cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Atherosclerotic Aortic Arch Plaques in Acute Ischemic Stroke
Creators: name: Zeenat Qureshi Stroke Institutes
Publisher: name: Zenodo
Year: 2023

description: Background:
Atherosclerotic aortic arch plaques (AAP) have been linked to an increased risk of thrombo-embolic events as a cause of acute ischemic stroke of undetermined etiology.
Objectives:
To find out the presence of atherosclerotic plaques in aortic arch and their potential role as a source of embolism in cerebral infarction of undetermined etiology.
Methods:
We performed trans-esophageal echocardiography (TEE) and multislice computerized tomography (MSCT) of the aortic arch on 30 patients with acute ischemic stroke of undetermined cause from a total series of 150 non-selected patients with acute ischemic stroke studied prospectively by clinical evaluation, laboratory investigations, cranial computed tomography, color coded duplex ultrasonography of the carotid arteries and transcranial Doppler (TCD).
Results:
Using trans-esophageal echocardiography eight patients (29.6%) had atherosclerotic aortic arch plaques, while using multislice computerized tomography atherosclerotic aortic arch plaques were revealed in twelve patients (40%). Atherosclerotic aortic arch plaques were significantly related to older age, male gender, hypertension, ischemic heart disease and low-grade atherosclerotic carotid lesions. Multislice computerized tomography of the aortic arch was more sensitive than trans-esophageal echocardiography in detecting the site, size and characters of atherosclerotic aortic arch plaques.
Conclusion:
Atherosclerotic aortic arch plaques are a frequent finding in patients with acute ischemic stroke of undetermined cause supporting the hypothesis that aortic plaques have embolic potential. In addition, multislice computerized tomography is more sensitive than trans-esophageal echocardiography in detecting atherosclerotic aortic arch plaques and better characterization of these plaques especially relevant one.
Representing and learning relations and properties under uncertainty
Creators: name: Kazemi, Seyed Mehran
Publisher: name: University of British Columbia
Year: 2018

description: The world around us is composed of entities, each having various properties and participating in relationships with other entities. Consequently, data is often inherently relational. This dissertation studies probabilistic relational representations, reasoning and learning with a focus on three common prediction problems for relational data: link prediction, property prediction, and joint prediction. For link prediction, we develop a tensor factorization model called SimplE which is simple, interpretable, fully-expressive, and integratable with certain types of domain expert knowledge. On two standard benchmarks for knowledge graph completion, we show how SimplE outperforms the state-of-the-art models. For property prediction, first we study the limitations of the existing StaRAI models when being used for property prediction. Based on this study, we develop relational neural networks which combine ideas from lifted relational models with deep learning and perform well empirically. We base the joint prediction on lifted relational models for which parameter learning typically requires inference over a highly-connected graphical model. The inference step is usually the bottleneck for learning. We study a class of inference algorithms known as lifted inference which makes inference tractable by exploiting both conditional independence and symmetries. We study two ways of speeding up lifted inference algorithms: 1- through proposing heuristics for elimination ordering and 2- through compiling the lifted operations to low-level languages. We also expand the largest known class of models for which we know how to do efficient lifted inference. Thus, structure learning algorithms for lifted relational models that restrict the search space to models for which efficient inference algorithms exist can perform their search over a larger space.
From black holes to emergent gravity
Creators: name: Banerjee, Rabin
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Many inequivalent approaches to study black holes yield identical results. Any meaningful theory of gravity should explain the origin of this property. Here we show that the basic holomorphic modes characterising the underlying two dimensional conformal symmetry near the horizon bring about this universality. Moreover these modes lead to a law of equipartition of energy for black holes which suggests a statistical origin of gravity. This emergent nature of gravity is further bolstered by showing the equivalence of entropy with the action $\left(S=-\frac{i}{\hbar}\,I\right)$ and expressing the generalised Smarr formula for mass as a thermodynamic relation, $S=\frac{E}{2T}$ where $S$, $E$ and $T$ are the entropy, energy and temperature, respectively, of a black hole.
description: Latex, 6 pages, Gravity Research Foundation essay 2010 (Received Honorable Mention)
A Pregnant Woman With Flawless Shaped Stellate Cataract
Creators: name: Ekici, Ömer
Publisher: name: Zenodo
Year: 2023
Subjects: Blunt trauma
Pregnancy
Star shaped cataract

description: Traumatic cataracts can develop following either penetrating or blunt ocular trauma. Cataracts can form rapidly or gradually following blunt trauma. One of the clinical presentations of blunt traumatic cataracts can be also star (stellate) or rosette-shaped appearance. Satellate cataract is uncommon. In this case, a 32-year-old pregnant patient, who was diagnosed with an almost perfect star-shaped stellate cataract due to the complaint of low vision that started after blunt trauma in the right eye, was presented.
Missing Data Imputation and Corrected Statistics for Large-Scale Behavioral Databases
Creators: name: Courrieu, Pierre
name: Rey, Arnaud
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: This paper presents a new methodology to solve problems resulting from missing data in large-scale item performance behavioral databases. Useful statistics corrected for missing data are described, and a new method of imputation for missing data is proposed. This methodology is applied to the DLP database recently published by Keuleers et al. (2010), which allows us to conclude that this database fulfills the conditions of use of the method recently proposed by Courrieu et al. (2011) to test item performance models. Two application programs in Matlab code are provided for the imputation of missing data in databases, and for the computation of corrected statistics to test models.
description: Behavior Research Methods (2011) in press
INVESTIGATION OF ROTATING DETONATION PHYSICS AND DESIGN OF A MIXER FOR A ROTATING DETONATION ENGINE
Creators: name: Grunenwald, John Andrew
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 400199
subject: Aerospace engineering not elsewhere classified
classificationCode: 401201
subject: Aerodynamics (excl. hypersonic aerodynamics)
classificationCode: 401706
subject: Numerical modelling and mechanical characterisation

