cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-precision solution of the Dirac Equation for the hydrogen molecular ion by an iterative method
Creators: name: Nogueira, Hugo D.
name: Korobov, Vladimir I.
name: Karr, Jean-Philippe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The Dirac equation for H$_2^+$ is solved numerically using an iterative method proposed by Kutzelnigg [Z. Phys. 11, 15 (1989]. The four-component wavefunction is expanded in a newly introduced kinetically balanced exponential basis set. The ground-state relativistic energy is obtained with an accuracy of $10^{-20}$, which represents an improvement by several orders of magnitude, and is shown to be in good agreement with results obtained from perturbation theory.Highly accurate relativistic wavefunctions are obtained, which is a first step towards nonperturbative calculations of the one-loop self-energy correction in hydrogen molecular ions.
Epidermolysis Bullosa Acquisita Antigen: Relationship Between the Collagenase-Sensitive and -Insensitive Domains
Creators: name: Yoshiike, Takashi
name: Woodley, David
name: Briggaman, Robert
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: To clarify the relationship of the 290 and 145 kDa chains of the epidermolysis bullosa acquisita (EBA) antigen, we subjected urea extracts of skin basement membrane zone (BMZ) proteins and isolated 290 and 145 kDa chains of the EBA antigen cut out of sodium dodecyl sulfate polyacrylamide gels to treatment with clostridial collagenase. When the reaction products were electrophoresed, transblotted, and reacted with EBA patient sera or two monoclonal antibodies to the EBA antigen, the 290 kDa chain was degraded into the 145 kDa band that was resistant to cleavage with collagenase. The 145 kDa domain, isolated after collagenase treatment of the whole BMZ extract, was resistant to degradation by hyaluronidase, chondroitinase ABC, heparinase, and heparitinase but was readily degraded by V-8 protease. These data suggest that the EBA antigen consists of collagen and noncollagen domains of identical size (Mr 145,000), and that the 145 kDa noncollagen domain is generated via degradation of the native 290 kDa species by collagenase.
A study of $d^*(2380)\to d ππ$ decay width
Creators: name: Dong, Yubing
name: Shen, Pengnian
name: Huang, Fei
name: Zhang, Zongye
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decay widths of the $\ds\to d π^0π^0$ and $\ds\to d π^+π^-$ processes are explicitly calculated in terms of our chiral quark model. By using the experimental ratios of cross sections between various decay channels, the partial widths of the $\ds\to pn π^0π^0$, $\ds\to pn π^+π^-$, $\ds\to pp π^0π^-$, and $\ds\to nn π^+π^0$ channels are also extracted. Further including the estimated partial width for the $\ds\to pn $ process, the total width of the $\ds$ resonance is obtained. In the first step of the practical calculation, the effect of the dynamical structure on the width of $\ds$ is studied in the single $ΔΔ$ channel approximation. It is found that the width is reduced by few tens of MeV, in comparison with the one obtained by considering the effect of the kinematics only. This presents the importance of such effect from the dynamical structure. However, the obtained width with the single $ΔΔ$ channel wave function is still too large to explain the data. It implies that the $\ds$ resonance will not consist of the $ΔΔ$ structure only, and instead there should be enough room for other structure such as the hidden-color (CC) component. Thus, in the second step, the width of $\ds$ is further evaluated by using a wave function obtained in the coupled $ΔΔ$ and CC channel calculation in the framework of the Resonating Group Method (RGM). It is shown that the resultant total width for $\ds$ is about 69 MeV, which is compatible with the experimental observation of about 75 MeV and justifies our assertion that the $\ds$ resonance is a hexaquark-dominated exotic state.
description: 6 pages, 2 figures, refs. modified
(100214) Eliza Ann Herbert
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Electronic and magnetic properties of the topological semimetal SmMg$_2$Bi$_2$
Creators: name: Kundu, Asish K.
name: Pakhira, Santanu
name: Roy, Tufan
name: Yilmaz, T.
name: Tsujikawa, Masahito
name: Shirai, Masafumi
name: Vescovo, E.
name: Johnston, D. C.
name: Pasupathy, Abhay N.
