cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Luminosity Function of Gamma-Ray Bursts Derived Without Benefit of Redshifts
Creators: name: Schmidt, Maarten
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the Euclidean value of for gamma-ray bursts (GRB) selected on a timescale of 1024 ms is correlated with spectral hardness. The value of ranges from 0.42 for soft bursts to 0.26 for the hardest bursts. Given that the Euclidean value of for cosmological objects in a well defined sample is a distance indicator, the hard bursts must reside at larger redshifts and therefore be more luminous than the soft bursts. The resulting luminosity-hardness correlation cannot be shown explicitly due to the small number of observed GRB redshifts at the present time. Based on the -hardness correlation, we derive the luminosity function of GRBs without using any redshifts, but we have to make an assumption how the comoving GRB rate varies with redshift. We present luminosity functions for three models of the GRB rate as a function of redshift, based on star formation rates. The peak luminosity functions are approximately broken power laws with an isotropic-equivalent break luminosity of around 10^51.5 erg s^-1 in the 50-300 keV range and total local rate densities of 0.5 Gpc^-3 y^-1. Predicted GRB counts as a function of flux and redshift are presented. Based on the GRB luminosity function, we carry out a simulation to produce the luminosity-hardness correlation, which shows that the hardest GRBs are about 20 times more luminous than the softest ones.
description: 18 pages, 7 figures, accepted for publication in ApJ
Pelochrista subtiliana
Creators: name: Kopp, Andreas
name: Keller, W. C. F.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Pelochrista
Pelochrista subtiliana

description: Pelochrista subtiliana
 (Jäckh, 1960)
 konnte am 23.6.2012 am Tag und in der Nacht mit je einem Exemplar erstmals für die Schweiz nachgewiesen werden. Die Biologie dieser Wickler-Art ist teilweise unbekannt. Die nächsten Verwandten innerhalb der Gattung leben entweder an Artemisia oder Carduus - und Centaurea -Arten.
description: Published as part of Kopp, Andreas & Keller, W. C. F., 2015, Zweiter Beitrag zur Kenntnis der Schmetterlingsfauna des Schaffhauser Randen, pp. 111-117 in Entomo Helvetica 8 on page 114, DOI: 10.5169/seals-985939, http://zenodo.org/record/7745755
title: Chromatographic methods applied to the separation and determination of some metals
Creators: name: Dawson, Joseph
Publisher: name: The University of Edinburgh
Year: 1957
Subjects: subject: Annexe MSc Digitisation Project 2022 Block 25
subject: antimony
subject: tin
subject: lead
subject: anion exchange resins
subject: malonic acid
subject: elutriant
subject: anion complexes
subject: ion-exchange
subject: ion-exchange equilibria