description: A fast model of a Rotating Detonation Combustor (RDC) is developed based on the Method of Characteristics (MOC). The model provides a CFD-like solution of an unwrapped 2D RDC flow field in under 10 seconds with similar fidelity as 2D Reacting URANS simulations. Parametric studies are conducted using the simplified model, and the trends are analyzed to gain insight into the underlying physics of rotating detonation combustors. A methodology to assess the performance of operation with multiple waves is presented. The main effect of increasing waves is found to be the increase in the exit Mach number of the combustion chamber. The design process of a mixer component is also presented. The mixer lies downstream of a channel-cooled RDC with subsonic exit and upstream of a Rolls-Royce M250 helicopter engine in open-loop configuration. The mixer dilutes the RDC exhaust with approximately 250% air to condition the flow for the M250 turbine at steady state operation, while also acting as an isolator with a choked throat to prevent back propagation of pressure waves. The mixer aerodynamic design was completed using 2D axisymmetric RANS simulations, and the mechanical design was evaluated using Ansys Mechanical FEA and was found to be able to survive the high thermal stresses present both during the transient heating and steady state operating condition.
Scale for the Phase Diagram of Quantum Chromodynamics
Creators: name: Gupta, Sourendu
name: Luo, Xiaofeng
name: Mohanty, Bedangadas
name: Ritter, Hans Georg
name: Xu, Nu
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Matter described by Quantum Chromodynamics (QCD), the theory of strong interactions, may undergo phase transitions when its temperature and the chemical potentials are varied. QCD at finite temperature is studied in the laboratory by colliding heavy-ions at varying beam energies. We present a test of QCD in the non-perturbative domain through a comparison of thermodynamic fluctuations predicted in lattice computations with the experimental data of baryon number distributions in high-energy heavy-ion collisions. This study provides evidence for thermalization in these collisions, and allows us to find the crossover temperature between normal nuclear matter and a deconfined phase called the quark gluon plasma. This value allows us to set a scale for the phase diagram of QCD.
description: 16 pages and 4 figures. Accepted for publication in Science
Participation is not enough. Learnings on cooperation from the SoCiS project
Creators: name: Göbel, Claudia
Publisher: name: Zenodo
Year: 2021
Subjects: Citizen Science
Citizen Social Science
Participatory research
Cooperation

description: I gave the presentation as part of the Citizen Social Science school organised by the CoAct EU project in September 2021. Literature and guidelines for Citizen (Social) Science - C(S)S - focus on participation of non-professional researchers in science. The address how to motivate participants, how to ensure scientific standards, what technologies and methodologies can help, etc. But this participation doesn’t happen in a vacuum. However, we don’t know and talk much about the contexts that are needed to make C(S)S activities work. This is what we have analysed as part of a two-year study on participatory research in the fields of humanities and social sciences (our definition of CSS) in Germany. We found that CSS activities very often happen in diverse projects of various groups of academic and non-academic people and organisations. These consortia influence how participation works. I will introduce the notion of ‘cooperation capacity’ to work further with these observations, highlight various aspects important for cooperation capacity and give examples from CSS projects. This shift in attention - from the participation of individuals to cooperation on a collective level - brings to sight additional actors and activities that are mostly not, or only marginally, considered. They are important for making C(S)S successful in terms of impact and meaningful for those involved.
Simulation of structural phase transitions in NiTi
Creators: name: Mutter, Daniel
name: Nielaba, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By means of molecular-dynamics simulations, temperature driven diffusionless structural phase transitions in equi- and nearly equiatomic ordered nickel-titanium alloys were investigated. For this purpose, a model potential from the literature was adopted [W.S. Lai and B.X. Liu, J. Phys. Condens. Matter 12, L53 (2000)], which is based on the tight-binding model in second moment approximation. The model predicts a stable B19' phase at low temperatures and a nearly cubic B2 phase at high temperatures. After an analysis of crystallography and energetics of the emerging structures, the experimentally known strong dependence of transition temperatures on composition is confirmed and related to lattice instability. Free energy calculations finally give insight into the driving forces of the phase transitions, and reveal free energy barriers inhibiting them below the transition temperatures.
description: 12 pages, 10 figures, to be published in Physical Review B
Worldwide spreading of economic crisis
Creators: name: Garas, Antonios
name: Argyrakis, Panos
name: Rozenblat, Celine
name: Tomassini, Marco
name: Havlin, Shlomo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We model the spreading of a crisis by constructing a global economic network and applying the Susceptible-Infected-Recovered (SIR) epidemic model with a variable probability of infection. The probability of infection depends on the strength of economic relations between the pair of countries, and the strength of the target country. It is expected that a crisis which originates in a large country, such as the USA, has the potential to spread globally, like the recent crisis. Surprisingly we show that also countries with much lower GDP, such as Belgium, are able to initiate a global crisis. Using the {\it k}-shell decomposition method to quantify the spreading power (of a node), we obtain a measure of ``centrality'' as a spreader of each country in the economic network. We thus rank the different countries according to the shell they belong to, and find the 12 most central countries. These countries are the most likely to spread a crisis globally. Of these 12 only six are large economies, while the other six are medium/small ones, a result that could not have been otherwise anticipated. Furthermore, we use our model to predict the crisis spreading potential of countries belonging to different shells according to the crisis magnitude.
description: 13 pages, 4 figures and Supplementary Material
title: Exploring the development of self and sense of belonging among young people with intellectual disabilities in mainstream school and further education college
Creators: name: Johnson, Maria
Publisher: name: University of Glasgow
Year: 2021
Subjects: subject: Intellectual disabilities, self-concept, education.