name: Valla, Tonica
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Dirac semimetals show nontrivial physical properties and can host exotic quantum states like Weyl semimetals and topological insulators under suitable external conditions. Here, by combining angle-resolved photoemission spectroscopy measurements (ARPES) and first-principle calculations, we demonstrate that Zintl-phase compound SmMg$_2$Bi$_2$ belongs to the close proximity to a topological Dirac semimetallic state. ARPES results show a Dirac-like band crossing at the zone-center near the Fermi level ($E_\mathrm {F}$) which is further confirmed by first-principle calculations. Theoretical studies also reveal that SmMg$_2$Bi$_2$ belongs to a $Z_2$ topological class and hosts spin-polarized states around the $E_\mathrm {F}$. Zintl's theory predicts that the valence state of Sm in this material should be Sm$^{2+}$, however we detect many Sm-4$f$ multiplet states (flat-bands) whose energy positions suggest the presence of both Sm$^{2+}$ and Sm$^{3+}$. It is also evident that these flat-bands and other dispersive states are strongly hybridized when they cross each other. Due to the presence of Sm$^{3+}$ ions, the temperature dependence of magnetic susceptibility $χ(T)$ shows Curie-Weiss-like contribution in the low temperature region, in addition to the Van Vleck-like behaviour expected for the Sm$^{2+}$ ions. The present study will help in better understanding of the electronic structure, magnetism and transport properties of related materials.
description: 11 pages, 7 figures
Stimulation of Growth of Keratinocytes by Basic Fibroblast Growth Factor
Creators: name: O'keefe, Edward
name: Payne, Richard
name: Chiu, Marie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: Numerous heparin-binding growth factors active in different types of cells have recently been shown to belong to the family of fibroblast growth factors. Because these factors are active in some types of epithelial cells, we tested the activity of basic fibroblast growth factor (bFGF) from bovine brain in human keratinocyte cultures. bFGF stimulated thymidine incorporation and cellular proliferation in these cultures with half-maximal activity at approximately 60 pg/ml (4 × 10−12 M). Stimulation of thymidine incorporation was associated with increased nuclear labeling after 22 h in the presence of bFGF under the same conditions used in the thymidine incorporation assay. bFGF was nearly as effective as epidermal growth factor (EGF) in stimulating keratinocyte growth and substantially less effective than crude placental extract, and was not additive with EGF in stimulating thymidine incorporation or proliferation of cells. The findings indicate that bFGF is a potent growth factor for keratinocytes.
(100215) Catherine Herbert
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Plataformas digitais: benefícios para a educação do século XXI
Creators: name: Silva, Elbênia Marla Ramos
Publisher: name: Internet Latent Corpus Journal
Year: 2016

description: São recorrentes as transformações sociais ocasionadas pelaS influências das novas tecnologias digitais. Consequentemente surgem novas plataformas que exigem habilidades e competências dos professores para auxiliar em sua prática docente. Essas novas ações fazem parte do que chamamos de comportamento infocomunicacional, determinado pelas novas tecnologias digitais. Assim como diversos campos sociais sofrem com estas novas formas de interação, o campo educacional também passa por transformações e apresenta novas possibilidades de interação com os recursos da web 2.0. Neste seguimento, o presente artigo pretende apresentar um estudo analítico sobre os exemplos de plataformas digitais educacionais que possam auxiliar na prática docente e auxiliar com novas possibilidades de interação entre professor-aluno e aluno-aluno. As plataformas digitais educacionais selecionadas para este estudo são: Sapo Campus, Moodle e Edmodo.
description: Internet Latent Corpus Journal, Vol 6 No 2 (2016)
Drell-Yan production in third-generation gauge vector leptoquark models at NLO+PS in QCD
Creators: name: Haisch, Ulrich
name: Schnell, Luc
name: Schulte, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Motivated by the long-standing hints of lepton-flavour non-universality in the $b \to c \ell ν$ and $b \to s \ell^+ \ell^-$ channels, we study Drell-Yan ditau production at the Large Hadron Collider (LHC). In the context of models with third-generation gauge vector leptoquarks (LQs), we calculate the complete ${\cal O} (α_s)$ corrections to the $pp \to τ^+ τ^-$ process, achieving next-to-leading order (NLO) plus parton shower (NLO$+$PS) accuracy using the POWHEG method. We provide a dedicated Monte Carlo code that evaluates the NLO QCD corrections on-the-fly in the event generation and use it to study the numerical impact of NLO$+$PS corrections on the kinematic distributions that enter the existing experimental searches for non-resonant ditau final states. Based on our phenomenological analysis we derive NLO accurate constraints on the masses and couplings of third-generation gauge vector LQs using the latest LHC ditau search results corresponding to an integrated luminosity of around $140 \, {\rm fb}^{-1}$ of proton-proton collisions at $\sqrt{s} = 13 \, {\rm TeV}$. The presented NLO$+$PS generator allows for an improved signal modelling, making it an essential tool for future ATLAS and CMS searches for vector LQs in $τ^+ τ^-$ final states at LHC Run III and beyond.
