cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interfacial photochemistry at the ocean surface is a global source of organic vapors and aerosols
Creators: name: Brüggemann, Martin
name: Hayeck, Nathalie
name: George, Christian
Publisher: name: [London] : Nature Publishing Group UK
Year: 2018
Subjects: subject: aerosol
subject: animal experiment
subject: atmosphere
subject: biological activity
subject: calculation
subject: climate
subject: controlled study
subject: exhaust gas
subject: marine biology
subject: nonhuman
subject: particle size
subject: photochemistry
subject: reaction analysis
subject: sea
subject: seasonal variation
subject: surface area
subject: ultraviolet irradiation
subject: vapor
subject: 500

description: The surface of the oceans acts as a global sink and source for trace gases and aerosol particles. Recent studies suggest that photochemical reactions at this air/water interface produce organic vapors, enhancing particle formation in the atmosphere. However, current model calculations neglect this abiotic source of reactive compounds and account only for biological emissions. Here we show that interfacial photochemistry serves as a major abiotic source of volatile organic compounds (VOCs) on a global scale, capable to compete with emissions from marine biology. Our results indicate global emissions of 46.4-184 Tg C yr-1 of organic vapors from the oceans into the marine atmosphere and a potential contribution to organic aerosol mass of more than 60% over the remote ocean. Moreover, we provide global distributions of VOC formation potentials, which can be used as simple tools for field studies to estimate photochemical VOC emissions depending on location and season.
Synthesis of a molecularly defined single-active site heterogeneous catalyst for selective oxidation of N-heterocycles
Creators: name: Zhang, Yujing
name: Pang, Shaofeng
name: Wei, Zhihong
name: Jiao, Haijun
name: Dai, Xingchao
name: Wang, Hongli
name: Shi, Feng
Publisher: name: [London] : Nature Publishing Group UK
Year: 2018
Subjects: subject: catalysis
subject: catalyst
subject: controlled study
subject: enzyme active site
subject: oxidation
subject: oxidative dehydrogenation
subject: polymerization
subject: synthesis
subject: thermodynamic
subject: 500

description: Generally, a homogeneous catalyst exhibits good activity and defined active sites but it is difficult to recycle. Meanwhile, a heterogeneous catalyst can easily be reused but its active site is difficult to reveal. It is interesting to bridge the gap between homogeneous and heterogeneous catalysis via controllable construction of a heterogeneous catalyst containing defined active sites. Here, we report that a molecularly defined, single-active site heterogeneous catalyst has been designed and prepared via the oxidative polymerization of maleimide derivatives. These polymaleimide derivatives can be active catalysts for the selective oxidation of heterocyclic compounds to quinoline and indole via the recycling of -C=O and -C-OH groups, which was confirmed by tracing the reaction with GC-MS using maleimide as the catalyst and by FT-IR analysis with polymaleimide as the catalyst. These results might promote the development of heterogeneous catalysts with molecularly defined single active sites exhibiting a comparable activity to homogeneous catalysts.
Phenotypic characteristics of patients with chronic widespread pain and fibromyalgia: a cross-sectional cluster analysis
Creators: name: Duhn, PH
name: Christensen, R
name: Locht, H
name: Henriksen, M
name: Ginnerup-Nielsen, E
name: Bliddal, H
name: Wæhrens, EE
name: Thielen, K
name: Amris, K
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: This study aimed to explore whether phenotypic characteristics of patients with chronic widespread pain (CWP) and fibromyalgia (FM) can be aggregated into definable clusters that may help to tailor treatments. Baseline variables (sex, age, education, marital/employment status, pain duration, prior CWP/FM diagnosis, concomitant rheumatic disease, analgesics, tender point count, and disease variables derived from standardized questionnaires) collected from 1099 patients (93.4% females, mean age 44.6 years) with a confirmed CWP or FM diagnosis were evaluated by hierarchical cluster analysis. The number of clusters was based on coefficients in the agglomeration schedule, supported by dendrograms and silhouette plots. Simple and multiple regression analyses using all variables as independent predictors were used to assess the likelihood of cluster assignment, reported as odds ratios (ORs) with 95% confidence intervals (CIs). Only one cluster emerged (Cluster 1: 455 patients). Participants in this cluster were characterized as working (OR 66.67, 95% CI 7.14 to 500.00), with a medium-term/higher education (OR 16.80, 95% CI 1.94 to 145.41), married/cohabiting (OR 14.29, 95% CI 1.26 to 166.67), and using mild analgesics (OR 25.64, 95% CI 0.58 to > 999.99). The odds of being an individual in Cluster 1 were lower when having a worse score on the PDQ (score ≥ 18) (OR < 0.001, 95% CI < 0.001 to 0.02). We identified one cluster, where participants were characterized by a potentially favourable clinical profile. More studies are needed to evaluate whether these characteristics could be used to guide the management of patients with CWP and FM.
Polycapillary-boosted instrument performance in the extreme ultraviolet regime for inverse photoemission spectroscopy
Creators: name: Braig, Christoph
name: Sokolov, Andrey
name: Wilks, Regan G.
name: Kozina, Xeniya
name: Kunze, Thomas
name: Bjeoumikhova, Sempfira
name: Thiel, Markus
name: Erko, Alexei
name: Bär, Marcus
Publisher: name: Washington, DC : Optica
Year: 2017
Subjects: subject: Angular divergence
subject: Extreme Ultraviolet
subject: Hard X ray
subject: Instrument performance
subject: Inverse photoemission spectroscopy
subject: Performance
subject: Photon energy
subject: Polycapillaries
subject: Spatial resolution
subject: X ray bands
subject: 530