description: Background: There are many factors which may impact on the self-concept of children with intellectual disabilities. With greater inclusion of children with intellectual disabilities into mainstream education, it is important to understand how these experiences impact on their self-perceptions. This review provides a narrative synthesis on the literature. Method: A search of relevant electronic databases was completed. Six studies met the inclusion criteria for this review. Each paper’s method was rated for quality using the Johanne Briggs Institute quality appraisal tool. Results: Synthesis of the results highlighted mixed findings for global selfconcept and social self-concept scores among children with intellectual disabilities, and lower academic self-concept scores. Discussion: This review discussed limitations in the existing literature, and implications for education and national policies. Future studies should aim to address methodological weaknesses in order to clarify global and social selfperceptions within this population.
Production and manipulation of stable frozen hydrogen filaments
Creators: name: Froning, Jost
name: Mannweiler, Christian
name: Hausch, Eva-Maria
name: Hannen, Anna-Luna
name: Khoukaz, Alfons
Publisher: name: arXiv
Year: 2025
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Frozen hydrogen filaments or droplets/pellets in vacuum are of great interest as target for many experiments at hadron and lepton accelerators as well as at high-power laser systems. Especially in case of large distances between the position of target beam generation and the interaction point with an accelerator or laser beam, a high target beam stability in space and time is crucial. Here we present recent results on the long-term stability of frozen hydrogen filaments in vacuum, which have been obtained using a new cryogenic target generator. It could be shown that the trajectory of the frozen hydrogen target beam with a diameter of $10\,\mathrm{μm}$ remains stable for over 60 hours, with angular fluctuations below $0.08\,^\circ$. Furthermore, we present a novel strategy for the manipulation of the target beam, named cryobending. Here, the produced hydrogen filament is deflected by helium gas emerging from correction nozzles. We demonstrate the deflection of the hydrogen beam with one and two nozzles, achieving deflection angles up to $(15.7\pm 0.4)\,^\circ$. The presented results open the door for further developments of this beam position system, which enables target beam adjustment without any mechanical movement of the target components itself. Potential applications of these stable hydrogen target filaments are, e.g., the upcoming MAGIX (MAinz Gas Injection target eXperiment) or the planned $\mathrm{\bar{P}ANDA}$ (anti-Proton ANnihilation at DArmstadt) experiment.
description: 12 pages, 10 figures, to be published in Nucl. Instr. Meth. A
Real space estimator for the weak lensing convergence from the CMB
Creators: name: Carvalho, C. S.
name: Moodley, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose an estimator defined in real space for the reconstruction of the weak lensing potential due to the intervening large scale structure from high resolution maps of the cosmic microwave background. This estimator was motivated as an alternative to the quadratic estimator in harmonic space to surpass the difficulties of the analysis of maps containing galactic cuts and point source excisions. Using maps synthesised by pixel remapping, we implement the estimator for two experiments, namely one in the absence and one in the presence of detector noise, and compare the reconstruction of the convergence field with that obtained with the quadratic estimator defined in harmonic space. We find good agreement between the input and the reconstructed power spectra using the proposed real space estimator. We discuss interesting features of the real space estimator and future extensions of this work.
description: 25 pages, 8 figures. Accepted for publication in PRD
Noncausal Page-Wootters circuits
Creators: name: Baumann, Veronika
name: Krumm, Marius
name: Guérin, Philippe Allard
name: Brukner, Časlav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: One of the most fundamental open problems in physics is the unification of general relativity and quantum theory to a theory of quantum gravity. An aspect that might become relevant in such a theory is that the dynamical nature of causal structure present in general relativity displays quantum uncertainty. This may lead to a phenomenon known as indefinite or quantum causal structure, as captured by the process matrix formalism. Due to the generality of that framework, however, for many process matrices there is no clear physical interpretation. A popular approach towards a quantum theory of gravity is the Page-Wootters formalism, which associates to time a Hilbert space structure similar to spatial position. By explicitly introducing a quantum clock, it allows to describe time-evolution of systems via correlations between this clock and said systems encoded in history states. In this paper we combine the process matrix framework with a generalization of the Page-Wootters formalism in which one considers several agents, each with their own discrete quantum clock. We describe how to extract process matrices from scenarios involving such agents with quantum clocks, and analyze their properties. The description via a history state with multiple clocks imposes constraints on the implementation of process matrices and on the perspectives of the agents as described via causal reference frames. While it allows for scenarios where different definite causal orders are coherently controlled, we explain why certain noncausal processes might not be implementable within this setting.
description: New title. Close to published version. Veronika Baumann and Marius Krumm share first authorship of this paper
Topological Fermi liquids from Coulomb interactions in the doped Honeycomb lattice
Creators: name: Castro, Eduardo V.
name: Grushin, Adolfo G.
name: Valenzuela, Belén
name: Vozmediano, María A. H.
name: Cortijo, Alberto
name: de Juan, Fernando
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We get an anomalous Hall metallic state in the Honeycomb lattice with nearest neighbors only arising as a spontaneously broken symmetry state from a local nearest neighbor Coulomb interaction V . The key ingredient is to enlarge the unit cell to host six atoms that permits Kekulé distortions and supports self-consistent currents creating non trivial magnetic configurations with total zero flux. We find within a variational mean field approach a metallic phase with broken time reversal symmetry (T) very close in parameter space to a Pomeranchuk instability. Within the T broken region the predominant configuration is an anomalous Hall phase with non zero Hall conductivity, a realization of a topological Fermi liquid. A T broken phase with zero Hall conductivity is stable in a small region of the parameter space for lower values of V .
Comparison of MIN6 cell aggregate formation methods and shear resistance
Creators: name: Kocyigit, Muzaffer Cagri
Publisher: name: University of British Columbia
Year: 2018