description: 26 pages, 9 figures, v2: extended version of the manuscript as published in JHEP. arXiv admin note: text overlap with arXiv:2207.00356
(100211) Frederick Hughes
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Force-Dependent Folding Kinetics of Single Molecules with Multiple Intermediates and Pathways
Creators: name: Rico-Pasto, Marc
name: Alemany, Anna
name: Ritort, Felix
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Most single-molecule studies derive the kinetic rates of native, intermediate, and unfolded states from equilibrium hopping experiments. Here, we apply Kramers kinetic diffusive model to derive the force-dependent kinetic rates of intermediate states from non-equilibrium pulling experiments. From the kinetic rates, we also extract the force-dependent kinetic barriers and the equilibrium folding energies. We apply our method to DNA hairpins with multiple folding pathways and intermediates. The experimental results agree with theoretical predictions. Furthermore, the proposed non-equilibrium single-molecule approach permits us to characterize kinetic and thermodynamic properties of native, unfolded, and intermediate states that cannot be derived from equilibrium hopping experiments.
description: 8 pages, 5 figures
Neural parameter calibration for large-scale multi-agent models
Creators: name: Gaskin, Thomas
name: Pavliotis, Grigorios A.
name: Girolami, Mark
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: G.1.6; I.2.8; G.3; J.2
subject: 68T07, 49M41, 65K05, 37A50

description: Computational models have become a powerful tool in the quantitative sciences to understand the behaviour of complex systems that evolve in time. However, they often contain a potentially large number of free parameters whose values cannot be obtained from theory but need to be inferred from data. This is especially the case for models in the social sciences, economics, or computational epidemiology. Yet many current parameter estimation methods are mathematically involved and computationally slow to run. In this paper we present a computationally simple and fast method to retrieve accurate probability densities for model parameters using neural differential equations. We present a pipeline comprising multi-agent models acting as forward solvers for systems of ordinary or stochastic differential equations, and a neural network to then extract parameters from the data generated by the model. The two combined create a powerful tool that can quickly estimate densities on model parameters, even for very large systems. We demonstrate the method on synthetic time series data of the SIR model of the spread of infection, and perform an in-depth analysis of the Harris-Wilson model of economic activity on a network, representing a non-convex problem. For the latter, we apply our method both to synthetic data and to data of economic activity across Greater London. We find that our method calibrates the model orders of magnitude more accurately than a previous study of the same dataset using classical techniques, while running between 195 and 390 times faster.
(100213) Ann Herbert
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Elementos de formação crítica extraídos do Twitter nos protestos #contratarifa - 2015
Creators: name: Coelho, Isabel Colucci
name: Lapa, Andrea Brandão
Publisher: name: Internet Latent Corpus Journal
Year: 2016

description: Este trabalho tem por objetivo identificar, em mensagens trocadas na rede social Twitter em um momento de ação política, elementos de formação crítica que possam inspirar novas práticas educativas. Para isso, realiza uma análise qualitativa em mensagens trocadas durante os protestos brasileiros contra o aumento das tarifas de ônibus em 2015. Desenvolve-se aqui uma discussão acerca dos desafios impostos à educação pela cultura digital, uma revisão bibliográfica em busca de fatores e circunstâncias que contribuem para o empoderamento de sujeitos; cria-se um desenho de pesquisa para análise qualitativa de Big Data; e analisa-se as categorias analíticas pré-determinadas pelo marco teórico, pluralidade e agir comunicativo, na ação política promovida por movimentos sociais na internet.
description: Internet Latent Corpus Journal, Vol 6 No 2 (2016)
Stimulation of Thymidine Incorporation in Keratinocytes by Insulin, Epidermal Growth Factor, and Placental Extract: Comparison With Cell Number to Assess Growth
Creators: name: Chiu, Marie L.
name: O&poas;Keefe, Edward J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: The results of a thymidine incorporation assay were compared with direct measurement of cell number in assessment of proliferative growth of human keratinocytes in monolayer culture. Keratinocytes were cultured in supplemented MCDB 153 medium in 0.1 mM Ca2+ and plated in 24-well trays. The ability of insulin, placental extract, and epidermal growth factor to enhance growth and thymidine incorporation were compared. Autoradiography was performed to determine the percentage of cells with labeled nuclei. Epidermal growth factor increased thymidine incorporation under the conditions of the assay, and placental extract increased incorporation by up to 50-fold, since the control cells plated in the absence of epidermal growth factor and other growth factors survived but proliferated minimally. Both cell number and thymidine incorporation showed similar concentration dependence upon insulin and placental extract. If placental extract was added to cells plated 28 h earlier, incorporation was maximal after 17 h in the presence of the extract. If cells were plated in the presence of the extract, 85% of nuclei were shown by autoradiography to be labeled after 23 h, but only 24% of nuclei were labeled in the absence of the extract. A plating density of 104 cells/2-cm2 well was optimal. The assay permits rapid identification of growth- promoting fractions without prolonged growth periods, and is a valid indicator of these agents in keratinocyte cultures.