description: A collimating polycapillary half lens, traditionally used in the medium and hard X-ray band, is operated at a photon energy of 36 eV for the first time. While the transmission still exceeds 50%, the measured and simulated spatial resolution and angular divergence approach 0.4 mm or less and at most 20 mrad, respectively. This unexpected, superior performance of the polycapillary optic in the extreme Ultraviolet could enable the design of an e cient, versatile and compact spectrometer for inverse photoemission spectroscopy (IPES): Its wavelength-dispersive component, a customized reflection zone plate, can maintain an energy resolution of 0.3 eV, whereas the sensitivity may be enhanced by more than one order of magnitude, compared to conventional spectrometers. Furthermore, the overall length of 0.9 m would allow for an eased alignment and evacuation. We see a significant potential for numerous polycapillary-based XUV / soft X-ray instruments in the future, in particular after further optimization for this long wavelength regime.
Topology determines force distributions in one-dimensional random spring networks
Creators: name: Heidemann, Knut M.
name: Sageman-Furnas, Andrew O.
name: Sharma, Abhinav
name: Rehfeldt, Florian
name: Schmidt, Christoph F.
name: Wardetzky, Max
Publisher: name: Woodbury, NY : Inst.
Year: 2018
Subjects: subject: Fiber reinforced materials
subject: Graph theory
subject: Mechanical stability
subject: Elastic springs
subject: Force distributions
subject: Graph theoretical approach
subject: Mean field approach
subject: Network topology
subject: One-dimensional model
subject: Periodic boundary conditions
subject: Universal properties
subject: Topology
subject: 530

description: Networks of elastic fibers are ubiquitous in biological systems and often provide mechanical stability to cells and tissues. Fiber-reinforced materials are also common in technology. An important characteristic of such materials is their resistance to failure under load. Rupture occurs when fibers break under excessive force and when that failure propagates. Therefore, it is crucial to understand force distributions. Force distributions within such networks are typically highly inhomogeneous and are not well understood. Here we construct a simple one-dimensional model system with periodic boundary conditions by randomly placing linear springs on a circle. We consider ensembles of such networks that consist of N nodes and have an average degree of connectivity z but vary in topology. Using a graph-theoretical approach that accounts for the full topology of each network in the ensemble, we show that, surprisingly, the force distributions can be fully characterized in terms of the parameters (N,z). Despite the universal properties of such (N,z) ensembles, our analysis further reveals that a classical mean-field approach fails to capture force distributions correctly. We demonstrate that network topology is a crucial determinant of force distributions in elastic spring networks.
Secrecy Capacity Region of Some Classes of Wiretap Broadcast Channels
Creators: name: Benammar, Meryem
name: Piantanida, Pablo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This work investigates the secrecy capacity of the Wiretap Broadcast Channel (WBC) with an external eavesdropper where a source wishes to communicate two private messages over a Broadcast Channel (BC) while keeping them secret from the eavesdropper. We derive a non-trivial outer bound on the secrecy capacity region of this channel which, in absence of security constraints, reduces to the best known outer bound to the capacity of the standard BC. An inner bound is also derived which follows the behavior of both the best known inner bound for the BC and the Wiretap Channel. These bounds are shown to be tight for the deterministic BC with a general eavesdropper, the semi-deterministic BC with a more-noisy eavesdropper and the Wiretap BC where users exhibit a less-noisiness order between them. Finally, by rewriting our outer bound to encompass the characteristics of parallel channels, we also derive the secrecy capacity region of the product of two inversely less-noisy BCs with a more-noisy eavesdropper. We illustrate our results by studying the impact of security constraints on the capacity of the WBC with binary erasure (BEC) and binary symmetric (BSC) components.
description: 19 pages, 8 figures, To appear in IEEE Trans. on Information Theory
The photoheating of the intergalactic medium in synthesis models of the UV background
Creators: name: Puchwein, Ewald
name: Bolton, James S.
name: Haehnelt, Martin G.
name: Madau, Piero
name: Becker, George D.
name: Haardt, Francesco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We compare cosmological hydrodynamical simulations combined with the homogeneous metagalactic UV background (UVB) of Haardt & Madau (2012) (HM2012) to observations of the Lyman-alpha forest that are sensitive to the thermal and ionization state of the intergalactic medium (IGM). The transition from optically thick to thin photoheating predicted by the simple one-zone, radiative transfer model implemented by HM2012 predicts a thermal history that is in remarkably good agreement with the observed rise of the IGM temperature at z~3 if we account for the expected evolution of the volume filling factor of HeIII. Our simulations indicate that there may be, however, some tension between the observed peak in the temperature evolution and the rather slow evolution of the HeII opacities suggested by recent Hubble Space Telescope/COS measurements. The HM2012 UVB also underpredicts the metagalactic hydrogen photoionization rate required by our simulations to match the observed opacity of the forest at z>4 and z<2.
description: 19 pages, 10 figures, MNRAS accepted
Topology Counts: Force Distributions in Circular Spring Networks
Creators: name: Heidemann, Knut M.
name: Sageman-Furnas, Andrew O.
name: Sharma, Abhinav
name: Rehfeldt, Florian
name: Schmidt, Christoph F.
name: Wardetzky, Max
Publisher: name: College Park, Md. : APS
Year: 2018
Subjects: subject: Arbitrary dimension
subject: Elastic springs
subject: Force distributions
subject: Mean field approach
subject: Network topology
subject: Polymer networks
subject: Spring networks
subject: Theoretical technique
subject: 550
subject: 530