description: Islet transplantation has the potential to cure type 1 diabetes, thereby avoiding the need for a lifetime of daily insulin injections. However, to protect the islet transplant from the recipients host immune system currently requires lifelong immunosuppression. Alginate gel microencapsulation is one of the biological envelopes being developed as a physical barrier to block rejection by the recipient immune system. When using emulsification for cell encapsulation, aggregates of cells are exposed to high shear stresses that can impact their recovery. This study has investigated the aggregation of MIN6 cells to develop a model system for insulin producing beta-cells. Two aggregation methods were investigated, either using a shaking agitation system or a static multi-well system without shaking. MIN6 cell aggregates generated by both methods were analyzed for their recovery after exposure to shear stresses. A disaggregation method was introduced to examine the cellular viability of the component cells in aggregates and the cells remained viable within aggregates. Finally, the aggregates were encapsulated using 1.5% (w/v) or 5% (w/v) alginate. The 5% alginate yielded higher encapsulation efficiencies and a more spherical structure with a narrower size distribution of capsule diameters, and so should be the more suitable choice for the further development of large-scale encapsulation production processing.
Pure Motor Upper Limb Weakness and Infarction in the Precentral Gyrus: Mechanisms of Stroke
Creators: name: Zeenat Qureshi Stroke Institutes
Publisher: name: Zenodo
Year: 2023

description: Background:
Pure arm monoparesis is an uncommon presentation of stroke. Localization of the lesions is variable, including cortical, subcortical or deep brain infarcts. No particular risk factors or unifying mechanisms have been clearly identified.
Methods:
Seven patients (5 women, 2 men) presented with isolated arm weakness and brain magnetic resonance imaging (MRI) documented an infarct in the precentral gyrus. All were evaluated for stroke risk factors, had telemetry monitoring, transthoracic echocardiogram (TTE) and magnetic resonance angiography (MRA) of the head and neck. Transesophageal echocardiogram (TEE) was performed in three cases. Hyper-coagulable work-up was performed in one case. Trans-cranial Doppler was performed in one case.
Results:
Mean age was 73 years (range 55–88 years). Arm weakness in all patients was ranging from mild (−5/5) to moderate (2/5) and was predominantly distal (without plegia). None of the patients complained of limb pain or sensory deficit. Infarcts affected one gyrus (5/7) or, less often, 2 adjacent gyri (2/7), along the most distal aspect of the middle cerebral artery (MCA) territory. Risk factors included hypertension (6/7), diabetes (2/7), hyper-lipidemia (7/7), smoking (1/7) and prior TIA/stroke (3/7). The mechanisms of ischemic stroke were determined to be large artery atherosclerosis (2/5), cardioembolic (2/5), other determined etiology [hypoperfusion (1/5)] and undetermined etiology (2/5).
Conclusions:
Our series of patients with small cortical infarcts and pure motor arm weakness show heterogeneous etiologies of stroke mechanisms and related long term outcomes. The risk factors appear to distribute as in most stroke populations, without a pattern specific to this unusual clinical presentation.
High-Contrast 3.8 Micron Imaging Of The Brown Dwarf/Planet-Mass Companion to GJ 758
Creators: name: Currie, Thayne
name: Bailey, Vanessa
name: Fabrycky, Daniel
name: Murray-Clay, Ruth
name: Rodigas, Timothy
name: Hinz, Phil
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present L' band (3.8 $μm$) MMT/Clio high-contrast imaging data for the nearby star GJ 758, which was recently reported by Thalmann et al. (2009) to have one -- possibly two-- faint comoving companions (GJ 758B and ``C", respectively). GJ 758B is detected in two distinct datasets. Additionally, we report a \textit{possible} detection of the object identified by Thalmann et al as ``GJ 758C" in our more sensitive dataset, though it is likely a residual speckle. However, if it is the same object as that reported by Thalmann et al. it cannot be a companion in a bound orbit. GJ 758B has a H-L' color redder than nearly all known L--T8 dwarfs. Based on comparisons with the COND evolutionary models, GJ 758B has T$_{e}$ $\sim$ 560 K$^{^{+150 K}_{-90K}}$ and a mass ranging from $\sim$ 10--20 M$_{J}$ if it is $\sim$ 1 Gyr old to $\sim$ 25--40 M$_{J}$ if it is 8.7 Gyr old. GJ 758B is likely in a highly eccentric orbit, e $\sim$ 0.73$^{^{+0.12}_{-0.21}}$, with a semimajor axis of $\sim$ 44 AU$^{^{+32 AU}_{-14 AU}}$. Though GJ 758B is sometimes discussed within the context of exoplanet direct imaging, its mass is likely greater than the deuterium-burning limit and its formation may resemble that of binary stars rather than that of jovian-mass planets.
description: 14 pages, 3 figures. Accepted for publication in The Astrophysical Journal Letters
Amplified steady state bifurcations in feedforward networks
Creators: name: von der Gracht, Sören
name: Nijholt, Eddie
name: Rink, Bob
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37G10, 34D06

