cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The study of N-heterocyclic carbenes (NHCs) in ionic liquids
Creators: name: Bin Nik Daud, Nik Muhammad Azhar
Publisher: name: Imperial College London
Year: 2019

description: The formation of N-heterocyclic carbenes (NHCs) from imidazolium based ionic liquids (ILs) has attracted great interest, especially for synthetic chemistry. Carbenes can be used as catalysts for C-C bond formation reactions, such as the benzoin condensation or Stetter reaction. In this project, ILs were used as the source of carbene in the benzoin condensation in neat conditions, which was successfully performed. The imidazolium acetate ILs proved to be useful catalysts as well as solvents for the benzoin condensation, with their activity likely arising from the in-situ formation of NHCs. For example, it was found that the reaction of benzaldehyde with 1-butyl-3-methylimidazolium acetate, [C4C1im][OAc] and 1-ethyl-3-methylimidazolium acetate [C2C1im][OAc] as catalysts produced benzoin with good to excellent yield. These results show that the acetate anion in the [C2C1im][OAc] can act as base in the reaction. This result triggered us to investigate the reaction kinetics for the benzoin reaction using ILs. The results show that the reaction is a complex reaction which depends on a lot of parameters. The results also showed that the rate determining step is the second step, where the Breslow intermediate reacts with a second aldehyde. The first step is very fast. This result also brings another interesting question on the existence of NHCs in the reaction; did the NHC form during the reaction or did NHC is already exist in the ionic liquid. To investigate this, we have performed the kinetics of Breslow intermediate formation and isotope effect experiments were performed using deuterated C2 position of [C2C1im][OAc] with anisaldehyde and compared the rate of the reaction with normal [C2C1im][OAc]. The result showed no significant difference in the reaction rate. This suggests that the carbene already existed in ionic liquid rather than being form during the reaction. The ability of ILs to react with the carbonyl group in cellulose is well established. A proposed method was performed to protect the aldehyde group from reacting with the ILs by using the diol compound as the protecting group. Two different methods were employed and the result showed that the protection group can prevent the ILs from reacting with the carbonyl group. As this result only used benzaldehyde as model compound, the applicability of the method in the actual cellulose compound remain question and further study is needed.
On Construction of Recursion Operator and Algebra of Symmetries for Field and Lattice Systems
Creators: name: Blaszak, Maciej
Publisher: name: arXiv
Year: 2000
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In the paper, developing the idea of V. Sokolov et all. (J.Math.Phys. 40 (1999)6473 we construct recursion operators and hereditary algebra of symmetries for many field and lattice systems.
description: 10 pages, to appear in Rep. Math. Phys
Probing one-dimensional topological phases in waveguide lattices with broken chiral symmetry
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One-dimensional lattices with chiral symmetry are known to possess quantized Zak phase and nontrivial topological phases. Here it is shown that quantized Zak phase and nontrivial edge states, partially protected by inversion symmetry rather than chiral symmetry, can be observed and probed in the bulk exploiting continuous-time photonic quantum walk in zig-zag waveguide arrays. Averaged beam displacement measurements can detect quantized Zak phase and non-trivial topological phases in the extended Su-Schrieffer-Heeger model with broken chiral symmetry.
description: 3 figures
Cosmic Crystallography with a Pullback
Creators: name: Fagundes, Helio V.
name: Gausmann, Evelise
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a modified version of the cosmic crystallography method, especially useful for testing closed models of negative spatial curvature. The images of clusters of galaxies in simulated catalogs are ``pulled back'' to the fundamental domain before the set of distances is calculated.
description: 9 pages, 2 figures
Luminescent compounds for targeting formyl peptide receptors
Creators: name: Boltersdorf, Tamara
Publisher: name: Imperial College London
Year: 2019