Detailed Abundances of 15 Stars in the Metal-Poor Globular Cluster NGC 4833
Creators: name: Roederer, Ian U.
name: Thompson, Ian B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have observed 15 red giant stars in the relatively massive, metal-poor globular cluster NGC 4833 using the Magellan Inamori Kyocera Echelle spectrograph at Magellan. We calculate stellar parameters for each star and perform a standard abundance analysis to derive abundances of 43 species of 39 elements, including 20 elements heavier than the iron group. We derive = -2.25 +/- 0.02 from Fe I lines and = -2.19 +/- 0.013 from Fe II lines. We confirm earlier results that found no internal metallicity spread in NGC 4833, and there are no significant star-to-star abundance dispersions among any elements in the iron group (19 <= Z <= 30). We recover the usual abundance variations among the light elements C, N, O, Na, Mg, Al, and possibly Si. The heavy-element distribution reflects enrichment by r-process nucleosynthesis ([Eu/Fe] = +0.36 +/- 0.03), as found in many other metal-poor globular clusters. We investigate small star-to-star variations found among the neutron-capture elements, and we conclude that these are probably not real variations. Upper limits on the Th abundance, log epsilon (Th/Eu) < -0.47 +/- 0.09, indicate that NGC 4833, like other globular clusters where Th has been studied, did not experience a so-called "actinide boost."
description: Accepted for publication in MNRAS. Version 2 adds final publication reference
Spontaneous decay rate and Casimir-Polder potential of an atom near a lithographed surface
Creators: name: Bennett, Robert
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Radiative corrections to an atom are calculated near a half-space that has arbitrarily-shaped small depositions upon its surface. The method is based on calculation of the classical Green's function of the macroscopic Maxwell equations near an arbitrarily perturbed half-space using a Born series expansion about the bare half-space Green's function. The formalism of macroscopic quantum electrodynamics is used to carry this over into the quantum picture. The broad utility of the calculated Green's function is demonstrated by using it to calculate two quantities --- the spontaneous decay rate of an atom near a sharp surface feature, and the Casimir-Polder potential of a finite grating deposited on a substrate. Qualitatively new behaviour is found in both cases, most notably in the latter where it is observed that the periodicity of the Casimir-Polder potential persists even outside the immediate vicinity of the grating.
description: Title changed, typos corrected
A formação de sujeitos nas redes sociais em contexto escolar
Creators: name: Cunha, Arisnaldo Adriano Da
name: Lapa, Andrea Brandão
Publisher: name: Internet Latent Corpus Journal
Year: 2016

description: A formação crítica pode estar pautada em atitudes como autoria e cooperação fomentadas pelas redes sociais e projetos criativos mediados pelo professor, como proposta para superação da pedagogia da transmissão. Este artigo apresenta um modelo de investigação que permite analisar como as redes sociais podem contribuir para a formação crítica. Consiste em uma metodologia qualitativa de pesquisa cuja finalidade é selecionar e definir indicadores de investigação para os conceitos de autoria e cooperação a partir do referencial teórico, e desenvolve métricas para a análise de conteúdo das trocas comunicativas entre alunos e professores no grupo fechado criado no Facebook. Os resultados apontam que utilizar redes sociais conservando a lógica conteudista e reprodutivista do livro didático, reduzindo o aluno a olhar, ouvir, copiar e prestar contas, não dará conta de formar sujeitos críticos imersos da cultura digital.
description: Internet Latent Corpus Journal, Vol 6 No 2 (2016)
Delicate windows into evaporating black holes
Creators: name: Craps, Ben
name: Hernandez, Juan
name: Khramtsov, Mikhail
name: Knysh, Maria
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revisit the model of an AdS$_2$ black hole in JT gravity evaporating into an external bath. We study when, and how much, information about the black hole interior can be accessed through different portions of the Hawking radiation collected in the bath, and we obtain the corresponding full quantitative Page curves. As a refinement of previous results, we describe the island phase transition for a semi-infinite segment of radiation in the bath, establishing access to the interior for times within the regime of applicability of the model. For finite-size segments in the bath, one needs to include the purifier of the black hole microscopic dual together with the radiation segment in order to access the interior information. We identify four scenarios of the entropy evolution in this case, including a possibility where the interior reconstruction window is temporarily interrupted. Analyzing the phase structure of the Page curve of a finite segment with length comparable to the Page time, we demonstrate that it is very sensitive to changes of the parameters of the model. We also discuss the evolution of the subregion complexity of the radiation during the black hole evaporation.