description: We investigate bifurcations in feedforward coupled cell networks. Feedforward structure (the absence of feedback) can be defined by a partial order on the cells. We use this property to study generic one-parameter steady state bifurcations for such networks. Branching solutions and their asymptotics are described in terms of Taylor coefficients of the internal dynamics. They can be determined via an algorithm that only exploits the network structure. Similar to previous results on feedforward chains, we observe amplifications of the growth rates of steady state branches induced by the feedforward structure. However, contrary to these earlier results, as the interaction scenarios can be more complicated in general feedforward networks, different branching patterns and different amplifications can occur for different regions in the space of Taylor coefficients.
description: Revised version, published in Nonlinearity; 40 pages, 6 figures
Scalar field in nuclear matter: the roles of spontaneous chiral symmetry breaking and nucleon structure
Creators: name: Chanfray, G.
name: Ericson, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Chiral theories with spontaneous symmetry breaking such as the Nambu-Jona-Lasinio (NJL) model lead to the existence of a scalar mode. We present in a detailed manner how the corresponding low momentum effective lagrangian involving the scalar field can be constructed starting from the NJL model. We discuss the relevance of the scalar mode for the problem of the nuclear binding and saturation. We show that it depends on the nucleon mass origin with two extreme cases. If this origin is entirely due to confinement the coupling of this mode to the nucleons vanishes, making it irrelevant for the nuclear binding problem. If instead it is entirely due to spontaneous symmetry breaking it couples to the nucleons but nuclear matter collapses. It is only in the case of a mixed origin with spontaneous breaking that nuclear matter can be stable and reach saturation. We describe models of nucleon structure where this balance is achieved. We also show how chiral constraints and confinement modify the QCD sum rules for the mass evolution in nuclear matter.
description: 1 file, 3 figures, submitted to Physical Review C
Earlier Hypothermia Attainment is Associated with Improved Outcomes after Cardiac Arrest
Creators: name: Zeenat Qureshi Stroke Institutes
Publisher: name: Zenodo
Year: 2023

description: Introduction:
Therapeutic hypothermia (TH, 32–34ºC) reduces mortality and improves neurologic outcomes after ventricular fibrillation cardiac arrest (CA). The relationship between time to achieve TH and outcomes remains undefined. We hypothesized that a shorter interval from CA to achieve TH would be associated with improved neurologic outcome.
Methods:
We retrospectively reviewed subjects within or out-of-hospital CA treated with TH between November 2006 and April 2009 at our institution. The time to target temperature was defined as the interval between witnessed CA and first measurement of hypothermia (≤ 34 ºC) and further categorized as early (< 6 hours) or delayed (> 6 hours). Outcomes were assessed at the time of death or discharge using Cerebral Performance Category Score (CPC); good outcome was defined as CPC ≤ 2. Fisher's Exact test was used to assess the univariate relationship between time to TH and outcome.
Results:
26 patients achieved TH after in-hospital (39%) and out-of-hospital (61%) CA. Five patients (5/26) reached early target temperature; 80% (4/5) of those had a good neurological outcome. 24% (5/21) of subjects with delayed target temperature achieved a good neurological outcome. The univariate relationship between time to target temperature and neurological outcome was statistically significant (p=0.034).
Conclusion:
Attaining TH within 6 hours of in or out-of-hospital CA was associated with a greater likelihood of a good neurological outcome at discharge. Time from CA to achieved TH should be included as a clinically important covariate in future studies of predictors of outcome after CA.
Electric and magnetic dipole shielding constants for the ground state of the relativistic hydrogen-like atom: Application of the Sturmian expansion of the generalized Dirac-Coulomb Green function
Creators: name: Stefańska, Patrycja
name: Szmytkowski, Radoslaw
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: 81V45

description: The Sturmian expansion of the generalized Dirac-Coulomb Green function [R. Szmytkowski, J. Phys. B 30 (1997) 825; erratum 30 (1997) 2747] is exploited to derive closed-form expressions for electric ($σ_{\mathrm{E}}$) and magnetic ($σ_{\mathrm{M}}$) dipole shielding constants for the ground state of the relativistic hydrogen-like atom with a point-like and spinless nucleus of charge $Ze$. It is found that $σ_{\mathrm{E}}=Z^{-1}$ (as it should be) and $$σ_{\mathrm{M}}=-(2Zα^{2}/27)(4γ_{1}^{3}+6γ_{1}^{2}-7γ_{1}-12) /[γ_{1}(γ_{1}+1)(2γ_{1}-1)],$$ where $γ_{1}=\sqrt{1-(Zα)^{2}}$ ($α$ is the fine-structure constant). This expression for $σ_{\mathrm{M}}$ agrees with earlier findings of several other authors, obtained with the use of other analytical techniques, and is elementary compared to an alternative one presented recently by Cheng \emph{et al.} [J. Chem. Phys. 130 (2009) 144102], which involves an infinite series of ratios of the Euler's gamma functions.
description: LaTeX, 12 pages
ОСНОВНЫЕ ПРОБЛЕМЫ СЕЛЕКЦИИ И СЕМЕНОВОДСТВА СЕЛЬСКОХОЗЯЙСТВЕННЫХ КУЛЬТУР И ПУТИ ИХ РЕШЕНИЯ
Creators: name: ПАНАРИНА В.И.
name: ПОЛУХИН А.А.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: СЕЛЕКЦИЯ
СЕМЕНОВОДСТВО
СОРТ
СЕЛЬСКОЕ ХОЗЯЙСТВО
ГОСПОДДЕРЖКА
BREEDING
SEED GROWING
VARIETY
AGRICULTURE
GOVERNMENT SUPPORT