description: Filamentous polymer networks govern the mechanical properties of many biological materials. Force distributions within these networks are typically highly inhomogeneous, and, although the importance of force distributions for structural properties is well recognized, they are far from being understood quantitatively. Using a combination of probabilistic and graph-theoretical techniques, we derive force distributions in a model system consisting of ensembles of random linear spring networks on a circle. We show that characteristic quantities, such as the mean and variance of the force supported by individual springs, can be derived explicitly in terms of only two parameters: (i) average connectivity and (ii) number of nodes. Our analysis shows that a classical mean-field approach fails to capture these characteristic quantities correctly. In contrast, we demonstrate that network topology is a crucial determinant of force distributions in an elastic spring network. Our results for 1D linear spring networks readily generalize to arbitrary dimensions.
INFLUENCE OF SOCIO-ECONOMIC STATUS ON CHILD HEALTH AND DEVELOPMENT IN NALGONDA DISTRICT OF TELANGANA STATE
Creators: name: Rakesh, Gurrapu
name: Babu, M. Shoban
Publisher: name: figshare
Year: 2022
Subjects: Health Care

description: The current study is assessing the influence of socioeconomic status on child health and development.The researcher has adopted a descriptive research design with the quantitative method for the current study, the sample size is 300 and was collected from the women respondents currently who have 0-6 years old children including baby boys and baby girls. The mothers of children age group between 16-39 and residing in Nalgonda district of Telangana state, purposive sampling technique of nonprobability sampling method used to obtain the sample. Socio-demographic profile, Modified Kuppuswamy Socio-Economic Scale 2019, child health questionnaire including three domains were used in the study to obtain the data. Results: The analysis of Chi-square results shows that the physical and motor development, social and emotional development, and cognitive development of the children are statistically significantly associated with the gender, type of family, and domicile of the respondents. Socioeconomic status is positively correlated with children’s physical and motor development, social and emotional development, and cognitive development
Fermi arcs and pseudogap emerging from dimensional crossover at the Fermi surface in La$_{2-x}$Sr$_x$CuO$_4$
Creators: name: Lazic, P.
name: Sunko, D. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The doping mechanism and realistic Fermi surface (FS) evolution of La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) are modelled within an extensive ab-initio framework including advanced band-unfolding techniques. We show that ordinary Kohn-Sham DFT+U can reproduce the observed metal-insulator transition, when not restricted to the paramagnetic solution space. Arcs are self-doped by orbital charge transfer within the Cu-O planes, while the introduced Sr charge is strongly localized. Arc protection and the inadequacy of the rigid-band picture are consequences of a rapid change in orbital symmetry at the Fermi energy: the material undergoes a dimensional crossover along the Fermi surface, between the nodal (2D) and antinodal (3D) regions. In LSCO, this crossover accounts for FS arcs, the antinodal pseudogap, and insulating behavior in $c$-axis conductivity, all ubiquitous phenomena in high-T$_c$ cuprates. Ligand Coulomb integrals involving out-of-plane sites are principally responsible for the most striking effects observed by ARPES in LSCO.
description: Final slightly expanded version, as accepted in EPL
Role of physical therapy in adult chronic non-bacterial osteitis: patients’ and therapists’ perspectives
Creators: name: Leerling, AT
name: Ueckert, DA
name: Van der Giesen, FJ
name: Vliet-Vlieland, TPM
name: Winter, EM
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Chronic nonbacterial osteitis (CNO) is a rare bone disease causing pain and functional impairment. We aimed to explore the application of physical therapy (PT) for adult CNO from the patients’ and primary care therapists’ perspective. Cross-sectional study among the Dutch adult CNO cohort (1992–present). A survey on PT-use for axial spondylarthritis was adapted for CNO. Patients using PT in the past 2 years (recent PT-users) were asked about modalities, perceived effects, satisfaction, and preferences for provision. Their current physical therapists were invited to complete a self-developed survey covering therapy details and educational preferences. 80/199 invited patients and 14/16 invited therapists completed the survey respectively. 41 (51%) patients used PT for CNO in the preceding 2 years, 14 (18%) used PT >2 years back, and 25 (31%) never used PT. Recent PT-users (n=41) reported diverse treatment modalities, involving massage (61%), joint mobilizations (44%), breathing exercises (49%), muscle strengthening (32%) and counselling through of home-exercises (46%) and pain education (32%). 64% of all patients desired greater emphasis from physicians regarding the role of PT. Most therapists would appreciate referral letters with CNO-specific information (93%), and consultations with specialized therapists (86%). In this study, two-third of adult CNO patients had -ever or recently- used PT, which involved variable therapeutic modalities. Most patients were receptive to a larger role of PT in CNO-management and most therapists preferred CNO-specific information to optimize their care. These findings provide a foundation for the development and systematic evaluation of CNO-specific PT.
Efficient Test to Demonstrate Genuine Three Particle Nonlocality
Creators: name: Mukherjee, Kaushiki
name: Paul, Biswajit
name: Sarkar, Debasis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: According to the studies of genuine tripartite nonlocality in discrete variable quantum systems conducted so far, Svetlichny inequality is considered as the best Bell-type inequality to detect genuine (three way) nonlocality of pure tripartite genuine entangled states. In the present work, we have considered another Bell-type inequality (which has been reported as the $99$-th facet of $NS_2$ local polytope in (J.-D. Bancal, et.al.,Phys. Rev.A \textbf{88}, 014102 (2013)), to reveal genuine tripartite nonlocality of generalized GHZ(Greenberger-Horne-Zeilinger) class and a subclass of extended GHZ class states(\cite{ACN}) thereby proving the conjecture given by Bancal, et.al.\cite{BAL} for the GGHZ class and the subclass of extended GHZ states. We compare the violation of this inequality with Svetlichny inequality which reveals the efficiency of the former inequality over the latter to demonstrate genuine nonlocality using the above classes of quantum states. Even in some cases discord monogamy score can be used as a better measure of quantum correlation over Svetlichny inequality for those classes of pure states. Besides, the $99$-th facet inequality is found efficient not only for revealing genuine nonlocal behavior of correlations emerging in systems using pure entangled states but also in some cases of mixed entangled states over Svetlichny inequality and some well known measures of entanglement .
description: 16 pages, 11 figures, 2 tables, revtex, comments welcome, to appear in J.Phys. A
MELA/MELA/MELA/MELA! Melán/cho/lía… Dal Bencomune alle Fleurs du Mal
Creators: name: Schiera, Pierangelo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2020
Subjects: SPS/01 Filosofia politica
SPS/02 Storia delle dottrine politiche

