), Cassiopeia A (Cas A) and SN 1987A. It is shown by a linear analysis that ionization of 44Ti, a pure electron capture decay isotope, affects the radioactivity contradistinctively in these two SNRs: Ionization of 44Ti to H-like and He-like states enhances its present radioactivity in Cas A, while such high-ionization decreases its radioactivity in SN 1987A. We briefly discuss the enhancement factor of the present radioactivity of Cas A considering microscopic (atomic/nuclear) physics combined with a hydrodynamical SNR evolution model. For SN 1987A, we have obtained the initial 44Ti mass of (0.82-2.3) X 10^{-4} M_solar from our Monte-Carlo simulations. The resulting fluxes of gamma and hard X-rays emerged from the 44Ti decay are given for the current and future experiments.
description: Talk at the workshop "Astronomy with Radioactivities IV", Seeon, Germany, June 2003; 8 pages, to appear in New Astronomy Reviews
ALMA Detection of Bipolar Outflows: Evidence for Low Mass Star Formation within 1pc of Sgr A*
Creators: name: Yusef-Zadeh, F.
name: Wardle, M.
name: Kunneriath, D.
name: Royster, M.
name: Wootten, A.
name: Roberts, D. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of 11 bipolar outflows within a projected distance of 1pc from Sgr A* based on deep ALMA observations of $^{13}$CO, H30$α$ and SiO (5-4) lines with sub-arcsecond and $\sim1.3$ km/s, resolutions. These unambiguous signatures of young protostars manifest as approaching and receding lobes of dense gas swept up by the jets created during the formation and early evolution of stars. The lobe masses and momentum transfer rates are consistent with young protostellar outflows found throughout the disk of the Galaxy. The mean dynamical age of the outflow population is estimated to be $6.5^{+8.1}_{-3.6}\times10^3$ years. The rate of star formation is $\sim5\times10^{-4}$\msol\,yr$^{-1}$ assuming a mean stellar mass of $\sim0.3$ \msol. This discovery provides evidence that star formation is taking place within clouds surprisingly close to Sgr A*, perhaps due to events that compress the host cloud, creating condensations with sufficient self-gravity to resist tidal disruption by Sgr A*. Low-mass star formation over the past few billion years at this level would contribute significantly to the stellar mass budget in the central few pc of the Galaxy. The presence of many dense clumps of molecular material within 1pc of Sgr A* suggests that star formation could take place in the immediate vicinity of supermassive black holes in the nuclei of external galaxies
description: 17 pages, 4 figures
Quantum Roots in Geometry: I
Creators: name: Wanas, M. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the present work, it is shown that the geometerization philosophy has not been exhausted. Some quantum roots are already built in non-symmetric geometries. Path equations in such geometries give rise to spin-gravity interaction. Some experimental evidences (the results of the COW-experiment) indicate the existence of this interaction. It is shown that the new quantum path equations could account for the results of the COW-experiment. Large scale applications, of the new path equations, admitted by such geometries, give rise to tests for the existence of this interaction on the astrophysical and cosmological scales. As a byproduct, it is shown that the quantum roots appeared explicitly, in the path equations, can be diffused in the whole geometry using a parameterization scheme.
description: 20 pages, 1 figure, talk at XXV-International Workshop on Fundamental Problems of High Energy Physics and Field Theory, held 25-28 June 2002, Protvino, Russia
Impact of missing flow on active inundation areas and transformation of parafluvial wetlands in Punarbhaba–Tangon river basin of Indo-Bangladesh
Creators: name: Swades Pal
name: Talukdar, Swapan
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Punarbhaba river of Indo-Bangladesh has experienced hydro-ecological alteration after installation of Komardanga dam in 1992 and consequently wetland and inundation areas have undergone into transformation. The present work intends to explore the impact of flow attenuation on contemporary and upcoming flood extent and flood plain wetlands. In post-dam condition, average and maximum flows are attenuated by 36 and 41%, respectively, and as a result the active flood prone area is squeezed considerably by 39.72%. Average flood water depth is also reduced by 37.87% (4.45metre) after flow modification. Due to shrinkages of flood prone areas, wetland area is also reduced from 215.70 to 90.40 km2 and larger part of the present wetland area is under stress and critical state. Predicted flood prone areas in next 25 years will be 328.91 km2 and consequently 65.63 km2 wetland areas may further be under hydro-ecological threats. Release of ecological flow is essential to restore and preserve the wetland.