description: Раскрыты основные проблемы в системе селекции и семеноводства сельскохозяйственных культур, начавшиеся еще в кризисных 90-х гг. К ним относятся: высокая степень изношенности материально-технической базы; кадровый дефицит; отсутствие взаимосвязи между селекционерами и производителями сельскохозяйственной продукции; недостаточное государственное финансирование научных разработок в сфере генетики и селекции. Результатом таких негативных тенденций стал успешный приход на российский рынок иностранных компаний с более конкурентоспособным посадочным и посевным материалом, а также грамотно выстроенной маркетинговой политикой. Представлены результаты анализа Государственного реестра селекционных достижений, допущенных к использованию по таким показателям как: доля сортов зарубежной селекции, процент отечественных и иностранных оригинаторов/патентообладателей. В результате чего показано, что за последние восемь лет выявлен рост зарубежных оригинаторов сортов. По-прежнему высока доля западно-европейских сортов, особенно по отдельным сельскохозяйственным культурам - сахарной свёкле, рапсу, кукурузе, подсолнечнику, картофелю и сои. Показано, что из десятки сортов-лидеров по объёмам высева производители отдают предпочтение российским сортам в основном по таким культурам как озимая пшеница, рожь, овёс, гречиха и рис. Определены основные направления совершенствования отрасли.
ОТЕЧЕСТВЕННАЯ СЕЛЕКЦИЯ ЗЕРНОБОБОВЫХ И КРУПЯНЫХ КУЛЬТУР
Creators: name: ЗОТИКОВ В.И.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: ЗЕРНОБОБОВЫЕ КУЛЬТУРЫ
КРУПЯНЫЕ КУЛЬТУРЫ
СЕЛЕКЦИЯ
ГОРОХ
СОЯ
ГРЕЧИХА
ПРОСО ПОСЕВНОЕ
ПАЙЗА
СОРТ
СЕМЕНОВОДСТВО
СЕМЕНА
ЗЕРНО
LEGUMINOUS CROPS
CEREAL CROPS
SELECTION
PEAS
SOYBEANS
BUCKWHEAT
MILLET
PAIZA
VARIETY
SEED PRODUCTION
SEEDS
GRAIN

description: Необходимость внедрения проекта селекционной программы ФНЦ ЗБК по улучшению качества семян и использования сортов отечественной селекции сельскохозяйственных культур определяют особую роль зернобобовых и крупяных в решении глобальных вопросов продовольственной программы и промышленной экономике РФ. Представлены результаты работы по селекции зернобобовых и крупяных культур, количественные результаты новых сортов отечественной селекции гороха, сои, гречихи, проса. Важнейшей задачей первичного семеноводства является ускоренное производство семян элиты за счёт упрощения схем первичного семеноводства в сочетании с приёмами быстрого размножения семян и современными способами сохранения типа сорта. В настоящее время предлагается при производстве оригинальных семян параллельно с системой Государственного испытания целесообразно вести семеноводство перспективного сорта, что позволит сразу после его внесения в Госреестр селекционных достижений, допущенных к использованию, иметь такое количество семян, которое обеспечило бы под этим сортом 10-20% структуры посевных площадей в конкретном регионе. Определены основные проблемы и направления совершенствования селекционной работы по развитию и внедрению новых интенсивных сортов (сортосмене и сортообновлении), в недостатке специализированной техники для своевременного выполнения агротехнических приёмов по посеву, уходу и качественному проведению уборочных работ.
The Discriminant of an Algebraic Torus
Creators: name: Bitan, R. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14-00

description: For a torus T defined over a global field K, we revisit an analytic class number formula obtained by Shyr in the 1970's as a generalization of Dirichlet's class number formula. We prove a local-global presentation of the quasi-discriminant of T, which enters into this formula, in terms of cocharacters of T. This presentation can serve as a more natural definition of this invariant.
description: 17 pages
ОЦЕНКА ПЕРСПЕКТИВНЫХ СОРТООБРАЗЦОВ ГОРОХА ПО КАЧЕСТВУ И ВЗАИМОСВЯЗЬ БИОХИМИЧЕСКИХ ПОКАЗАТЕЛЕЙ С УРОЖАЙНОСТЬЮ И МАССОЙ 1000 ЗЕРЕН
Creators: name: БЕЛОУСОВА Ю.В.
name: ЮРЬЕВА Н.И.
name: ФИЛАТОВА И.А.
name: БРАИЛОВА И.С.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: ГОРОХ
СОРТООБРАЗЦЫ
БЕЛОК
КРАХМАЛ
МАССА 1000 ЗЕРЕН
УРОЖАЙНОСТЬ
КОРРЕЛЯЦИЯ
PEAS
VARIETIES
PROTEIN
STARCH
MASS OF 1000 GRAINS
PRODUCTIVITY
CORRELATIO