description: Il Deposito di Scienza & Politica è uno spazio in cui pubblicare testi che possono essere dei preprint, dei work in progress o anche dei testi definitivi che si vogliono affidare all’uso comune dei lettori. Si tratta di testi non sottoposti a referaggio, senza nessuna registrazione, che rimangono a disposizione di chi li voglia leggere e utilizzare.
Incidence of seropositive and seronegative rheumatoid arthritis in Denmark: a nationwide population-based study
Creators: name: Soussi, BG
name: Cordtz, RL
name: Duch, K
name: Kristensen, S
name: Prieto-Alhambra, D
name: Linauskas, A
name: Bork, CS
name: Schmidt, EB
name: Dreyer, L
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: To investigate and compare trends in incidence rates (IRs) of seropositive and seronegative rheumatoid arthritis (RA) in Denmark using various data sources for serostatus definition. This nationwide population-based cohort study was based on data from Danish healthcare and clinical quality registries between 2000 and 2018. Information on anti-cyclic citrullinated peptide and immunoglobulin M rheumatoid factor was obtained, and definitions of seropositivity according to the number of applied data sources were prespecified. Annual age- and sex-standardized IRs were calculated as the number of incident seropositive and seronegative cases, divided by the number of person-years (PY) in the general population in that given year. An increasing temporal trend in IR of seropositive RA and a decreasing trend in seronegative RA were observed. The IRs were higher for seropositive RA than for seronegative RA from 2009 onwards, with a widening of the IR gap between 2009 and 2016 regardless of the definition of seropositivity. When combining laboratory- and physician-reported autoantibody information and ICD-10 codes, the IR of seropositive RA in 2018 was approximately twice that of seronegative RA, at 19.0 and 9.0 per 100 000 PY, respectively. The level of antibody testing increased significantly during the study period. The IR of seropositive RA increased over time, whereas the IR of seronegative RA decreased. Temporal IR changes may be caused by a real change in the RA serology subtypes, an increase in autoantibody testing and availability, changes in registration practice over time, or a combination of these factors.
Hydrogenation of terminal and internal olefins using a biowaste-derived heterogeneous cobalt catalyst
Creators: name: Scharnagl, Florian Korbinian
name: Hertrich, Maximilian Franz
name: Ferretti, Francesco
name: Kreyenschulte, Carsten
name: Lund, Henrik
name: Jackstell, Ralf
name: Beller, Matthias
Publisher: name: Washington, DC [u.a.] : Assoc.
Year: 2018
Subjects: subject: liquid-phase hydrogenation
subject: asymmetric alkene hydrogenation
subject: metal-organic frameworks
subject: homogeneous hydrogenation
subject: selective hydrogenation
subject: complexes
subject: nitroarenes
subject: isooctenes
subject: efficient
subject: kinetics
subject: 500