Persistence of discrimination: revisiting Axtell, Epstein and Young
Creators: name: Weisbuch, Gérard
Publisher: name: arXiv
Year: 2017
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We reformulate an earlier model of the "Emergence of classes..." proposed by Axtell etal. using more elaborate cognitive processes allowing a statistical physics approach. The thorough analysis of the phase space and of the basins of attraction leads to a reconsideration of the previous social interpretations: our model predicts the reinforcement of discrimination biases and their long term stability rather than the emergence of classes.
description: 21 pages, 7 figures
The structure of contact binaries
Creators: name: Kaehler, H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In radiative layers of rotating stars the luminosity carried by circulation currents through a surface of constant entropy (circulation luminosity) is shown to be positive. The corresponding decrease in the temperature gradient is important in the secondary of contact binaries. This result removes the deadlock in the theory of contact binaries. The resulting treatment of contact binaries is investigated, assuming thermal equilibrium. If the circulation luminosity is adjusted to give a prescribed temperature difference between the components, details turn out to be unimportant. The temperature difference is bound to be positive. The fractional extent of radiative regions is larger in the secondary than in the primary. In the course of evolution the period increases and the mass ratio decreases. A survey of unevolved and evolved contact configurations is presented. Observational tests are passed. In stable systems the degree of contact is small. Stable systems in the period-colour diagram, unevolved and evolved, cover the strip of observed systems. Lower limits for period and effective temperature, compatible with the observed limits, are caused by the requirement of thermal stability. Stable systems with mass ratios very close to unity are possible, in accordance with recent observations. These results support the assumption of thermal equilibrium as well as the treatment of the stability problem. Models for individual observed systems are well-determined and can be used to calibrate the efficiency of the energy transfer between the components and to determine metallicity and age. The results show that evolutionary effects are important and that the efficiency is very small.
description: 17 pages, 28 figures, accepted by A&A
Effect of sandblasting on the surface roughness and residual stress of 3Y-TZP (zirconia)
Creators: name: Finger, Christin
name: Stiesch, Meike
name: Eisenburger, Michael
name: Breidenstein, Bernd
name: Busemann, Sarah
name: Greuling, Andreas
Publisher: name: [Cham] : Springer International Publishing
Year: 2020
Subjects: subject: Dental ceramics
subject: Residual stress
subject: Sandblasting
subject: Surface roughness
subject: Zirconia
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: A defined surface roughness is important for the adhesive bonding of veneering ceramic to zirconia frameworks. Thus, we investigated the effects that sandblasting has upon the surface roughness and residual stress of zirconia. So as to achieve well-defined blasting parameters and also generate highly reproducible results; a custom-made, automated sandblasting machine was constructed (based on a 3D-printer construction kit). Thirty-two samples (measuring 30 mm × 35 mm × 0.2 mm) were cut from densely sintered 3Y-TZP blanks and then ground with a 45 µm grinding disc. After undergoing regeneration firing, the samples were sandblasted with varying working parameters: blasting angle (45°, 60° and 90°); blasting pressure (2 bar, 4 bar and 6 bar); and working distance (0.5 cm, 1.0 cm and 1.5 cm). The sandblasting path was chosen so as to create samples with an even surface roughness. Changes in blasting pressure resulted in the greatest changes in the surface roughness, the highest surface roughness values were achieved with sandblastings perpendicular to the sample surface. Furthermore, a correlation was found between the mean surface roughness and the residual stress.
Mortality and its predictors in patients with rheumatoid arthritis: a Danish population-based inception cohort study
Creators: name: JK Pedersen
name: R Holst
name: J Primdahl
name: AJ Svendsen
name: K Hørslev-Petersen
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Computational Biology

description: Objectives: To investigate mortality and its predictors in a retrospectively defined population-based rheumatoid arthritis (RA) inception cohort Method: We included patients ascertained with incident RA from a region in the southern part of Denmark from 1995 to 2002. All patients fulfilled the 1987 American College of Rheumatology criteria for RA. The patients were followed from RA classification until death, emigration, or end of follow-up on 31 December 2013. We used personal record linkage with national public registers to obtain information on education, employment, cohabitation, comorbidity, and vital status. Results: The cohort comprised 509 patients, of whom 200 (39%) died during 6079 person-years. The most frequent underlying causes of death were cardiovascular disease (34%), neoplasms (26%), and respiratory disease (12%). In rheumatoid factor (RF)-positive males, the standardized mortality ratio (95% confidence interval) from all causes was 1.47 (1.15–1.88), from cardiovascular disease 1.63 (1.09–2.46), from respiratory disease 2.03 (1.06–3.90), and from neoplasms 2.26 (1.02–5.03) in the age group < 70 years, and 2.45 (1.23–4.90) in the age group > 79 years. On applying Cox models after multiple imputations by chained equations, we found that RF modified the effect of age. Employment status, comorbidity, and gender were independent baseline predictors of subsequent mortality. Conclusion: In this cohort, significant excess mortality was confined to RF-positive males. The effect of age was modified by RF, and employment status and comorbidity were independent predictors of mortality.