description: Unregulated inflammation is implicated in a variety of disease states such as stroke, cancer and neurodegenerative conditions and often the extent of inflammatory response can determine the prognosis for a particular disease state. Human neutrophils express formyl peptide receptors one (FPR1) and two (FPR2/ALX, also known as the lipoxin A4 receptor) and are known to both drive vascular inflammation and at the same time be involved in its resolution. Therefore, these receptors represent an attractive target for non-invasive visualisation of inflammation in disease states. The work within this thesis focusses on designing luminescent imaging probes that selectively tag neutrophils in an inflammatory context. To achieve this, a small-molecule FPR2/ALX ligand was chosen based on ease of synthesis, ability for further functionalisation and a dose-dependent neutrophil response observed in vitro. The targeting system was initially combined with a rhodamine-based dye and binding via the neutrophil FPR family was confirmed via pharmacological blocking. In vitro, the probe did not affect neutrophil responses and in vivo preferential uptake by neutrophils in a model of acute inflammation compared to control groups was demonstrated. Via minor synthetic alterations, a pH-responsive version based on the rhodamine spirocyclisation equilibrium was prepared (pKcycl = 3.97) and the compound was shown to be fluorescent in stimulated neutrophils in vitro but remained non-fluorescent under normal physiological conditions. By appending the same targeting group to metal chelates, compounds with long-lived luminescence signals that can be separated from cellular autofluorescence via lifetimes, were prepared. Time-resolved microscopy on activated and unactivated human neutrophils incubated with FPR2/ALX-targeted lanthanide-based compounds was performed, but high concentrations were required. A second iteration of probe design, using a Re(I) tricarbonyl motif, resulted in time-resolved images of neutrophils at lower probe concentration. Finally, a construct containing a lanthanide unit, a pH-responsive fluorophore and the targeting group was formed and the energy transfer processes in the Tb(III) analogue were investigated. The observed energy transfer provides a unique opportunity to enhance emission properties of the compound for time-resolved imaging via donor-sensitised, long-lived emission, providing an alternative radiative pathway that circumvents the formally forbidden, characteristically weak lanthanide emission.
Additional file 3 of Analysis of EpCAM positive cells isolated from sentinel lymph nodes of breast cancer patients identifies subpopulations of cells with distinct transcription profiles
Creators: name: Tveito, Siri
name: Andersen, Kristin
name: Kåresen, Rolf
name: Fodstad, Øystein
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 1
Dimer Decimation and Intricately Nested Localized-Ballistic Phases of Kicked Harper
Creators: name: Prosen, Tomaž
name: Satija, Indubala I
name: Shah, Nausheen R.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Dimer decimation scheme is introduced in order to study the kicked quantum systems exhibiting localization transition. The tight-binding representation of the model is mapped to a vectorized dimer where an asymptotic dissociation of the dimer is shown to correspond to the vanishing of the transmission coefficient thru the system. The method unveils an intricate nesting of extended and localized phases in two-dimensional parameter space. In addition to computing transport characteristics with extremely high precision, the renormalization tools also provide a new method to compute quasienergy spectrum.
description: There are five postscript figures. Only half of the figure (3) is shown to reduce file size. However, missing part is the mirror image of the part shown
Method development for the in situ screening of uncultivable bacteria for antibiotic production
Creators: name: Hansen, Daniel Bilcher Holst
Publisher: name: Imperial College London
Year: 2018

description: Multidrug-resistant bacteria are one of the most critical threats facing human health. Despite an urgent need for novel treatments, antibiotic discovery has stalled. Consequently, no novel antibiotic class has been discovered in the last 40 years. Most existing antibiotics were discovered by screening the 1 % of bacteria that can be cultivated in standard laboratory conditions. The 99 % residual bacteria represent a bioresource that could yield novel antibiotics; but at present this bioresource remains largely unscreened. Here I present the development of a novel high throughput in situ screening array (“ISSA” platform), which screens soil bacteria for antibiotic production in their native environment. The developed platform can isolate a known number of soil strains and screen them against specific clinically relevant pathogens. The platform consists of 4080 discrete compartments, with each compartment containing an average of one soil bacterium and an adjacent luxCDABE bioreporter strain that turns off when antibacterial compounds are secreted. The in situ incubation in the ISSA platform significantly boosts cultivation rates of previously uncultivable bacteria, resulting in the isolation and cultivation of novel bacterial strains. The ISSA platform overall leads to an efficient identification process of soil bacteria that secrete antibacterial compounds. So far, the platform has identified seven antibacterial compound producing strains. Three of these strains are novel antibacterial compound producers, which demonstrates that the developed ISSA platform can be a valuable tool in the race to discover novel antibiotics.
Additional file 4 of Analysis of EpCAM positive cells isolated from sentinel lymph nodes of breast cancer patients identifies subpopulations of cells with distinct transcription profiles
Creators: name: Tveito, Siri
name: Andersen, Kristin
name: Kåresen, Rolf
name: Fodstad, Øystein
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 2
The role of media in conflict management in Somalia
Creators: name: Yusuf, Mohamud Mohamed
Publisher: name: Zenodo
Year: 2025
Subjects: media
conflict
management in Somalia

description: Abstract

The media plays a crucial role in conflict management, influencing public perception, shaping narratives, and either escalating or de-escalating conflicts. This study examines the role of media in conflict management in Somalia, focusing on how local and international media impact conflict resolution efforts. The research assesses the media's role in de-escalating violence, its positive and negative influences, and the challenges faced by journalists in conflict reporting.

Using a mixed-methods approach, data was collected through surveys and interviews with media professionals, policymakers, and community leaders. The findings indicate that while the media can promote peacebuilding by fostering dialogue and countering misinformation, it can also exacerbate tensions through biased reporting and propaganda. Additionally, journalists in Somalia face threats from armed groups, government censorship, and lack of professional training, which limits their ability to contribute effectively to conflict resolution.