description: 76 pages, 20 figures, 2 tables. v2: added extra references, published in JHEP
HD 83443c: A highly eccentric giant planet on a 22-year orbit
Creators: name: Errico, Adriana
name: Wittenmyer, Robert A.
name: Horner, Jonathan
name: Li, Zhexing
name: Brandt, Gregory Mirek
name: Kane, Stephen R.
name: Fetherolf, Tara
name: Holt, Timothy R.
name: Carter, Brad
name: Butler, Jake T. Clark. Robert . P.
name: Tinney, Chris G.
name: Ballard, Sarah
name: Bowler, Brendan P.
name: Kielkopf, John
name: Liu, Huigen
name: Plavchan, Peter P.
name: Shporer, Avi
name: Zhang, Hui
name: Wright, Duncan J.
name: Addison, Brett C.
name: Mengel, Matthew W.
name: Okumura, Jack
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery of a highly eccentric long-period Jovian planet orbiting the hot-Jupiter host HD\,83443. By combining radial velocity data from four instruments (AAT/UCLES, Keck/HIRES, HARPS, Minerva-Australis) spanning more than two decades, we find evidence for a planet with m~sin~$i=1.35^{+0.07}_{-0.06}$\,\mj, moving on an orbit with $a=8.0\pm$0.8\,au and eccentricity $e=0.76\pm$0.05. We combine our radial velocity analysis with \textit{Gaia} eDR3 /\textit{Hipparcos} proper motion anomalies and derive a dynamical mass of $1.5^{+0.5}_{-0.2} M_{\rm Jup}$. We perform a detailed dynamical simulation that reveals locations of stability within the system that may harbor additional planets, including stable regions within the habitable zone of the host star. HD\,83443 is a rare example of a system hosting a hot Jupiter and an exterior planetary companion. The high eccentricity of HD\,83443c suggests that a scattering event may have sent the hot Jupiter to its close orbit while leaving the outer planet on a wide and eccentric path.
The Presence of Intra-lamina Lucida Blister Formation in Epidermolysis Bullosa Acquisita: Possible Role of Leukocytes
Creators: name: Tyring, Stephen
name: Gammon, W. Ray
name: Fine, Jo-David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: In evaluating patients we have noted disparity between the locations of bound immunoreactants and the level of blistering in epidermolysis bullosa acquisita (EBA). We examined 10 consecutive EBA patients by routine histology, direct (DIF) and indirect (IIF; intact and NaCl-split skin) immunofluorescence, immunofluorescence mapping (IM), and/or direct immunoelectron microscopy (DIEM). DIF was positive in each. IIF was positive in 3/8 and 6/7 patients when intact and split skin were used as substrates. DIEM revealed immunoreactants within the lamina densa (LD) in 6/10, sub-LD in 1/10, and both LD and sub-LD in 3/10 patients. In contrast, by DIEM and IM, blister formation was noted within the lamina lucida (LL) in 7/9 and 8/10, sub-LD in 1/9 and 1/10, and within both LL and sub-LD in 1/9 and 1/10, respectively. In the presence of neutrophils within the upper dermis (n = 6), cleavage occurred within the LL in 5 specimens; in one additional specimen containing predominantly neutrophils, cleavage occurred within both LL and sub-LD. In the presence of mononuclear cells (n = 2), intra-LL cleavage occurred. In the presence of eosinophils, cleavage occurred within both LL and sub-LD. In the one specimen lacking any infiltrate, the cleavage plane was exclusively sub-LD. Intra-LL cleavage planes are more common than sub-LD ones in at least early cases of EBA. These findings likely represent the intra-LL-separating effect of leukocyte-derived proteolytic enzymes, when such cells are chemoattracted to the dermoepidermal junction by bound immunoreactants.