Building the Data Stewardship Profession at UCL
Creators: name: Donnelly, Martin
name: Abdelrazek, Mahmoud
name: Buntic, Katie
Publisher: name: Zenodo
Year: 2024
Subjects: Trust and transparency in people
Trust in skills acquisition
Skills needed for researchers and data stewards to make their practices transparent
Trust and transparency in people, How do we know researchers and data stewards have the skills they need?
Data stewardship
Data management
Data archiving
Electronic Research Notebooks

description: Advanced Research Computing (ARC) at UCL (University College London) is committed to the professionalisation and security of its staff. Alongside Data Scientists and Research Software Engineers, Data Stewards are one of ARC's core "job families". This poster outlines our services, some of the main projects we're currently involved in, and the secure data governance infrastructure that underpins our work.
Rapid Low-Dimensional Li+Ion Hopping Processes in Synthetic Hectorite-Type Li0.5[Mg2.5Li0.5]Si4O10F2
Creators: name: Hiebl, Caroline
name: Loch, Patrick
name: Brinek, Marina
name: Gombotz, Maria
name: Gadermaier, Bernhard
name: Heitjans, Paul
name: Breu, Josef
name: Wilkening, H. Martin R.
Publisher: name: Washington, DC : American Chemical Society
Year: 2020
Subjects: subject: Activation energy
subject: Electron spin resonance spectroscopy
subject: Ionic conduction in solids
subject: Ionic conductivity
subject: Ions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Understanding the origins of fast ion transport in solids is important to develop new ionic conductors for batteries and sensors. Nature offers a rich assortment of rather inspiring structures to elucidate these origins. In particular, layer-structured materials are prone to show facile Li+ transport along their inner surfaces. Here, synthetic hectorite-type Li0.5[Mg2.5Li0.5]Si4O10F2, being a phyllosilicate, served as a model substance to investigate Li+ translational ion dynamics by both broadband conductivity spectroscopy and diffusion-induced 7Li nuclear magnetic resonance (NMR) spin-lattice relaxation experiments. It turned out that conductivity spectroscopy, electric modulus data, and NMR are indeed able to detect a rapid 2D Li+ exchange process governed by an activation energy as low as 0.35 eV. At room temperature, the bulk conductivity turned out to be in the order of 0.1 mS cm-1. Thus, the silicate represents a promising starting point for further improvements by crystal chemical engineering. To the best of our knowledge, such a high Li+ ionic conductivity has not been observed for any silicate yet.
Quantized Black Holes, Their Spectrum and Radiation
Creators: name: Khriplovich, I. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Under quite natural general assumptions, the following results are obtained. The maximum entropy of a quantized surface is demonstrated to be proportional to the surface area in the classical limit. The general structure of the horizon spectrum is found. The discrete spectrum of thermal radiation of a black hole Under quite natural general assumptions, the following results are obtained. The maximum entropy of a quantized surface is demonstrated to be proportional to the surface area in the classical limit. The general structure of the horizon spectrum is found. The discrete spectrum of thermal radiation of a black hole fits the Wien profile. The natural widths of the lines are much smaller than the distances between them. The total intensity of the thermal radiation is estimated. In the special case of loop quantum gravity, the value of the Barbero -- Immirzi parameter is found. Different values for this parameter, obtained under additional assumption that the horizon is described by a U(1) Chern -- Simons theory, are demonstrated to be in conflict with the firmly established holographic bound.
description: 15 pages, content of few talks given at conferences this summer
A simple proof of the unconditional security of relativistic quantum cryptography
Creators: name: Molotkov, S. N.