The study highlights the need for ethical journalism, media literacy programs, and stronger legal protections for journalists to enhance the role of media in peacebuilding. Recommendations include increasing investment in conflict-sensitive reporting, strengthening regulatory frameworks, and promoting media independence to ensure balanced and objective reporting. These insights provide valuable guidance for policymakers, media organizations, and peacebuilding practitioners seeking to harness the media’s potential in conflict management in Somalia.
Additional file 7 of Analysis of EpCAM positive cells isolated from sentinel lymph nodes of breast cancer patients identifies subpopulations of cells with distinct transcription profiles
Creators: name: Tveito, Siri
name: Andersen, Kristin
name: Kåresen, Rolf
name: Fodstad, Øystein
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 5
One Loop Back Reaction On Chaotic Inflation
Creators: name: Abramo, L. R.
name: Woodard, R. P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend, for the case of a general scalar potential, the inflaton-graviton Feynman rules recently developed by Iliopoulos {\it et al.} As an application we compute the leading term, for late co-moving times, of the one loop back reaction on the expansion rate for $V(ϕ) = \frac12 m^2 ϕ^2$. This is expressed as the logarithmic time derivative of the scale factor in the coordinate system for which the expectation value of the metric has the form: $<0 | g_{μν}({\bar t},{\vec x}) | 0 > dx^μ dx^ν = - d{\bar t}^2 + a^2({\bar t}) d{\vec x} \cdot d{\vec x}$. This quantity should be a gauge independent observable. Our result for it agrees exactly with that inferred from the effect previously computed by Mukhanov {\it et al.} using canonical quantization. It is significant that the two calculations were made with completely different schemes for fixing the gauge, and that our computation was done using the standard formalism of covariant quantization. This should settle some of the issues recently raised by Unruh.
description: 41 pages, LaTeX 2 epsilon
ARM MUSCLE STRENGTH AND LEG MUSCLE CONTRIBUTE TO FREESTYLE SWIMMING SPEED
Creators: name: Aulia Rahmad
name: Syahrastani
name: Andri Gemaini
name: Usama Ashmawi
name: Özgür EKEN
name: Ratko Pavlovic
name: Novadri Ayubi
Publisher: name: Zenodo
Year: 2024
Subjects: Physical Condition, Muscle Strength, Freestyle Swimming.

description: Abstract

This study set out to investigate the relationship between arm and leg muscular strength and freestyle swimming speed. A total of 30 male swimmers participated in this research and the subjects were selected using the purposive sampling method. Before the research begins, research subjects received instructions on research procedures and signed an informed consent form. Tests of arm and leg muscle strength (the Push Up and Standing Broad Jump tests), as well as 50-meter freestyle swimming speed, are used to gather research data. Contribution tests and multiple correlation tests were employed in the data analysis. The results of this study report that arm muscle strength and 50-meter freestyle swimming speed are significantly correlated, leg muscle strength and 50-meter freestyle swimming speed have a large relationship, 50-meter freestyle swimming speed is significantly influenced by arm and leg muscle strength. It has been proven that strengthening the muscles in the arms and legs helps swimmers perform better.
Additional file 8 of Analysis of EpCAM positive cells isolated from sentinel lymph nodes of breast cancer patients identifies subpopulations of cells with distinct transcription profiles
Creators: name: Tveito, Siri
name: Andersen, Kristin
name: Kåresen, Rolf
name: Fodstad, Øystein
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 6
Front propagation in laminar flows
Creators: name: Abel, M.
name: Celani, A.
name: Vergni, D.
name: Vulpiani, A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The problem of front propagation in flowing media is addressed for laminar velocity fields in two dimensions. Three representative cases are discussed: stationary cellular flow, stationary shear flow, and percolating flow. Production terms of Fisher-Kolmogorov-Petrovskii-Piskunov type and of Arrhenius type are considered under the assumption of no feedback of the concentration on the velocity. Numerical simulations of advection-reaction-diffusion equations have been performed by an algorithm based on discrete-time maps. The results show a generic enhancement of the speed of front propagation by the underlying flow. For small molecular diffusivity, the front speed $V_f$ depends on the typical flow velocity $U$ as a power law with an exponent depending on the topological properties of the flow, and on the ratio of reactive and advective time-scales. For open-streamline flows we find always $V_f \sim U$, whereas for cellular flows we observe $V_f \sim U^{1/4}$ for fast advection, and $V_f \sim U^{3/4}$ for slow advection.
description: Enlarged, revised version, 37 pages, 14 figures
A proposal for an updated staging system for LCHADD retinopathy
Creators: name: Wongchaisuwat, Nida
name: Gillingham, Melanie B.
name: Yang, Paul
name: Everett, Lesley
name: Gregor, Ashley
name: Harding, Cary O.
name: Sahel, Jose Alain
name: Nischal, Ken K.
name: Scanga, Hannah L.
name: Black, Danielle
name: Vockley, Jerry
name: Arnold, Georgianne
name: Pennesi, Mark E.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Space Science
Medicine
Biotechnology
Biological Sciences not elsewhere classified
Developmental Biology
Science Policy