Testemunhos de Cuidadores Informais de familiares com Doença de Alzheimer em Corpus Latente da Internet
Creators: name: Santos, Evelyn
name: Souza, Dayse Neri De
name: Lomeo, Roselane
name: Ramos, Isabel
name: Castro, Lisneti
name: Teixeira, Helena
name: Mendes, Laurinda
name: Leite, Ana Catarina
Publisher: name: Internet Latent Corpus Journal
Year: 2016

description: O aumento da perspetiva de vida tem possibilitado avanços à população mundial, contudo, no que diz respeito a saúde, essa realidade tem tornado as pessoas mais suscetíveis às doenças incapacitantes, como a Doença de Alzheimer (DA). Neste contexto, verifica-se cada vez mais a necessidade de cuidar do outro, destacando-se o cuidado exercido pelos Cuidadores Informais (CI) enquanto familiares, amigos e vizinhos, que despendem esta tarefa de uma forma espontânea e sem formação profissional. Centrados nesta realidade, a partir de um estudo qualitativo, apresentamos as vivências de CI sobre o ato de cuidar de um familiar com a DA, através de 20 testemunhos em Corpus Latente da Internet, disponibilizados no site de uma Associação Portuguesa. Concluiu-se que os relatos dos CI contribuem para a compreensão da prestação de cuidados às pessoas com DA e evidencia-se a carência de apoio, de informação e ações interventivas para a melhoria do bem-estar do CI.
description: Internet Latent Corpus Journal, Vol 6 No 2 (2016)
Gate-tunable negative refraction of mid-infrared polaritons
Creators: name: Hu, Hai
name: Chen, Na
name: Teng, Hanchao
name: Yu, Renwen
name: Xue, Mengfei
name: Chen, Ke
name: Xiao, Yuchuan
name: Qu, Yunpeng
name: Hu, Debo
name: Chen, Jianing
name: Sun, Zhipei
name: Li, Peining
name: de Abajo, F. Javier García
name: Dai, Qing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Negative refraction provides an attractive platform to manipulate mid-infrared and terahertz radiation for molecular sensing and thermal radiation applications. However, its implementation based on available metamaterials and plasmonic media presents challenges associated with optical losses, limited spatial confinement, and lack of active tunability in this spectral range. Here, we demonstrate gate-tunable negative refraction at mid-infrared frequencies using hybrid topological polaritons in van der Waals heterostructures with high spatial confinement. We experimentally visualize wide-angle negatively-refracted surface polaritons on α-MoO3 films partially decorated with graphene, undergoing planar nanoscale focusing down to 1.6% of the free-space wavelength. Our atomically thick heterostructures outperform conventional bulk materials by avoiding scattering losses at the refracting interface while enabling active tunability through electrical gating. We propose polaritonic negative refraction as a promising platform for infrared applications such as electrically tunable super-resolution imaging, nanoscale thermal manipulation, and molecular sensing.
Does fractal Universe favour warm inflation: Observational support?
Creators: name: Bose, A.
name: Chakraborty, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The present work examines the possibility of warm inflationary paradigm in the modified gravity theory with fractal geometry. By choosing the normal fluid as radiation fluid and the effective fluid (with the extra term in modified field equation) as the inflaton field both strong and weak dissipative regimes have been studied using slow roll approximation with quasi-stable criteria for radiation. Finally, using the Planck data set, the present model has been analyzed for various choices of the fractal function and the dissipation parameter.
Root systems and symmetries of torus manifolds
Creators: name: Kuroki, Shintaro
name: Masuda, Mikiya
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 57S15, 14M25

description: We associate a root system to a finite set in a free abelian group and prove that its irreducible subsystem is of type A, B or D. We apply this general result to a torus manifold, where a torus manifold is a $2n$-dimensional connected closed smooth manifold with a smooth effective action of an $n$-dimensional compact torus having a fixed point, and show that if the torus action extends to a smooth action of a connected compact Lie group $G$, then a simple factor of the Lie algebra of $G$ is of type A, B or D. This gives an alternative proof to Wiemeler's theorem. We also discuss a similar problem for a torus manifold with an invariant stably complex structure. In this case only type A appears.
description: 21 pages, v2: deleted Lemma 3.11, added Remark 4.7, references updated
(100209) Richard W Hughes
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Thouless pumping and topology
Creators: name: Citro, Roberta
name: Aidelsburger, Monika
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Thouless pumping provides one of the simplest manifestations of topology in quantum systems, and has attracted a lot of recent interest, both theoretically and experimentally. Since the seminal works by Thouless and Niu in 1983 and 1984, it is argued that the quantization of the pumped charge is robust against weak disorder, but a clear characterization of the localization properties of the relevant states, and the breakdown of quantized transport in the presence of interaction or out of the adiabatic approximation, has been long debated. Thouless pumping is also the first example of a topological phase emerging in a periodically-driven system. Driven systems can exhibit exotic topological phases without any static analogue and have been the subject of many recent proposals both in fermionic and bosonic systems in diverse platforms ranging from cold atoms to photonics and condensed matter systems. In this respect, this review has a twofold purpose: On the one hand, it serves as a basis to understand the robustness of the topology of slowly-driven systems per se; On the other hand, it highlights the rich properties of topological pumps and their diverse range of applications, for instance, in systems with synthetic dimensions or for understanding higher-order topological phases. These examples underline the relevance of topological pumping for the fast growing field of topological quantum matter.