name: Nazin, S. S.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A simple proof of the unconditional security of a relativistic quantum cryptosystem based on orthogonal states is proposed. Restrictions imposed by special relativity allow to substantially simplify the proof compared with the non-relativistic cryptosystems involving non-orthogonal states. Important for the proposed protocol is the spatio-temporal structure of the quantum states which is actually ignored in the non-relativistic protocols employing only the structure of the state space of the information carriers. As a consequence, the simplification arises because of the inefficiency of collective measurements which constitute the major problem in the non-relativistic case.
description: 11 pages, 1 figure (typos in Eqs. 2, 7 and 8 are corrected)
Characterization of the K2-18 multi-planetary system with HARPS: A habitable zone super-Earth and discovery of a second, warm super-Earth on a non-coplanar orbit
Creators: name: Cloutier, R.
name: Astudillo-Defru, N.
name: Doyon, R.
name: Bonfils, X.
name: Almenara, J. M.
name: Benneke, B.
name: Bouchy, F.
name: Delfosse, X.
name: Ehrenreich, D.
name: Forveille, T.
name: Lovis, C.
name: Mayor, M.
name: Menou, K.
name: Murgas, F.
name: Pepe, F.
name: Rowe, J.
name: Santos, N. C.
name: Udry, S.
name: Wünsche, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The bright M dwarf K2-18 at 34 pc is known to host a transiting super-Earth-sized planet orbiting within the star's habitable zone; K2-18b. Given the superlative nature of this system for studying an exoplanetary atmosphere receiving similar levels of insolation as the Earth, we aim to characterize the planet's mass which is required to interpret atmospheric properties and infer the planet's bulk composition. We obtain precision radial velocity measurements with the HARPS spectrograph and couple those measurements with the K2 photometry to jointly model the observed radial velocity variation with planetary signals and a radial velocity jitter model based on Gaussian process regression. We measure the mass of K2-18b to be $8.0 \pm 1.9$ M$_{\oplus}$ with a bulk density of $3.7 \pm 0.9$ g/cm$^3$ which may correspond to a predominantly rocky planet with a significant gaseous envelope or an ocean planet with a water mass fraction $\gtrsim 50$%. We also find strong evidence for a second, warm super-Earth K2-18c at $\sim 9$ days with a semi-major axis 2.4 times smaller than the transiting K2-18b. After re-analyzing the available light curves of K2-18 we conclude that K2-18c is not detected in transit and therefore likely has an orbit that is non-coplanar with K2-18b. A suite of dynamical integrations with varying simulated orbital eccentricities of the two planets are used to further constrain each planet's eccentricity posterior from which we measure $e_b < 0.43$ and $e_c < 0.47$ at 99% confidence. The discovery of the inner planet K2-18c further emphasizes the prevalence of multi-planet systems around M dwarfs. The characterization of the density of K2-18b reveals that the planet likely has a thick gaseous envelope which along with its proximity to the Solar system makes the K2-18 planetary system an interesting target for the atmospheric study of an exoplanet receiving Earth-like insolation.
description: 13 pages, 8 figures including 4 interactive figures best viewed in Adobe Acrobat. Submitted to Astronomy & Astrophysics. Comments welcome
Towards Responsible Generative AI Use in EU R&I Grants: A Self-Assessment Model and the path to a Governance Framework
Creators: name: Spyroglou, Odysseas
Publisher: name: Zenodo
Year: 2025
Subjects: Generative AI
Research and Innovation
R&I
AI Governance
Horizon Europe
Research Integrity
Ethical AI

description: This paper explores the transformative impact of Generative AI on EU Research and Innovation (R&I) grant preparation processes. It introduces a Self-Assessment Model aimed at promoting responsible AI use while paving the way for a Governance Framework. Drawing on insights from recent surveys and guidelines, the study analyzes the widespread adoption of Generative AI tools, highlighting their benefits and challenges. With 70% of surveyed stakeholders already utilizing these tools, issues such as transparency, accountability, originality, and institutional guidance are brought to the forefront. The paper seeks to address the current lack of standardized mechanisms for AI disclosure, proposing actionable strategies to safeguard research integrity without hindering innovation.
N=4 supersymmetric Calogero-Sutherland models
Creators: name: Krivonos, Sergey
name: Lechtenfeld, Olaf
Publisher: name: Ridge, NY : American Physical Society
Year: 2020
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Starting from the Hamiltonian formulation of supersymmetric Calogero models associated with the classical An, Bn, Cn and Dn series we construct the N=2 and N=4 supersymmetric extensions of their hyperbolic/trigonometric Calogero-Sutherland cousins. The bosonic core of these models are the standard Calogero-Sutherland hyperbolic/trigonometric systems.