description: To develop an updated staging system for long-chain 3-hydroxyacyl coenzyme A dehydrogenase deficiency (LCHADD) chorioretinopathy based on contemporary multimodal imaging and electrophysiology. We evaluated forty cases of patients with genetically confirmed LCHADD or trifunctional protein deficiency (TFPD) enrolled in a prospective natural history study. Wide-field fundus photographs, fundus autofluorescence (FAF), optical coherence tomography (OCT), and full-field electroretinogram (ffERG) were reviewed and graded for severity. Two independent experts first graded fundus photos and electrophysiology to classify the stage of chorioretinopathy based upon an existing published system. With newer imaging modalities and improved electrophysiology, many patients did not fit cleanly into a single traditional staging group. Therefore, we developed a novel staging system that better delineated the progression of LCHADD retinopathy. We maintained the four previous delineated stages but created substages A and B in stages 2 to 3 to achieve better differentiation. Previous staging systems of LCHADD chorioretinopathy relied on only on the assessment of standard 30 to 45-degree fundus photographs, visual acuity, fluorescein angiography (FA), and ffERG. Advances in recordings of ffERG and multimodal imaging with wider fields of view, allow better assessment of retinal changes. Following these advanced assessments, seven patients did not fit neatly into the original classification system and were therefore recategorized under the new proposed system. The new proposed staging system improves the classification of LCHADD chorioretinopathy, with the potential to lead to a deeper understanding of the disease’s progression and serve as a more reliable reference point for future therapeutic research.
Voronoi-Cell Lattice Models of Plastic Settlement of Fiber-Reinforced Concrete
Creators: name: biot-bazant, figshare admin
name: Pan, Yaming
name: Kang, Jingu
name: Bolander, John E.
Publisher: name: The Biot-Bazant Conference
Year: 2021
Subjects: subject: 80205 Numerical Computation
subject: FOS: Computer and information sciences
subject: 90503 Construction Materials
subject: FOS: Civil engineering
subject: 90506 Structural Engineering

description: This publication is part of the proceedings of the Biot-Bažant Conference on Engineering Mechanics and Physics of Porous Materials, which took place virtually on June 1-3, 2021. It contains a one-page abstract and the video of the talk that was given at the conference.
The Effect of Hypoxia on the Respiratory Compensation Point and Critical Power
Creators: name: Aboghaba, Bahaa
Publisher: name: Manara - Qatar Research Repository
Year: 2025
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Many studies were done investigating the effects of hypoxia on Respiratory Compensation Point (RCP) and Critical Power (CP). However, no studies were done to investigate the relationship between RCP and CP in hypoxic condition, which are thought to have a common underlying mechanism. The aim of this study is to examine the effects of hypoxia on the relationship between CP and RCP. Eleven well-trained male cyclists volunteered in this study (mean ± SD; age 27 ± 6.6 years, height 179 ± 7.5 cm, body mass 78.5 ± 7.9 kg). Participant age was (18-35 years), training history was a minimum of 2 years of cycling training history, with 7 hours per week average training volume, free from injury or illness. Participants attended three times to perform incremental exercise tests on an electronically braked cycle ergometer. Experimental protocol was done once in normoxia (NORM: FiO2 of ≈0.155), and once in normobaric hypoxia (HYPO: FiO2 ≈0.155). Testing order of conditions was single-blinded, randomized and counterbalanced. Results showed that at GET and RCP, there was a significant main effect of HYPO on power, VO2, VCO2, RER, %SpO2, and VO2peak (P< 0.05). Furthermore, CP was significantly correlated to RCP, and revealed a strong effect size (r2 = 0.93, P <0.001). In HYPO, CP was also not significantly different to RCP (P =0.12), whereas the correlation between CP and RCP remained significant yet there was only a small effect size (r2 = 0.32, P =0.07). We concluded that the relationship between CP and RCP in HYPO was mildly disassociated, which indicates that despite the likelihood that a common underlying mechanism exists, there are also differences in these mechanisms, and therefore caution should be used when using RCP as a proxy for CP, especially in hypoxia.
Multimodal and longitudinal evaluation of novel phenotype-genotype correlation of CLN3 isolated retinal degeneration in an hispanic female with heterozygous mutations c.944dup and c.1305C>G
Creators: name: Garza-Garza, Lucas A.
name: Villarreal-Martinez, Priscila
name: la Cruz, Rocio Villafuerte-de
name: Garza-Leon, Manuel
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Science Policy