description: A method is detailed for the determination of lead, -antimony and tin which is based on the separation of the antimony and tin by means of anion exchange resins using malonic acid as elutriant. In the presence of malonic acid these elements form anion complexes, the tin being held by the resin while antimony «nd lead pass through the column. Investigations of the ion-exchange equilibria have shown that the separation factor is high and it is claimed that the method constitutes the first widely applicable method for these elements using anion exchange. All three elements are determined colorimetrically after separation, antimony as iodoantimonate, lead with dithizone reagent, and tin (after elution from the ion-exchange column with 9K sulphuric acid) as iodostannate. The colorimetric determination of tin is a development from this work and it is suggested that the method might form the basis for the determination of a range of metals. The proposed method is also rapid, capable of use by relatively inexperienced operators and is particularly suitable for the analysis of White Metals, Bewter metals and other lead or tin alloys. Results of the analysis of a number of alloys are more reliable than those by classical methods and the method is capable of application over a wide range of concentrations. It is possible to determine one part of any element in a 100-fold excess of an other or others combined, and 0.5mg of any of the elements can be determined. with certainty.
Cellular solid behaviour of liquid crystal colloids. 2. Mechanical properties
Creators: name: Anderson, V. J.
name: Terentjev, E. M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: This paper presents the results of a rheological study of thermotropic nematic colloids aggregated into cellular structures. Small sterically stabilised PMMA particles dispersed in a liquid crystal matrix densely pack on cell interfaces, but reversibly mix with the matrix when the system is heated above Tni. We obtain a remarkably high elastic modulus, G'~10^5 Pa, which is a nearly linear function of particle concentration. A characteristic yield stress is required to disrupt the continuity of cellular structure and liquify the response. The colloid aggregation in a ``poor nematic'' MBBA has the same cellular morphology as in the ``good nematic'' 5CB, but the elastic strength is at least an order of magnitude lower. These findings are supported by theoretical arguments based on the high surface tension interfaces of a foam-like cellular system, taking into account the local melting of nematic liquid and the depletion locking of packed particles on interfaces.
description: Latex 2e (EPJ style) EPS figures included (poor quality to comply with space limitations)
Bi-directional Value Learning for Risk-aware Planning Under Uncertainty: Extended Version
Creators: name: Kim, Sung-Kyun
name: Thakker, Rohan
name: Agha-mohammadi, Ali-akbar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Decision-making under uncertainty is a crucial ability for autonomous systems. In its most general form, this problem can be formulated as a Partially Observable Markov Decision Process (POMDP). The solution policy of a POMDP can be implicitly encoded as a value function. In partially observable settings, the value function is typically learned via forward simulation of the system evolution. Focusing on accurate and long-range risk assessment, we propose a novel method, where the value function is learned in different phases via a bi-directional search in belief space. A backward value learning process provides a long-range and risk-aware base policy. A forward value learning process ensures local optimality and updates the policy via forward simulations. We consider a class of scalable and continuous-space rover navigation problems (RNP) to assess the safety, scalability, and optimality of the proposed algorithm. The results demonstrate the capabilities of the proposed algorithm in evaluating long-range risk/safety of the planner while addressing continuous problems with long planning horizons.
description: Copyright 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
MOESM1 of Is male condition corrected with song features in Dusky Warblers (Phylloscopus fuscatus)
Creators: name: Wang, Jiaojiao
name: Liu, Jianping
name: Zhang, Zhenqun
name: Ren, Hongxin
name: Gao, Lijie
name: Hou, Jianhua
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Additional file 1: Table S1. Descriptive statistics of sound parameters in Dusky Warblers.
Muscle-Specific Mis-Splicing and Heart Disease Exemplified by RBM20
Creators: name: Maimaiti Rexiati
name: Mingming Sun
name: Guo, Wei
Publisher: name: Health Research Alliance
Year: 2019
Subjects: subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine
subject: 111601 Cell Physiology
subject: FOS: Basic medicine
subject: Diseases
subject: 110105 Medical Biochemistry: Nucleic Acids
subject: 111207 Molecular Targets

description: Alternative splicing is an essential post-transcriptional process to generate multiple functional RNAs or proteins from a single transcript. Progress in RNA biology has led to a better understanding of muscle-specific RNA splicing in heart disease. The recent discovery of the muscle-specific splicing factor RNA-binding motif 20 (RBM20) not only provided great insights into the general alternative splicing mechanism but also demonstrated molecular mechanism of how this splicing factor is associated with dilated cardiomyopathy. Here, we review our current knowledge of muscle-specific splicing factors and heart disease, with an emphasis on RBM20 and its targets, RBM20-dependent alternative splicing mechanism, RBM20 disease origin in induced Pluripotent Stem Cells (iPSCs), and RBM20 mutations in dilated cardiomyopathy. In the end, we will discuss the multifunctional role of RBM20 and manipulation of RBM20 as a potential therapeutic target for heart disease.
title: Critics of colonial policy in Kenya: with special reference to Norman Leys and W. Norman McGregor Ross
Creators: name: Wylie, Diana S.
Publisher: name: The University of Edinburgh
Year: 1974
Subjects: subject: Annexe MSc Digitisation Project 2022 Block 36
subject: colonial policy
subject: Kenya
subject: Norman Leys
subject: W. Norman McGregor Ross
subject: inter-war years
subject: left-wing humanitarians
subject: British public opinion
subject: self-government
subject: East and Central Africa
subject: settlers