First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy
Creators: name: Cayrel, R.
name: Depagne, E.
name: Spite, M.
name: Hill, V.
name: Spite, F.
name: Francois, P.
name: Plez, B.
name: Beers, T.
name: Primas, F.
name: Andersen, J.
name: Barbuy, B.
name: Bonifacio, P.
name: Molaro, P.
name: Nordstrom, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the framework of an ESO Large Programme high quality spectra of 70 very metal-poor dwarfs and giants were obtained with the VLT-UVES combination. This paper reports the detailed analyses of the 35 giants of the sample. At the exception of a few template stars, all the targets are from the H&K Beers et al. survey. No less than 22 stars have [Fe/H] below -3.0. The imprint of yields of the first galactic or protogalactic supernovae is sampled in the photospheres of these stars. If [C/Fe], [Na/Fe] and [Al/Fe] show a spread significantly above the observational scatter, several abundance ratios present an amazing low scatter when plotted against [Fe/H], as [Cr/Fe] but also odd elements, as [K/Fe] or [Sc/Fe]. The abundance of oxygen has been derived from the [O I] line for 16 of these giants, in spite of the extreme weakness of the line. No significant slope with [Fe/H] is found. Similar plots have been made using Mg instead of Fe as reference element. With Mg, no clear trend with metallicity is obvious below [Mg/H]=-3., except perhaps for [Zn/Mg]. It is contemplated that the mild slope found in the very low scatter diagram [Cr/Fe] versus [Fe/H] might be spurious due for example to the LTE approximation plus use of 1-D models. This would relax the absence of scatter in the dilution of the SN ejectas within the ambient medium, as needed if [Fe/H] is a well defined function of [Cr/Fe].
description: 29 pages, 15 figures, 11 tables, LateX, aa.cls macros, accepted in A&A
Prepreg tack: A review of mechanisms, measurement, and manufacturing implication
Creators: name: Budelmann, Dennis
name: Schmidt, Carsten
name: Meiners, Dieter
Publisher: name: Brookfield, Conn. : Society of Plastic Engineers
Year: 2020
Subjects: subject: adhesion
subject: cohesion
subject: composites
subject: interfaces
subject: processing
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: The stickiness of prepregs (tack) is considered a decisive material property for the success of high-quality composite manufacturing by automated lay-up processes such as automated fiber placement (AFP) or automated tape laying (ATL). Adverse control of prepreg tack can easily result in laminate defects or machine breakdown, which are highly undesirable considering the tremendous machinery and material costs of these processes. Prepreg tack is governed by a complex interaction of adhesive and cohesive phenomena that are influenced by machine and environmental parameters of the production process as well as by intrinsic properties of the prepreg material itself. This review aims at providing a condensed insight into the current state of research on prepreg tack. Therefore, experimental studies including the discussion of utilized tack measurement methods as well as model approaches to prepreg tack are reviewed. The findings are discussed against the background of fundamental mechanisms, the strong interdependency of influencing parameters and the challenge of translating measured tack data into an enhanced AFP/ATL process stability by process adjustment.
An Elliptic Triptych
Creators: name: Troost, Jan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We clarify three aspects of non-compact elliptic genera. Firstly, we give a path integral derivation of the elliptic genus of the cigar conformal field theory from its non-linear sigma-model description. The result is a manifestly modular sum over a lattice. Secondly, we discuss supersymmetric quantum mechanics with a continuous spectrum. We regulate the theory and analyze the dependence on the temperature of the trace weighted by the fermion number. The dependence is dictated by the regulator. From a detailed analysis of the dependence on the infrared boundary conditions, we argue that in non-compact elliptic genera right-moving supersymmetry combined with modular covariance is anomalous. Thirdly, we further clarify the relation between the flat space elliptic genus and the infinite level limit of the cigar elliptic genus.
description: 22 pages
Gravitational Waves from Compact Sources
Creators: name: Kokkotas, Kostas D.
name: Stergioulas, Nikolaos
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review sources of high-frequency gravitational waves, summarizing our current understanding of emission mechanisms, expected amplitudes and event rates. The most promising sources are gravitational collapse (formation of black holes or neutron stars) and subsequent ringing of the compact star, secular or dynamical rotational instabilities and high-mass compact objects formed through the merger of binary neutron stars. Significant and unique information for the various stages of the collapse, the structure of protoneutron stars and the high density equation of state of compact objects can be drawn from careful study of gravitational wave signals.