description: Inherited retinal disorders (IRDs) are a complex group of heritable diseases which are characterized by rod, cone, retinal pigment epithelium, or optic nerve dysfunction. Recently, mutations in CLN3 have also been associated with isolated IRDs. Herein, a case with heterozygous CLN3 variations that had not been previously linked to a CLN3-isolated retinal degeneration (CLN3IRD) phenotype in a Hispanic female and its multimodal imaging findings across a 10-year follow-up are presented. An observational, prospective, case report on a hispanic female with CLN3IRD is presented. Patients underwent genetic testing and color fundus photography (CFC) and autofluorescence (FAF), fluorescein angiography (FA), Spectral domain optical coherence tomography (OCT) of the macular area, electroretinogram (ERG) and 30–2 visual field examination through automated perimetry. A female, aged 24, affected by CLN3IRD phenotype from c.944dup and c.1305C>G compound heterozygous variants, presented with bilateral hypopigmentary changes in the macular area of OU with that corresponded to hyporautofluorescent deposits in the macular area on FAF. An atrophic maculopathy was evident on structural OCT, and FA disclosed a symmetrical macular hyperflourescence with staining in the early and late stages in OU. Humphrey visual field testing showed a marked reduction of the central visual field in OU. Electrophysiological testing revealed an ERG with markedly decreased a and b waves in OU. In ten years follow up developed of bone spiculae in the midperipheral retina. We reported a patient with a novel CLN3IRD severe phenotype associated with the variants c.944dup and c.1305C>G, which had previously only been associated with JCNL.
Energy Partition between Ion and Electron of Collisionless Magnetic Reconnection
Creators: name: Hoshino, Masahiro
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The plasma heating during collisionless magnetic reconnection is investigated using particle-in-cell simulations. We analyze the time evolution of the plasma temperature associated with the motion of the reconnecting flux tube, where the plasma temperature is defined as second-order moment of velocity distribution function in the simulation frame/in the center of the flux tube frame, and we show that the plasma heating during magnetic reconnection can be separated into two distinct stages: the nonadiabatic heating stage, in which the magnetic field lines are just reconnecting in the X-type diffusion region, and the adiabatic heating stage, in which the flux tube is shrinking after two flux tubes merge. During the adiabatic heating stage, the plasma temperature $T$ can be approximated by $TV^{γ-1}=const.$, where $γ=5/3$ is the specific heat, and $V$ is the volume of the flux tube. In the nonadiabatic heating stage, we found numerically that the ratio of the increment of the ion temperature to that of the electron temperature can be approximated by $ΔT_i/ΔT_e \approx (m_i/m_e )^{1/4}$, where $m_i$ and $m_e$ are the ion and electron mass, respectively. We also present a theoretical model based on a magnetic-diffusion-dominated reconnection to explain the simulation result.
description: 7 pages, 3 figures
A solvable model for excitonic complexes in one dimension
Creators: name: Markvardsen, A. J.
name: Johnson, N. F.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: It is known experimentally that stable few-body clusters containing negatively-charged electrons (e) and positively-charged holes (h) can exist in low-dimensional semiconductor nanostructures. In addition to the familiar exciton (e+h), three-body 'charged excitons' (2e+h and 2h+e) have also been observed. Much less is known about the properties of such charged excitons since three-body problems are generally very difficult to solve, even numerically. Here we introduce a simple model, which can be considered as an extended Calogero model, to calculate analytically the energy spectra for both a charged exciton and a neutral exciton in a one-dimensional nanostructure, such as a finite-length quantum wire. Apart from its physical motivation, the model is of mathematical interest in that it can be related to the Heun (or Heine) equation and, as shown explicitly, highly accurate, closed form solutions can be obtained.
description: 14 pages, 3 figures, To appear in J. Math. Phys
The three-dimensional general relativistic Poynting-Robertson effect I: radial radiation field
Creators: name: De Falco, Vittorio
name: Bakala, Pavel
name: Battista, Emmanuele
name: Lančová, Debora
name: Falanga, Maurizio
name: Stella, Luigi
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we investigate the three-dimensional (3D) motion of a test particle in a stationary, axially symmetric spacetime around a central compact object, under the influence of a radiation field. To this aim we extend the two-dimensional (2D) version of the Poynting-Robertson effect in General Relativity (GR) that was developed in previous studies. The radiation flux is modeled by photons which travel along null geodesics in the 3D space of a Kerr background and are purely radial with respect to the zero angular momentum observer (ZAMO) frames. The 3D general relativistic equations of motion that we derive are consistent with the classical (i.e. non-GR) description of the Poynting-Robertson effect in 3D. The resulting dynamical system admits a critical hypersurface, on which radiation force balances gravity. Selected test particle orbits are calculated and displayed, and their properties described. It is found that test particles approaching the critical hypersurface at a finite latitude and with non-zero angular moment are subject to a latitudinal drift and asymptotically reach a circular orbit on the equator of the critical hypersurface, where they remain at rest with respect to the ZAMO. On the contrary, test particles that have lost all their angular momentum by the time they reach the critical hypersurface do not experience this latitudinal drift and stay at rest with respects to the ZAMO at fixed non-zero latitude.
description: 17 pages, 19 figures, accepted for publication on Physical Review D the 3rd of January 2019
Probing partially localized supergravity background of fundamental string ending on Dp-brane
Creators: name: Youm, Donam
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the dynamics of the probe fundamental string in the field background of the partially localized supergravity solution for the fundamental string ending on Dp-brane. We separately analyze the probe dynamics for its motion along the worldvolume direction and the transverse direction of the source Dp-brane. We compare the dynamics of the probe along the Dp-brane worldvolume direction to the BIon dynamics.
description: 20 pages, LaTeX, revised version to appear in Phys. Rev. D
Asymmetric energy transfers in driven nonequilibrium systems and arrow of time