description: Селекция на качество продукции является одной из важнейших задач создания новых более ценных не только по количеству, но и по качеству получаемой продукции сортов. В статье приведены трехлетние данные по результатам изучения биохимических показателей (белок, сахар, крахмал) и урожайности 57 образцов гороха, взятых из питомника конкурсного сортоиспытания. Исследования проводили в отделах генетики и иммунитета и селекции зернобобовых культур НИИСХ ЦЧП им В.В. Докучаева. Основной целью нашей работы было проанализировать, оценить и выбрать лучшие по изучаемым признакам образцы, выделившиеся в период 2017-2019 гг. У всех испытуемых образцов содержание белка в зерне было не ниже 20%. Выявлены образцы с высокими показателями по содержанию белка в зерне: 61/18 - 25,5%, 67/18 и 27/19 по 24,9%. Максимальный сбор протеина с единицы площади составил 6,5 ц/га у линии 67/18 и 6,7 ц/га - 58/18. Высокими показателями по количеству сахара характеризовались образцы: 92/13 - 5,1 % и 109/13 - 5,2%, это на 44% больше средних значений по всем изучаемым образцам и на 37% выше, чем у лучшего по содержанию сахара местного сорта-стандарта Дударь. Обнаружены высоко крахмальные образцы: 71/17 - 54,0%, 70/17 - 54,3%. Данные образцы представляют особый интерес и будут использоваться в дальнейшей селекционной работе по повышению качественных показателей при создании новых сортов гороха. Установлена высокая степень взаимозависимости между показателями «урожайность» и «сбор белка» r = 0,944 ± 0,077 и низкая степень влияния у показателей «масса 1000 зерен» и «количество белка в зерне» r = -0,432 ± 0,212.
Perfect transmission scattering as a PT-symmetric spectral problem
Creators: name: Hernandez-Coronado, H.
name: Krejcirik, D.
name: Siegl, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish that a perfect-transmission scattering problem can be described by a class of parity and time reversal symmetric operators and hereby we provide a scenario for understanding and implementing the corresponding quasi-Hermitian quantum mechanical framework from the physical viewpoint. One of the most interesting features of the analysis is that the complex eigenvalues of the underlying non-Hermitian problem, associated with a reflectionless scattering system, lead to the loss of perfect-transmission energies as the parameters characterizing the scattering potential are varied. On the other hand, the scattering data can serve to describe the spectrum of a large class of Schroedinger operators with complex Robin boundary conditions.
description: 7 pages, 5 figures
ОЦЕНКА ОБРАЗЦОВ ГОРОХА ИЗ КОЛЛЕКЦИИ ВИР ИМЕНИ Н.И. ВАВИЛОВА НА ОТНОСИТЕЛЬНУЮ ЗАСУХОУСТОЙЧИВОСТЬ
Creators: name: БЕЛЯЕВА Р.В.
name: СОБОЛЕВА Г.В.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: ГОРОХ
КОЛЛЕКЦИОННЫЙ ОБРАЗЕЦ
РАСТВОР САХАРОЗЫ
ОСМОУСТОЙЧИВОСТЬ
ПРОДУКТИВНОСТЬ
PEAS
COLLECTION SAMPLE
SUCROSE SOLUTION
OSMOTOLERANCE
PRODUCTIVITY

description: В статье представлены результаты изучения 30 образцов гороха из коллекции ВИР им. Н.И. Вавилова различного эколого-географического происхождения по устойчивости к осмотическому стрессу и ряду хозяйственно-значимых признаков. Оценку коллекции на осмоустойчивость осуществляли на растворах сахарозы с осмотическим давлением 16 атм. Показателями, отражающими реакцию растений на устойчивость к водному дефициту, являлись: относительный уровень устойчивости (всхожесть семян в растворе сахарозы в % к контролю), индекс роста корня (длина зародышевого корешка на сахарозе в % к контролю), индекс роста побега (длина побега на сахарозе в % к контролю). Различия изученных образцов по реакции на осмотический стресс наиболее четко проявились по показателю - индекс роста корня. Согласно проведенному ранжированию из 30 коллекционных номеров было выделено всего 4 среднеустойчивых и 1 высокоустойчивый образец. Группу среднеустойчивых образцов гороха составили как красноцветковые листочковые морфотипы к-3315 (Местный, Кировская обл.), к-3611 (Памир), так и белоцветковые листочковые морфотипы к-8237 (Атлант, Краснодарский край), к-8520 (Рамонский 90, Воронежская обл.). У высокоустойчивого образца к-7759 (162/76, Украина) цветки белые, лист обычный.
Criss-cross mapping BD+30 3639: a new kinematic analysis technique
Creators: name: Steffen, Wolfgang
name: Tamayo, Francisco
name: Koning, Nico
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a new analysis of kinematic data of the young planetary nebula BD+30 3639. The data include spectroscopic long-slit and internal proper motion measurements. In this paper we also introduce a new type of mapping of kinematic proper motion data that we name "criss-cross" mapping. It basically consists of finding all points where extended proper motion vectors cross converge. From the crossing points a map is generated which helps to interpret the kinematic data. From the criss-cross mapping of BD+30 3639, we conclude that the kinematic center is approximately 0.5 arcsec offset to the South-East from the central star. The mapping does also show evidence for a non-homologous expansion of the nebula that is consistent with a disturbance aligned with the bipolar molecular bullets.
description: 4 pages, to appear in the proceedings of the conference "Asymmetrical Planetary Nebulae V", eds. Zijlstra, et al., editorial: Ebrary
ПЕРСПЕКТИВЫ ИСПОЛЬЗОВАНИЯ ГУМАТА КАЛИЯ ЖИДКОГО ТОРФЯНОГО И ФУНГИЦИДА ТИТУЛ ДУО, ККР ДЛЯ ВНЕКОРНЕВОЙ ОБРАБОТКИ РАСТЕНИЙ ГОРОХА
Creators: name: ЛАТЫНЦЕВА Е.В.
name: ЦУКАНОВА З.Р.
name: ЕРОХИН А.И.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: ГУМАТ КАЛИЯ ЖИДКИЙ (ТОРФЯНОЙ)
ТИТУЛ ДУО
ККР
РАСТЕНИЯ
ОБРАБОТКА
УРОЖАЙНОСТЬ
LIQUID POTASSIUM HUMATE (PEAT)
TITUL DUO
KKR
PLANTS
TREATMENT
YIELD