description: Hydrogenation of olefins is achieved using biowaste-derived cobalt chitosan catalysts. Characterization of the optimal Co@Chitosan-700 by STEM (scanning transmission electron microscopy), EELS (electron energy loss spectroscopy), PXRD (powder x-ray diffraction), and elemental analysis revealed the formation of a distinctive magnetic composite material with high metallic Co content. The general performance of this catalyst is demonstrated in the hydrogenation of 50 olefins including terminal, internal, and functionalized derivatives, as well as renew-ables. Using this nonnoble metal composite, hydrogenation of terminal C==C double bonds occurs under very mild and benign conditions (water or methanol, 40° to 60°C). The utility of Co@Chitosan-700 is showcased for efficient hydrogenation of the industrially relevant examples diisobutene, fatty acids, and their triglycerides. Because of the magnetic behavior of this material and water as solvent, product separation and recycling of the catalyst are straightforward.
Archiving Student Thesis Data
Creators: name: Marcoux, Katherine
name: de Laat, Stijn
name: Jansen, Daphne
name: Lamers, Didi
name: Slouwerhof, Inge
name: van der Burgt, Henry
Publisher: name: Zenodo
Year: 2023
Subjects: RDM
research data
data management
research data management
data organisation
archiving
students

description: The document “Archiving Student Thesis Data” gives an overview of what bachelor and master students should know when archiving their thesis data. It covers what research data are and what should be archived for scientific integrity.
A relative of Hadwiger's conjecture
Creators: name: Edwards, Katherine
name: Kang, Dong Yeap
name: Kim, Jaehoon
name: Oum, Sang-il
name: Seymour, Paul
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C83, 05C15

description: Hadwiger's conjecture asserts that if a simple graph $G$ has no $K_{t+1}$ minor, then its vertex set $V(G)$ can be partitioned into $t$ stable sets. This is still open, but we prove under the same hypotheses that $V(G)$ can be partitioned into $t$ sets $X_1,\ldots, X_t$, such that for $1\le i\le t$, the subgraph induced on $X_i$ has maximum degree at most a function of $t$. This is sharp, in that the conclusion becomes false if we ask for a partition into $t-1$ sets with the same property.
description: 6 pages
Atenção on-line e dados de citação de pesquisas com temáticas étnico-raciais: um comparativo entre publicações sobre afrodescendentes brasileiros e americanos
Creators: name: Santos, Sarah Rúbia De Oliveira
name: Araujo, Ronaldo
Publisher: name: figshare
Year: 2020
Subjects: subject: 80705 Informetrics
subject: FOS: Media and communications
subject: 80706 Librarianship
subject: Library and Information Studies
subject: 160803 Race and Ethnic Relations
subject: FOS: Sociology

description: O objetivo desta pesquisa é identificar o que se produz sobre a questão étnico-racial e compreender seus impactos dentro e fora da academia, no primeiro caso com as citações, e no segundo, com a circulação dessas pesquisas nas mídias sociais. Para subsidiar esta comparação e verificar a atenção on-line que artigos com esta temática recebem, serão investigados os indicadores bibliométricos e altmétricos das publicações.
Artigo apresentado no 7º Encontro Brasileiro de Bibliometria e Cientometria, Salvador/BA, 2020. ISSN 2675-5939

Citação:
SANTOS, Sarah Rúbia de Oliveira; ARAÚJO, Ronaldo Ferreira. Atenção on-line e dados de citação de pesquisas com temáticas étnico-raciais: um comparativo entre publicações sobre afrodescendentes brasileiros e americanos. In: ENCONTRO BRASILEIRO DE BIBLIOMETRIA E CIENTOMETRIA, 7. Salvador, 2020. Disponível em: https://figshare.com/articles/conference_contribution/Aten_o_on-line_e_dados_de_cita_o_de_pesquisas_com_tem_ticas_tnico-raciais_um_comparativo_entre_publica_es_sobre_afrodescendentes_brasileiros_e_americanos/13224380. Acesso em: xxxx. DOI https://doi.org/10.6084/m9.figshare.13224380.v1
Intermetallic nickel silicide nanocatalyst—A non-noble metal–based general hydrogenation catalyst
Creators: name: Ryabchuk, Pavel
name: Agostini, Giovanni
name: Pohl, Marga-Martina
name: Lund, Henrik
name: Agapova, Anastasiya
name: Junge, Henrik
name: Junge, Kathrin
name: Beller, Matthias
Publisher: name: Washington, DC [u.a.] : Assoc.
Year: 2018
Subjects: subject: Agricultural chemicals
subject: Carbon
subject: Chemical industry
subject: Hydrogenation
subject: Indicators (chemical)
subject: Intermetallics
subject: Molecular oxygen
subject: Nanocatalysts
subject: Nickel
subject: Nickel compounds
subject: Precious metals
subject: Reduction
subject: Silica
subject: Silicides
subject: Silicon oxides
subject: Unsaturated compounds
subject: 500