Creators: name: Verma, Mahendra K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fundamental interactions are either fully or nearly symmetric under time reversal. But macroscopic phenomena have a definite arrow of time. Though there is no convergence on the origin of time's preferential direction, many researchers believe that the direction of time is towards increasing entropy. In this paper, we provide an alternate point of view. In driven-dissipative nonequilibrium systems forced at large scale, the energy flows from large scales to dissipative scales. This generic and multiscale process breaks time reversal symmetry and principle of detailed balance, thus can yield an arrow of time. In this paper we propose that conversion of large-scale coherence to small-scales incoherence could be treated as a dissipation mechanism for generic physical systems. We illustrate the above processes using turbulence as an example. We argue that the above picture of time irreversibility could be employed to the universe and to many-body quantum systems.
description: 5 pages, 1 figure
Integrable discretizations of the sine-Gordon equation
Creators: name: Boiti, M
name: Pempinelli, F
name: Prinari, B
name: Spire, A
Publisher: name: arXiv
Year: 2001
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The inverse scattering theory for the sine-Gordon equation discretized in space and both in space and time is considered.
description: 18 pages, LaTeX2e
Timelike self-similar spherically symmetric perfect-fluid models
Creators: name: Goliath, Martin
name: Nilsson, Ulf S
name: Uggla, Claes
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Einstein's field equations for timelike self-similar spherically symmetric perfect-fluid models are investigated. The field equations are rewritten as a first-order system of autonomous differential equations. Dimensionless variables are chosen in such a way that the number of equations in the coupled system is reduced as far as possible and so that the reduced phase space becomes compact and regular. The system is subsequently analysed qualitatively using the theory of dynamical systems.
description: 23 pages, 6 eps-figures
Comment on ``Intermittent Synchronization in a Pair of Coupled Chaotic Pendula"
Creators: name: Muruganandam, P.
name: Parthasarathy, S.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The main aim of this comment is to emphasize that the conditional Lyapunov exponents play an important role in distinguishing between intermittent and persistent synchronization, when the analytic criteria for asymptotic stability are not uniformly obeyed.
description: 2 pages, RevTeX 4, 1 EPS figure
title: Die Versatilität freier vaskularisierter Knochentransplantate zur Rekonstruktion an der oberen Extremität – funktionelle Ergebnisse
Creators: name: Amiri, Omid
name: Strouthou, Iliana
name: Philipps , Hubertus
name: Rein , Susanne
name: Taha, Hischam
name: Kremer , Thomas
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Fragestellung: Bei Minderperfusion von Knochen oder ossären Defekten kann die Knochenheilung ausbleiben. Vaskularisierte Knochentransplantate sind hier eine therapeutische Option. Ziel dieser Studie war die Evaluation der funktionellen Ergebnisse nach mikrochirurgischen knöchernen Rekonstruktionen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
Structural characterization of YBa(2)Cu(3)O(7)/Y(2)O(3) composite films
Creators: name: Broussard, P. R.
name: Wall, M. A.
name: Talvacchio, J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Using 4-circle x-ray diffraction and transmission electron microscopy we have studied the microstructure and in-plane orientation of the phases present in thin film composite mixtures of YBa(2)Cu(3)O(7) and Y(2)O(3). We see a high degree of in-plane orientation and have verified a previous prediction for the in-plane order of Y(2)BaCuO(5) on (110) MgO. Transmission electron microscopy shows the composite films to be a mixture of two phases, with YBCO grain sizes of 1 micron. We have also compared our observations of the in-plane order to the predictions of a modified near coincidence site lattice model.
description: To be published in Journal of Materials Research, (4 pages, 4 jpeg figures)
Aqueous Inflammation and Ischemia-Related Biomarkers in Neovascular Glaucoma with Stable Iris Neovascularization
Creators: name: Sun, Chuan
name: Zhang, Hongsong
name: Tang, Yan
name: Chen, You
name: Li, Yuxin
name: Nie, Chuang
name: Gu, Jianwen
name: Luo, Ling
name: Wang, Zhijun
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Purpose: To characterize the aqueous levels of inflammation and ischemia-related biomarkers in a spectrum of retinal ischemic conditions, including neovascular glaucoma (NVG) with stable iris neovascularization after pan retinal photocoagulation (PRP) and anti-VEGF treatment. Methods: Aqueous samples were collected from 139 eyes including NVG (n = 12), stable NVG (n = 26), CRVO (n = 11), NPDR (n = 18), PACG (n = 18), PDR (n = 25), BRVO (n = 7) and cataract (n = 22). The levels of VEGF-A, IL-8 and EPO were measured with ELISA. Results: Aqueous VEGF-A significantly decreased after anti-VEGF and PRP, from 983.79 ± 821.16 pg/ml in the NVG group (n = 11) to 256.50 ± 51.14 pg/ml in the stable NVG group (n = 24) (P = .015). Aqueous VEGF-A in stable NVG group (256.50 ± 51.14 pg/ml, n = 24) was significantly higher (ANOVA, P < .001) than in CRVO (212.10 ± 19.84 pg/ml, n = 7, P = .017), NPDR (221.18 ± 38.21 pg/ml, n = 14, P = .015), BRVO (213.14 ± 48.50 pg/ml, n = 6, P = .028) and cataract group (185.30 ± 34.35 pg/ml, n = 22, P < .001). Aqueous IL-8 in stable NVG group (74.82 ± 10.78 pg/ml, n = 24) was significantly higher (ANOVA, P < .001) than in CRVO (65.19 ± 15.34 pg/ml, n = 11, P = .032) and cataract group (54.11 ± 12.28 pg/ml, n = 22, P < .001). Aqueous EPO in stable NVG group (17.48 ± 3.02 pg/ml, n = 24) was significantly higher (ANOVA, P < .001) than in BRVO (14.98 ± 2.57 pg/ml, n = 7, P = .034) and cataract group (13.50 ± 2.65 pg/ml, n = 22, P < .001). Aqueous concentrations of VEGF-A and IL-8 correlated positively with IOP (r = 0.413, P < .001, r = 0.349, P < .001, respectively, r = correlation coefficient). VEGF-A correlated positively with IL-8 and EPO (P < .001, P = .002, respectively). IL-8 correlated positively with EPO (P < .001). Conclusions: The aqueous levels of VEGF-A, IL-8 and EPO in NVG patients with stable iris neovascularization, who had received PRP and anti-VEGF, were still significantly higher than in control groups with some retinal ischemic conditions.
Additional file 5 of Analysis of EpCAM positive cells isolated from sentinel lymph nodes of breast cancer patients identifies subpopulations of cells with distinct transcription profiles
Creators: name: Tveito, Siri
name: Andersen, Kristin
name: Kåresen, Rolf
name: Fodstad, Øystein
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: Computational Biology