description: 8 figures
Chromatic Drift of the Espresso Fabry-Pérot Etalon
Creators: name: Schmidt, Tobias M.
name: Chazelas, Bruno
name: Lovis, Christophe
name: Dumusque, Xavier
name: Bouchy, François
name: Pepe, Francesco
name: Figueira, Pedro
name: Sosnowska, Danuta
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In the last decade, white-light illuminated Fabry-Pérot interferometers wave been established as a widely used, relatively simple, reliable, and cost-effective way to precisely calibrate high-resolution echelle spectrographs. However, Terrien et al. (2021) recently reported a chromatic drift of the Fabry-Pérot interferometer installed at the Habitable-zone Planet Finder spectrograph. In particular, they found that the variation of the etalon effective gap size is not achromatic as usually assumed but in fact depends on wavelength. Here, we present a similar study of the Espresso Fabry-Pérot interferometer. Using daily calibrations spanning a period of over 2.5 years, we also find clear evidence for a chromatic drift with an amplitude of a few cm/s per day that has a characteristic, quasi-oscillatory dependence on wavelength. We conclude that this effect is probably caused by an aging of the dielectric mirror coatings and expect that similar chromatic drifts might affect all Fabry-Pérot interferometers used for calibration of astronomical spectrographs. However, we also demonstrate that the chromatic drift can be measured and in principle corrected using only standard calibrations based on hollow cathode lamp spectra.
description: 8 pages, 3 figures; accepted for publication in A&A
(100210) Walter E Hughes
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Potencialidades da pesquisa na internet para a investigação qualitativa
Creators: name: Costa, Elisabete Pinto Da
name: Taborda, Célia
name: Costa, António Pedro
Publisher: name: Internet Latent Corpus Journal
Year: 2016

description: As novas tecnologias de comunicação mudaram a forma de interagir socialmente. Retomamos ideias basilares segundo as quais vivemos na era da informação (Castells, 2007) e a comunicação em rede é a realidade das sociedades atuais. Na verdade, a internet fez emergir, aquilo que Castells (2007a) designou, a “sociedade de massa autocomandada”, em que os utilizadores têm acesso rápido não só ao consumo, mas também à produção de informação. A internet abriu um vasto campo ao cidadão, a quem, segundo Pierre-Lévy (1990), cabe explorar as potencialidades mais positivas. Ora, a rede digital possibilita inúmeras formas de expressão e disseminação de conteúdos que ficam disponíveis, permitindo-se aos investigadores explorar estes recursos. Estes devem possuir domínio tanto das metodologias de investigação como da internet. Nesse sentido, as pesquisas efetuadas em ambientes digitais poderão introduzir inovação à conceção clássica da investigação. Como referem Anderson e Kanuka (2003, p. 5), “e-research is more than a set of new research techniques”. (...)
description: Internet Latent Corpus Journal, Vol 6 No 2 (2016)
Multiplexable frequency retuning of MKID arrays using their non-linear kinetic inductance
Creators: name: De Lucia, Mario
name: Baldwin, Eoin
name: Ulbricht, Gerhard
name: Bracken, Colm
name: Stamenov, Plamen
name: Ray, Tom
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Superconductivity (cond-mat.supr-con)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Microwave Kinetic Inductance Detector (MKID) arrays are currently being developed and deployed for astronomical applications in the visible and near infrared and for sub-millimetre astronomy. One of the main drawbacks of MKIDs is that large arrays would exhibit a pixel yield, the percentage of individually distinguishable pixels to the total number of pixels, of 75 - 80 %. Imperfections arising during the fabrication can induce an uncontrolled shift in the resonance frequency of individual resonators which can end up resonating at the same frequency of a different resonator. This makes a number of resonators indistinguishable and therefore unusable for imaging. This paper proposes an approach to individually re-tune the colliding resonators in order to remove the degeneracy and increase the number of MKIDs with unique resonant frequencies. The frequency re-tuning is achieved through a DC bias of the resonator, the kinetic inductance of a superconducting thin film is current dependent and its dependence is non linear. Even though this approach has been already proposed, an innovative pixel design, described in this paper, may solve two issues previously described in literature such as increased electromagnetic losses to the DC-bias line, and the multiplexibility of multiple resonators on a single feedline.