description: Hydrogenation reactions are essential processes in the chemical industry, giving access to a variety of valuable compounds including fine chemicals, agrochemicals, and pharmachemicals. On an industrial scale, hydrogenations are typically performed with precious metal catalysts or with base metal catalysts, such as Raney nickel, which requires special handling due to its pyrophoric nature. We report a stable and highly active intermetallic nickel silicide catalyst that can be used for hydrogenations of a wide range of unsaturated compounds. The catalyst is prepared via a straightforward procedure using SiO2 as the silicon atom source. The process involves thermal reduction of Si–O bonds in the presence of Ni nanoparticles at temperatures below 1000°C. The presence of silicon as a secondary component in the nickel metal lattice plays the key role in its properties and is of crucial importance for improved catalytic activity. This novel catalyst allows for efficient reduction of nitroarenes, carbonyls, nitriles, N-containing heterocycles, and unsaturated carbon–carbon bonds. Moreover, the reported catalyst can be used for oxidation reactions in the presence of molecular oxygen and is capable of promoting acceptorless dehydrogenation of unsaturated N-containing heterocycles, opening avenues for H2 storage in organic compounds. The generality of the nickel silicide catalyst is demonstrated in the hydrogenation of over a hundred of structurally diverse unsaturated compounds. The wide application scope and high catalytic activity of this novel catalyst make it a nice alternative to known general hydrogenation catalysts, such as Raney nickel and noble metal–based catalysts.
Innovative Countermeasures to Defeat Cyber Attacks Against Blockchain Wallets: A Crypto Terminal Use Case
Creators: name: Urien, Pascal
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Blockchain transactions are signed by private keys. Secure key storage and tamper-proof computers are essential requirements for deploying a trusted infrastructure. In this paper, we identify some threats against blockchain wallets and propose a set of physical and logical countermeasures to thwart them. We present the crypto terminal device, operating with a removable secure element, built on open software and hardware architectures, capable of detecting a cloned device or corrupted software. These technologies are based on tamper-resistant computing (javacard), smart card anti-cloning, smart card content attestation, application firewall, bare-metal architecture, remote attestation, dynamic Physical Unclonable Function (dPUF), and programming tokens as a root of trust.This paper is an extended version of the paper ''Innovative Countermeasures to Defeat Cyber Attacks Against Blockchain Wallets,'' 2021 5th Cyber Security in Networking Conference (CSNet), 2021, pp. 49-54, doi: 10.1109/CSNet52717.2021.9614649
The Development of Explosions in Axisymmetric Ab Initio Core-Collapse Supernova Simulations of 12-25 $M_\odot$ Stars
Creators: name: Bruenn, Stephen W.
name: Lentz, Eric J.
name: Hix, W. Raphael
name: Mezzacappa, Anthony
name: Harris, James Austin
name: Messer, O. E. Bronson
name: Endeve, Eirik
name: Blondin, John M.
name: Chertkow, Merek Austin
name: Lingerfelt, Eric J.
name: Marronetti, Pedro
name: Yakunin, Konstantin N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present four ab initio axisymmetric core-collapse supernova simulations for 12, 15, 20, and 25 $M_\odot$ progenitors. All of the simulations yield explosions and have been evolved for at least 1.2 seconds after core bounce and 1 second after material first becomes unbound. Simulations were computed with our Chimera code employing spectral neutrino transport, special and general relativistic transport effects, and state-of-the-art neutrino interactions. Continuing the evolution beyond 1 second allows explosions to develop more fully and the processes powering the explosions to become more clearly evident. We compute explosion energy estimates, including the binding energy of the stellar envelope outside the shock, of 0.34, 0.88, 0.38, and 0.70 B ($10^{51}$ ergs) and increasing at 0.03, 0.15, 0.19, and 0.52 B s$^{-1}$, respectively, for the 12, 15, 20, and 25 $M_\odot$ models. Three models developed pronounced prolate shock morphologies, while the 20 $M_\odot$ model, though exhibiting lobes and accretion streams like the other models, develops an approximately spherical, off-center shock as the explosion begins and then becomes moderately prolate $\sim$600 ms after bounce. This reduces the explosion energy relative to the other models by reducing mass accretion during the critical explosion power-up phase. We examine the growth of the explosion energy in our models through detailed analyses of the energy sources and flows. We find that the 12 and 20 $M_\odot$ models have explosion energies comparable to that of the lower range of observed explosion energies while the 15 and 25 $M_\odot$ models are within the range of observed explosion energies, particularly considering the rate at which their explosion energies are increasing. The ejected $^{56}$Ni masses given by our models are all within observational limits as are the proto-neutron star masses and kick velocities. (Truncated)
description: 39 pages, 29 figures, accepted for publicatoin in The Astrophysical Journal, additional animations available at ChimeraSN.org
Self-organized stress patterns drive state transitions in actin cortices
Creators: name: Tan, Tzer Han
name: Malik-Garbi, Maya
name: Abu-Shah, Enas
name: Li, Junang
name: Sharma, Abhinav
name: MacKintosh, Fred C.
name: Keren, Kinneret
name: Schmidt, Christoph F.
name: Fakhri, Nikta
Publisher: name: Washington, DC [u.a.] : Assoc.
Year: 2018
Subjects: subject: Biological functions
subject: Collective dynamics
subject: Cross-link densities
subject: Non-equilibrium steady state
subject: Nonequilibrium system
subject: Ordered structures
subject: Self organizations
subject: Structural symmetry
subject: flow patterns
subject: 500