description: Применение препаратов отдельно и совместно с фунгицидами для внекорневых (листовых) подкормок позволяет улучшить количественные и качественные показатели урожайности культуры. В лабораторно-полевом опыте обработка вегетирующих растений гороха Фараон проведена Гуматом Калия жидким (торфяным) в дозе - 600 мл/га (одним препаратом), а также с добавлением фунгицида Титул Дуо, ККР - 0,35 л/га. Растения гороха обрабатывали в фазе бутонизации - начало цветения. Объём воды для приготовления рабочих растворов препаратов составлял - 250-300 л/га. В исследованиях установлено, что обработка вегетирующих растений гороха Фараон препаратом Гуматом Калия жидким (торфяным) (одним) и совместно с фунгицидом Титул Дуо, ККР увеличивает зелёную массу растений на 23-39 г, (8,2-13,9%), сухую массу растений - на 6,8-9,5 г, (11,1-15,4%) по сравнению с контрольным вариантом. Лучшие результаты получены от совместного применения препаратов. Применение препарата Гумата Калия жидкого (торфяного) -600 мл/га на растениях увеличивает урожайность гороха к контролю на 0,17 т/га (6,9%). Прибавка урожайности гороха от совместного применения препаратов (Гумата Калия жидкого (торфяного) и фунгицида Титул Дуо, ККР) превышала контрольный вариант, в среднем за 2017-2019 гг. на 0,25 т/га или 10,2%, а элементы продуктивности растений - от 5,4 до 20,0% и массу 1000 семян на 1,0-1,2%.
Application of Confocal Microscopy for 3D Assessment of Carotid Plaque Structure: Implications for Carotid Blood Flow and Stroke Research
Creators: name: Zeenat Qureshi Stroke Institutes
Publisher: name: Zenodo
Year: 2023

description: Little information is available on how forces resulting from fluid flow interact with structural stability of carotid atherosclerotic plaque and how such interactions may impact on stroke prevention; investigation of the 3D structure of plaque could help in such studies. The aim of this study was to investigate whether confocal microscopy can be used to obtain 3D visualization of the structure of atherosclerotic carotid plaques.
Methods:
Carotid plaque specimens were collected from routine end-arterectomy surgical operations. Both bright-field microscopy and Laser Scanning Confocal Microscopy (LSCM) were used to generate 3D image data-sets and visualizations of surgically removed carotid plaques.
Results:
Evidence of carotid plaque vulnerability was demonstrated by reduced fibrous cap thickness and large lipid-necrotic core with evidence of cracking.
Conclusion:
The generation of 3D images of carotid plaques could help in: (i) investigating key features that affect plaque structural stability; (ii) comparing 3D microstructure of the plaque with clinical imaging assessment and blood flow investigations; and (iii) developing markers to identify patients requiring clinical intervention
Chrysops dispar
Creators: name: Maity, Aniruddha
name: Naskar, Atanu
name: Homechaudhuri, Sumit
name: Banerjee, Dhriti
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tabanidae
Chrysops
Chrysops dispar

description: 1. Chrysops dispar (Fabricius, 1798) 1798, Chrysops dispar Fabricius, Ent. Syst. Suppl., 567 (♂, ♀; Tabanus). Type-locality: India Distribution: India, Elsewhere: Borneo, Burma, Ceylon, China, Formosa, Hainan, Laos, Malaya, Nepal, Philippines, [Luzon] Sumatra, Thailand, Viet Nam.
description: Published as part of Maity, Aniruddha, Naskar, Atanu, Homechaudhuri, Sumit & Banerjee, Dhriti, 2020, Taxonomic Accounts With Notes On Spatial Diversity And Relative Abundance Pattern Of Horseflies (Diptera: Tabanidae) From Sonamukhi Protected Forest Area Of West Bengal, India, pp. 200-225 in Munis Entomology & Zoology 15 (1) on page 207, DOI: 10.5281/zenodo.3761958
description: {"references": ["Fabricius, J. C. 1798. Supplementum Entomologiae Systematicae, Hafniae (= Copenhagen), 572 pp."]}