description: 22 pages, Proceedings of the 5th International Workshop "New Worlds in Astroparticle Physics", Faro, Portugal, 8-10 January 2005
Ent-abietane diterpenoids from Suregada zanzibariensis Baill. (Euphorbiaceae), their cytotoxic and anticancer properties
Creators: name: Mandisa Mangisa
name: Vuyelwa J. Tembu
name: Fouche, Gerda
name: Rudzani Nthambeleni
name: Xolani Peter
name: Langat, Moses K.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: 60506 Virology

description: The stem bark extract of Suregada zanzibariensis afforded a previously undescribed ent-abietane diterpenoid trivially named mangiolide (1) and a known jolkinolide B (2) via anticancer bioassay-guided fractionation. The CH2Cl2:MeOH extract of S. zanzibariensis was initially analysed for its anticancer properties against three cancer cell lines, renal (TK10), melanoma (UACC62), and breast (MCF7) and was found to be potent at low μg/mL ranges. Compound 1, 6α-acetoxy-14-keto-ent-abieta-7(8),13(15)-diene-16,12-olide (mangiolide) inhibited the growth of renal (TK10) with a GI50 of 0.02 μg/mL; a GI50 of 0.03 μg/mL for melanoma (UACC62) and a GI50 of 0.05 μg/mL for breast (MCF7) cancer cell lines. Compound 2, 8,13-diepoxy-13,15-ent-abietene-16,12-olide (jolkinolide B) inhibited the growth (GI50) of the cell lines at 3.31 μg/mL for renal (TK10), 0.94 μg/mL for melanoma (UACC62) and 2.99 μg/mL for the breast (MCF7). The structures were established on the basis of their spectroscopic analysis and the absolute stereostructures assigned using electronic circular dichroism (ECD).
Chemical variability in peralkaline magmas and magma reservoirs: insights from the Khaggiar lava flow, Pantelleria, Italy
Creators: name: Neave, David A.
Publisher: name: Berlin ; Heidelberg : Springer
Year: 2020
Subjects: subject: Chemical variability
subject: Crystal mush
subject: Magma mixing
subject: Pantellerite
subject: Peralkaline
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Silicic volcanoes are increasingly understood to be underlain by crystal-rich and vertically extensive magma reservoirs within which disequilibrium is widespread. Observations from ignimbrite deposits demonstrate that silicic magma reservoirs are often compartmentalised and compositionally stratified. However, it is currently unclear whether the small (i.e., < 0.1 km3 dense rock equivalent) eruptions that dominate activity at many volcanoes, and peralkaline volcanoes in particular, are fed from similarly complex magma reservoirs as their larger counterparts. Here I report petrographic and geochemical observations from the products of a small peralkaline eruption on Pantelleria, Italy, with the aims of unravelling peralkaline magma assembly processes and evaluating the complexity of reservoirs feeding small silicic eruptions. Matrix glass and whole-rock compositions from the Khaggiar lava flow and Cuddia Randazzo pumice cone reveal that erupted magmas were assembled from at least three distinct magma types stored within a compartmentalised magma reservoir: trachytes, less-evolved pantellerites and evolved pantellerites. Chemical variability in the Khaggiar lava flow was created by at least three distinct processes: the accumulation of evolved macrocrysts into evolved pantellerites; the injection of trachytic magmas into less evolved pantellerites; and the accumulation of relatively primitive macrocrysts into trachytic magmas. Macrocryst textures indicate that both trachytic and pantelleritic domains of the magma reservoir experienced numerous recharge events prior to the one that ultimately triggered eruption. Overall, magmas forming the Khaggiar lava flow and Cuddia Randazzo pumice cone appear to have been assembled in analogous ways to those erupted in much larger events. My observations are in good agreement with those from other peralkaline volcanoes and confirm that magma mingling, crystal cannibalism and macrocryst entrainment are as ubiquitous in peralkaline systems as they are in their calc-alkaline counterparts.