description: Biological functions rely on ordered structures and intricately controlled collective dynamics. This order in living systems is typically established and sustained by continuous dissipation of energy. The emergence of collective patterns of motion is unique to nonequilibrium systems and is a manifestation of dynamic steady states. Mechanical resilience of animal cells is largely controlled by the actomyosin cortex. The cortex provides stability but is, at the same time, highly adaptable due to rapid turnover of its components. Dynamic functions involve regulated transitions between different steady states of the cortex. We find that model actomyosin cortices, constructed to maintain turnover, self-organize into distinct nonequilibrium steady states when we vary cross-link density. The feedback between actin network structure and organization of stress-generating myosin motors defines the symmetries of the dynamic steady states. A marginally cross-linked state displays divergence-free long-range flow patterns. Higher cross-link density causes structural symmetry breaking, resulting in a stationary converging flow pattern. We track the flow patterns in the model actomyosin cortices using fluorescent single-walled carbon nanotubes as novel probes. The self-organization of stress patterns we have observed in a model system can have direct implications for biological functions.
Dynamics of cosmic strings with higher-dimensional windings
Creators: name: Yamauchi, Daisuke
name: Lake, Matthew J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider F-strings with arbitrary configurations in the Minkowski directions of a higher-dimensional spacetime, which also wrap and spin around $S^1$ subcycles of constant radius in an arbitrary internal manifold, and determine the relation between the higher-dimensional and the effective four-dimensional quantities that govern the string dynamics. We show that, for any such configuration, the motion of the windings in the compact space may render the string effectively tensionless from a four-dimensional perspective, so that it remains static with respect to the large dimensions. Such a critical configuration occurs when (locally) exactly half the square of the string length lies in the large dimensions and half lies in the compact space. The critical solution is then seen to arise as a special case, in which the wavelength of the windings is equal to their circumference. As examples, long straight strings and circular loops are considered in detail, and the solutions to the equations of motion that satisfy the tensionless condition are presented. These solutions are then generalized to planar loops and arbitrary three-dimensional configurations. Under the process of dimensional reduction, in which higher-dimensional motion is equivalent to an effective worldsheet current (giving rise to a conserved charge), this phenomenon may be seen as the analogue of the tensionless condition which arises for superconducting and chiral-current carrying cosmic strings.
description: 15 pages, no figures. Published version
A note on classical and quantum unimodular gravity
Creators: name: Padilla, Antonio
name: Saltas, Ippocratis D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss unimodular gravity at a classical level, and in terms of its extension into the UV through an appropriate path integral representation. Classically, unimodular gravity is simply a gauge fixed version of General Relativity (GR), and as such it yields identical dynamics and physical predictions. We clarify this and explain why there is no sense in which it can "bring a new perspective" to the cosmological constant problem. The quantum equivalence between unimodular gravity and GR is more of a subtle question, but we present an argument that suggests one can always maintain the equivalence up to arbitrarily high momenta. As a corollary to this, we argue that whenever inequivalence is seen at the quantum level, that just means we have defined two different quantum theories that happen to share a classical limit.
description: 5 pages; v2: Some clarifying comments added. Version to appear in European Physical Journal C
171: The easiest person to fool is yourself (with Daniel Simons and Christopher Chabris)
Creators: name: Heathers, James
name: Quintana, Daniel
Publisher: name: Open Science Framework
Year: 2023

description: We chat with Daniel Simons and Christopher Chabris about the science of cons and how we can we can avoid being taken in. We also cover the fate of the gorilla suit from the 'invisible gorilla' study, why scientists are especially prone to being fooled, plus more!
Input & Output Standardization Efforts
Creators: name: Huebl, Axel
name: Community, The OpenPMD
Publisher: name: Zenodo
Year: 2020