description: Authors’ original file for figure 3
INCIDENTAL HISTOPATHOLOGICAL FINDINGS IN UTERUS: A POSTMORTEM STUDY
Creators: name: Abhijeet Sehrawat
name: Ankita Kakkar
name: Anshul Saxena
name: Sarita Sehrawat
name: Sahil Sharma
name: Vikrant Mehta
Publisher: name: Zenodo
Year: 2024
Subjects: Autopsy, Histopathology, Uterus, Fibroid, Tumour.

description: Abstract

Introduction: The uterus plays a crucial role in human reproduction and is central to the development of new life. Fibroids, medically known as uterine fibroids or leiomyomas, are non-cancerous growths that develop within the muscular wall of the uterus. They are quite common, affecting many women during their reproductive years. Objectives: Incidental histopathological findings during postmortem of female bodies coming to mortuary. Methods: Data as per proforma was collected from female cases which met our inclusion criteria from 1 July 2021 to 30 June 2022. Results: Fibroids were most common histopathological finding. Conclusion: Due to influence of hormones, size of uterus was found higher among early reproductive females as well as fibroids (leiomyoma) which were most common benign pathology findings were found among them and are largely influenced by hormones.
Covariant constraints of massive gravity in metric formulation
Creators: name: Akagi, Satoshi
name: Mori, Taisaku
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a simple method for deriving the constraints of the de Rham-Gabadadze-Tolley model in the metric and the Lagrangian formulation, as possible as keeping the Lorentz covariance. In our formulation, it is not necessary to use the Hamilton analysis, the vielbein formulation, nor the Stuckelberg trick for showing the Boulwer-Deser ghost-freeness. It realizes the Lorentz covariant expressions of the constraints in a certain parameter region.
description: 18 pages, no figures
An analysis of the relationship between ABCC8 and KCNJ11 gene polymorphisms and diabetic retinopathy in Turkish population
Creators: name: Alp, Ebru
name: Doguizi, Sibel
name: Icduygu, Fadime Mutlu
name: Akgun, Egemen
name: Sekeroglu, Mehmet Ali
name: Ozer, Murat Atabey
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Mental Health