description: 8 pages, 7 figures, SPIE Proceedings
21st Century Global and Regional Surface Temperature Projections
Creators: name: Ma, Nicole
name: Jiang, Jonathan H.
name: Hou, Kennard
name: Lin, Yun
name: Vu, Trung
name: Rosen, Philip E.
name: Gu, Yu
name: Fahy, Kristen A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Many regions across the globe broke their surface temperature records in recent years, further sparking concerns about the impending arrival of "tipping points" later in the 21st century. This study analyzes observed global surface temperature trends in three target latitudinal regions: the Arctic Circle, the Tropics, and the Antarctic Circle. We show that global warming is accelerating unevenly across the planet, with the Arctic warming at approximately three times the average rate of our world. We further analyzed the reliability of latitude-dependent surface temperature simulations from a suite of Coupled Model Intercomparison Project Phase 6 models and their multi-model mean. We found that GISS-E2-1-G and FGOALS-g3 were the best-performing models based on their statistical abilities to reproduce observational, latitude-dependent data. Surface temperatures were projected from ensemble simulations of the Shared Socioeconomic Pathway 2-4.5 (SSP2-4.5). We estimate when the climate will warm by 1.5, 2.0, and 2.5 degrees C relative to the preindustrial period, globally and regionally. GISS-E2-1-G projects that global surface temperature anomalies would reach 1.5, 2.0, and 2.5 degrees C in 2024 (+/-1.34), 2039 (+/-2.83), and 2057 (+/-5.03) respectively, while FGOALS-g3 predicts these "tipping points" would arrive in 2024 (+/-2.50), 2054 (+/-7.90), and 2087 (+/-10.55) respectively. Our results reaffirm a dramatic, upward trend in projected climate warming acceleration, with upward concavity in 21st century projections of the Arctic, which could lead to catastrophic consequences across the Earth. Further studies are necessary to determine the most efficient solutions to reduce global warming acceleration and maintain a low SSP, both globally and regionally.
Interlayer electronic hybridization leads to exceptional thickness-dependent vibrational properties in few-layer black phosphorus
Creators: name: Hu, Zhi-Xin
name: Kong, Xianghua
name: Qiao, Jingsi
name: Normand, Bruce
name: Ji, Wei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Stacking two-dimensional (2D) materials into multi-layers or heterostructures, known as van der Waals (vdW) epitaxy, is an essential degree of freedom for tuning their properties on demand. Few-layer black phosphorus (FLBP), a material with high potential for nano- and optoelectronics applications, appears to have interlayer couplings much stronger than graphene and other 2D systems. Indeed, these couplings call into question whether the stacking of FLBP can be governed only by vdW interactions, which is of crucial importance for epitaxy and property refinement. Here, we perform a theoretical investigation of the vibrational properties of FLBP, which reflect directly its interlayer coupling, by discussing six Raman-observable phonons, including three optical, one breathing, and two shear modes. With increasing sample thickness, we find anomalous redshifts of the frequencies for each optical mode but a blueshift for the armchair shear mode. Our calculations also show splitting of the phonon branches, due to anomalous surface phenomena, and strong phonon-phonon coupling. By computing uniaxial stress effects, inter-atomic force constants, and electron densities, we provide a compelling demonstration that these properties are the consequence of strong and highly directional interlayer interactions arising from electronic hybridization of the lone electron-pairs of FLBP, rather than from vdW interactions. This exceptional interlayer coupling mechanism controls the stacking stability of BP layers and thus opens a new avenue beyond vdW epitaxy for understanding the design of 2D heterostructures.
description: 5 Figures with 8 Supplementary Figures and 1 Supplementary Table
Characterization of “Neo-Dermis” Formation Beneath Cultured Human Epidermal Autografts Transplanted on Muscle Fascia
Creators: name: O'Keefe, Edward
name: Woodley, David
name: Peterson, Hugh
name: Meyers, Anthony
name: Briggaman, Robert
name: Herzog, Sandra
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: Cultured human keratinocyte autografts were transplanted to burn wounds that had been completely excised down to muscle fascia such that all cutaneous elements were removed from the wounds. Healing autografts were biopsied from days 6-153 in five patients, and the "neo-dermis" beneath the autografts was examined by immunofluorescent staining using antibody probes to connective tissue molecules, by histochemical staining for elastin fibers, and by electron microscopy. We found that the neo-dermis contained most of the major connective tissue elements early in the post-transplantation period. However, regardless of the time examined, there was a paucity of elastin fibers and poor organization of linkin (microthread-like fibers) in the neo-dermis beneath autografts. The perturbations of these connective tissue components in the neo-dermis may play a role in the poor recoil and elastic properties of burn wounds treated with autografts.