Template-stripped gold surfaces with 0.4 nm rms roughness suitable for force measurements. Application to the Casimir force in the 20-100 nm range
Creators: name: Ederth, Thomas
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using a template-stripping method, macroscopic gold surfaces with root-mean-square (rms) roughness less than 0.4 nm have been prepared, making them useful for studies of surface interactions in the nanometer range. The utility of such substrates is demonstrated by measurements of the Casimir force at surface separations between 20 and 100 nm, resulting in good agreement with theory. The significance and quantification of this agreement is addressed, as well as some methodological aspects regarding the measurement of the Casimir force with high accuracy.
description: 7 figures
Ferrimagnetism and compensation temperature in spin-$1/2$ Ising trilayers
Creators: name: Diaz, I J L
name: Branco, N S
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The mean-field and effective-field approximations are applied in the study of magnetic and thermodynamic properties of a spin-$1/2$ Ising system containing three layers, each of which is composed exclusively of one out of two possible types of atoms, \textbf{A} or \textbf{B}. The \textbf{A-A} and \textbf{B-B} bonds are ferromagnetic while the \textbf{A-B} bonds are antiferromagnetic. The occurrence of a compensation phenomenon is verified and the compensation and critical temperatures are obtained as functions of the Hamiltonian parameters. We present phase diagrams dividing the parameter space in regions where the compensation phenomenon is present or absent and a detailed discussion about the influence of each parameter on the overall behavior of the system is made.
Additional file 2: of Molecular cloning and characterization of the endothelin 3 gene in black bone sheep
Creators: name: Darwish, Hesham
name: Zhang, Yuanyuan
name: Cui, Kai
name: Yang, Zu
name: Han, Deping
name: Dong, Xianggui
name: Mao, Huaming
name: Deng, Weidong
name: Deng, Xuemei
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Table S1. EDN3 genome sequencing screening results. Table S2. The 16 SNPs obtained from online database. OAR refers to: Ovis aries; Chr: chromosome. (DOCX 18 kb)
Testing general relativity with X-ray reflection spectroscopy of MCG-06-30-15
Creators: name: Tripathi, Ashutosh
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The spacetime geometry around astrophysical black holes is well approximated by the Kerr metric, but deviations from standard predictions are possible in a number of scenarios beyond Einstein's gravity and in the presence of exotic matter. In this paper, we present the constraints on possible deviations from the Kerr solution using X-ray reflection spectroscopy from the analysis of real data. We use the relativistic X-ray reflection code RELXILL modified to a generic stationary, axisymmetric and asymptotically flat black hole metric. We analyze 350 ks long XMM-Newton observations of the AGN in MCG-06-30-15 taken during July-August 2001 and constrain the Johannsen deformation parameter $α_{13}$.
Velocity dispersion profile in dark matter halos
Creators: name: Hoeft, M.
name: Muecket, J. P.
name: Gottloeber, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Numerous numerical studies indicate that dark matter halos show an almost universal radial density profile. The origin of the profile is still under debate. We investigate this topic and pay particular attention to the velocity dispersion profile. To this end we have performed high-resolution simulations with two independent codes, ART and {\sc Gadget}. The radial velocity dispersion can be approximated as function of the potential by $σ_r^2 = a (Φ/ Φ_{\rm{out}})^κ(Φ_{\rm{out}} - Φ)$, where $Φ_{\rm{out}}$ is the outer potential of the halo. For the parameters $a$ and $κ$ we find $a=0.29\pm0.04$ and $κ=0.41\pm0.03$. We find that the power-law asymptote $σ^2 \propto Φ^κ$ is valid out to much larger distances from the halo center than any power asymptote for the density profile $ρ\propto r^{-n}$. The asymptotic slope $n(r \to 0)$ of the density profile is related to the exponent $κ$ via $n=2κ/(1+κ)$. Thus the value obtained for $κ$ from the available simulation data can be used to obtain an estimate of the density profile below presently resolved scales. We predict a continuously decreasing $n$ towards the halo center with the asymptotic value $n \lesssim 0.58$ at $r=0$.
description: 9 pages, 5 figures bw, accepted for publication in ApJ
Doubly Special Relativity as a Limit of Gravity
Creators: name: Imilkowska, Katarzyna
name: Kowalski-Glikman, Jerzy
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Doubly Special Relativity (DSR) is a theory with two observer-independent scales, of velocity and mass, which is expected to replace Special Relativity at ultra-high energies. In these notes we first discuss the postulates of DSR, and then turn to presenting arguments supporting the hypothesis that DSR can be regarded as a flat space, semiclassical limit of gravity. The notes are based on the talk presented at the conference ``Special Relativity -- Will it Survive the Next 100 Years?''
description: 26 pages, Submitted to Lecture Notes in Physics