description: Diabetic retinopathy (DR) occurs due to high blood glucose damage to the retina and leads to blindness if left untreated. KATP and related genes (KCNJ11 and ABCC8) play an important role in insulin secretion by glucose-stimulated pancreatic beta cells and the regulation of insulin secretion. KCNJ11 E23K (rs5219), ABCC8–3 C/T (rs1799854), Thr759Thr (rs1801261) and Arg1273Arg (rs1799859) are among the possible related single nucleotide polymorphisms (SNPs). The aim of this study is to find out how DR and these SNPs are associated with one another in the Turkish population. This study included 176 patients with type 2 diabetes mellitus without retinopathy (T2DM-rp), 177 DR patients, and 204 controls. Genomic DNA was extracted from whole blood, and genotypes were determined by the PCR-RFLP method. In the present study, a significant difference was not found between all the groups in terms of Arg1273Arg polymorphism located in the ABCC8 gene. The T allele and the TT genotype in the −3 C/T polymorphism in this gene may have a protective effect in the development of DR (p = 0.036 for the TT genotype; p = 0.034 for T allele) and PDR (p = 0.042 and 0.025 for the TT genotype). The AA genotype showed a significant increase in the DR group compared to T2DM-rp in the KCNJ11 E23K polymorphism (p = 0.046). Consequently, the T allele and TT genotype in the −3 C/T polymorphism of the ABCC8 gene may have a protective marker on the development of DR and PDR, while the AA genotype in the E23K polymorphism of the KCNJ11 gene may be effective in the development of DR in the Turkish population.
Psilomma Forster 1856
Creators: name: Chemyreva, V. G.
name: Kolyada, V. A.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diapriidae
Psilomma

description: Key to species of the genus Psilomma
1. Anterior scutellar pit bare inside (Figs 81, 88); head with sparsely pubescence above: pubescence of gena distinctly denser than pubescence of vertex and occiput (Figs 82, 86); male A3 without projection at base of emargination (Figs 84, 92)................................... 2
– Anterior scutellar pit pubescent inside, covered by upstanding setae (Figs 94, 97, 101, 105); head with dense pubescence above: pubescence of gena, vertex and occiput similar (Figs 97, 101); male A3 with small projection at base of emargination (Figs 99, 106)..............................................................................................................................................… 3
 2. Pronotal anterior corners weakly projecting, rounded (Fig. 82); medial furrow at the base of T2 deeper, wider and always longer than lateral furrows (Fig. 81); S2 of female without round projecting at base in lateral view (Fig. 79).....................…  P. calaris sp. n.
 – Pronotal anterior corners strongly projecting, sharped (Fig. 86); medial furrow at the base of T2 no deeper, no longer (rare slightly longer) and no wider than lateral furrows (Fig. 88); S2 of female with round projecting at the base in lateral view.... P. dubia Kieffer
 3. Face slightly wider than high (Fig. 95); female А9–А14 about as wide as long (Fig. 96); male antenna yellow or pale brown, А3–А14 with short recumbent pubescence (Figs 98, 99).................................................................................................… P. fuscicornis Kieffer
 – Face slightly higher than wide (Fig. 102); female А9–А14 distinctly longer than wide (Fig. 103); male antenna brown, А3–А14 with long semi-erect pubescence (Figs 104, 106)...............................................................................................… P. fusciscapis Förster
description: Published as part of Chemyreva, V. G. & Kolyada, V. A., 2021, Review of the subtribe Psilommina (Hymenoptera: Diapriidae, Belythinae) from Russian fauna, pp. 1-34 in Far Eastern Entomologist 436 on pages 26-27, DOI: 10.25221/fee.436.1, http://zenodo.org/record/7166134
A multibaker map for shear flow and viscous heating
Creators: name: Matyas, Laszlo
name: Tel, Tamas
name: Vollmer, Juergen
Publisher: name: arXiv
Year: 2001
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A consistent description of shear flow and the accompanied viscous heating as well the associated entropy balance is given in the framework of a deterministic dynamical system. A laminar shear flow is modeled by a Hamiltonian multibaker map which drives velocity and temperature fields. In an appropriate macroscopic limit one recovers the Navier-Stokes and heat conduction equations along with the associated entropy balance. This indicates that results of nonequilibrium thermodynamics can be described by means of an abstract, sufficiently chaotic and mixing dynamics. A thermostating algorithm can also be incorporated into this framework.
description: 11 pages; RevTex with multicol+graphicx packages; eps-figures