description: Open frameworks and tools in plasma physics provide potential for complex, cross-domain modeling and analysis activities. Connecting those, standardization efforts aid compatibility and improve usability. We present openPMD (open standard for particle-mesh data files) and PICMI (particle-in-cell modeling interface) as two projects focusing on data and software input compatibility.
description: This project has received funding from the European Unions Horizon 2020 research and innovation programme under grant agreement No 654220. Supported by the Consortium for Advanced Modeling of Particles Accelerators (CAMPA), funded by the U.S. DOE Office of Science under Contract No. DE-AC02-05CH11231. Supported by the Exascale Computing Project (17-SC-20-SC), a collaborative effort of two U.S. Department of Energy organizations (Office of Science and the National Nuclear Security Administration). Work performed under the auspices for LLNL, contract no. DE-AC52-07NA27344. This work was partially funded by the Center of Advanced Systems Understanding (CASUS) which is financed by Germany's Federal Ministry of Education and Research (BMBF) and by the Saxon Ministry for Science, Culture and Tourism (SMWK) with tax funds on the basis of the budget approved by the Saxon State Parliament.
Improved Estimates of the Milky Way's Stellar Mass and Star Formation Rate from Hierarchical Bayesian Meta-Analysis
Creators: name: Licquia, Timothy C.
name: Newman, Jeffrey A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present improved estimates of several global properties of the Milky Way, including its current star formation rate (SFR), the stellar mass contained in its disk and bulge+bar components, as well as its total stellar mass. We do so by combining previous measurements from the literature using a hierarchical Bayesian (HB) statistical method that allows us to account for the possibility that any value may be incorrect or have underestimated errors. We show that this method is robust to a wide variety of assumptions about the nature of problems in individual measurements or error estimates. Ultimately, our analysis yields a SFR for the Galaxy of $\dot{\mathrm{M}}_\star=1.65\pm0.19$ $\textrm{M}_\odot \textrm{yr}^{-1}$, assuming a Kroupa initial mass function (IMF). By combining HB methods with Monte Carlo simulations that incorporate the latest estimates of the Galactocentric radius of the Sun, $R_0$, the exponential scale length of the disk, $L_d$, and the local surface density of stellar mass, $Σ_\star(R_0)$, we show that the mass of the Galactic bulge+bar is $\textrm{M}_\star^B=0.91\pm0.07\times10^{10}$ $\textrm{M}_\odot$, the disk mass is $\textrm{M}_\star^D=5.17\pm1.11\times10^{10}$ $\textrm{M}_\odot$, and their combination yields a total stellar mass of $\textrm{M}_\star=6.08\pm1.14\times10^{10}$ $\textrm{M}_\odot$ (assuming a Kroupa IMF and an exponential disk profile). This analysis is based upon a new compilation of literature bulge mass estimates, normalized to common assumptions about the stellar initial mass function and Galactic disk properties, presented herein. We additionally find a bulge-to-total mass ratio for the Milky Way of $B/T=0.150^{+0.028}_{-0.019}$ and a specific star formation rate of $\dot{\mathrm{M}}_\star/\textrm{M}_\star=2.71\pm0.59\times10^{-11} \textrm{yr}^{-1}$.
description: 21 pages, 8 figures, 6 tables, 1 appendix
The Alienated Intellectual and Narratives of Ungroundedness: A Comparative Study inTwentieth-Century Fiction
Creators: name: S. Moussa, Khaled
Publisher: name: University of Leicester
Year: 2024

description: The intellectual’s task of exposing the errors and injustices of society and their commitment to truth had long been sustained through Enlightenment ideals such as universality and reason. However, the twentieth century witnessed an unprecedented undermining of the traditional image of the autonomous intellectual whose responsibility is to the speaking of truth to power. This precarious position was precipitated by the professionalization of intellectuals and the relativization of truth which eroded their authority. In this new political and intellectual climate where claims to universal truth are no longer tenable, the intellectual must find a new type of impersonal discourse which unmasks the prejudices and errors of their society. This thesis explores modernist mythopoeia as a suitable type of narrative for the modern intellectual because its simultaneous reference to belief and falsehood eschews truth-claims in that it commits to neither the language of religious dogma nor that of materialistic secularism. Each chapter is a detailed analysis of James Joyce’s A Portrait of the Artist as a Young Man (1916), Naguib Mahfouz’s Children of the Alley (1959), D. H. Lawrence’s Women in Love (1920), and Salman Rushdie’s The Satanic Verses (1988) respectively. In a post-mythic world where nothing can be transcendentally grounded, modernist mythmaking is a self-grounding aesthetic form through which the intellectual portrays their predicament and their ambivalent attitudes towards the social, political, or religious issues they criticize. What forms a continuity among the writers discussed in this thesis is their double awareness of the inescapable condition of inhabiting a world of one’s own creation. The use of myth by these writers is not in terms of content but that of being the metaphysic or condition underlying their worldviews. This thesis brings an original contribution to modernist scholarship by revisiting the view that modernism is characterised by an iconoclastic rebellion against the past. The novels examined in this thesis are narratives of ungroundedness which exhibit an ambivalent attitude towards myth’s dynamic tension between progression and regression.
Stress adapted embroidered meshes with a graded pattern design for abdominal wall hernia repair
Creators: name: Hahn, J.
name: Bittrich, L.
name: Breier, A.
name: Spickenheuer, A.
Publisher: name: London [u.a.] : Institute of Physics
Year: 2017
Subjects: subject: Abdominal wall hernia
subject: Anisotropic behaviours
subject: Fabrication method
subject: Mechanical behaviour
subject: Mechanical characteristics
subject: Pattern generator
subject: Reinforcement patterns
subject: Stress strain behaviours
subject: Konferenzschrift
subject: 530

description: Abdominal wall hernias are one of the most relevant injuries of the digestive system with 25 million patients in 2013. Surgery is recommended primarily using allogenic non-absorbable wrap-knitted meshes. These meshes have in common that their stress-strain behaviour is not adapted to the anisotropic behaviour of native abdominal wall tissue. The ideal mesh should possess an adequate mechanical behaviour and a suitable porosity at the same time. An alternative fabrication method to wrap-knitting is the embroidery technology with a high flexibility in pattern design and adaption of mechanical properties. In this study, a pattern generator was created for pattern designs consisting of a base and a reinforcement pattern. The embroidered mesh structures demonstrated different structural and mechanical characteristics. Additionally, the investigation of the mechanical properties exhibited an anisotropic mechanical behaviour for the embroidered meshes. As a result, the investigated pattern generator and the embroidery technology allow the production of stress adapted mesh structures that are a promising approach for hernia reconstruction.