description: During the inter-war years a number of influential left-wing humanitarians tried to inform and arouse British public opinion in order to put a deadlock on the plans of the Kenya settlers for self-government. These liberals were successful in creating a political force to balance that of /a^e/y r'-ea.So^ the settlers and/a Great White Dominion was largely for this reason not created in East and Central Africa and a strong Imperial Trust was retained. Two men who had formerly been civil servants in Kenya, Norman Leys and W. Mc®or Ross, were responsible for initially informing members of the public about the injustices perpetrated on Africans by the settlers and for maintaining a flow of pro—African propaganda in books, in the press and through a number of left-wing and humanitarian organisations, though chiefly through the Labour Party. They described the significant subsidy of white settlement by African taxation and labour, the complete absence of attempts to develop independent African production, the effective enslavement of the African in the modern industrial system. Leys and Ross we® motivated by a desire to apply Christian ethical principles to the injustices of East Africa and used the socialist movement as their vehicle for achieving substantial political and economic reforms: peasant agriculture must be given direct economic aid by the State; Africans must be actively prepared for self-government in a multi-racial state; the African must own his own land and be free to labour on it for his own profit; European privileges must be extended to Africans, thus realising the traditional Imperial ideal of equal rights. They applied to Kenya the means which had helped to improve the lot of the British worker: education, the franchise, unions and co-operatives. Without these reforms, they predicted, a devastating African rebellion would occur. They failed to impress the Colonial Office with the urgency of the need for reform, though various commissions on, for example, land and taxation, confirmed their allegations, and were regarded there as partisan fanatics; as the economy of Kenya was dependent on settler production, initiative for change would have to come from Africans themselves. Leys and Ross helped to thwart the acquisition of greater political power by the settlers while African protest matured.
Heritage and food history: a critical assessment
Creators: name: Laura, Di Fiore
Publisher: name: Zenodo
Year: 2019
Subjects: Quality labelling; UNESCO; Intangible Cultural Heritage (ICH); Place-based Identities; Tradition; Uses of the Past; Authenticity.

description: The heritagization of food is based on cultural constructions creating or confirming identity markers. As the topic of heritage is one the most recently addressed within the wide bibliography of food studies, in particular food history has been analysing how societies and groups historically produced food heritages. This essay chooses the UNESCO international food labelling as a lens to analyse limits and critic points of the institutional heritagizazion. Firstly, the essay will examine the place-based identity paradigms involved in UNESCO institutional procedures and their articulation on different spatial levels, which tend to overlap and intersect each other in complex geographies. Secondly, it will analyse risks and problems of the constant recourse to past and history – related to issues of authenticity, tradition, nostalgia – aimed at legitimizing food heritage and identity claim.
description: This is Chapter Ii of the book Food Heritage and Nationalism in Europe edited by Ilaria Porciani. This book is a result of the European Union- funded Horizon 2020 research project CoHERE (Critical Heritages: performing and representing identities in Europe). CoHERE received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 693289.
Open Logistics Magazine – Edition No. 4
Creators: name: Tüllmann, Carina
name: Kamen, Annika
Publisher: name: Zenodo
Year: 2024
Subjects: open source
logistics
supply chain management
sustainability
buisness models
licenses
Cyber Resilience Act
value of open source

description: The importance of open source as an innovation driver is currently on everyone's lips: indeed, the "pain points" of logistics can be solved with the help of open source. The Open Logistics Magazine takes some deep dives into specific open source topics for logistics and supply chain management.

In this version of the magazine, you find: Public property as an economic factor: What open source software is worth, New business models for IT companies, Green logistics: From freestyle via duty to standard, One for all: the Open Logistics Foundation License, Cyber Security: The responsibility of companies is increasing – interview with Miriam Seyfarth (OSBA),
The structure of radiative shock waves. III. The model grid for partially ionized hydrogen gas
Creators: name: Fadeyev, Yu. A.
name: Gillet, D.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The grid of the models of radiative shock waves propagating through partially ionized hydrogen gas with temperature 3000K <= T_1 <= 8000K and density 10^{-12} gm/cm^3 <= ρ_1 <= 10^{-9}gm/cm^3 is computed for shock velocities 20 km/s <= U_1 <= 90 km/s. The fraction of the total energy of the shock wave irreversibly lost due to radiation flux ranges from 0.3 to 0.8 for 20 km/s <= U_1 <= 70 km/s. The postshock gas is compressed mostly due to radiative cooling in the hydrogen recombination zone and final compression ratios are within 1
description: 11 pages, 11 figures, LaTeX, to appear in AA
Eucosma fervidana
Creators: name: Kopp, Andreas
name: Keller, W. C. F.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Eucosma
Eucosma fervidana

description: Eucosma fervidana
 (Zeller, 1847)
 wurde am 9.8.2008 in zwei Exempla- ren am Licht gefunden. Diese Wickler-Art ist ein weiterer Neufund für die Schweiz und lebt in Meris- hausen an Berg-Aster (Aster amellus), die in grossen Beständen vor- kommt. Neben einem weiteren selten gefunde- nen Wickler Eucosma tripoliana (Barrett, 1880) leben auch zwei Sackträger-Motten (Coleophoridae) ausschliesslich an dieser Pflanze. Coleophora amellivora Baldizzone, 1979 und Coleophora obscenella Herrich-Schäffer, 1855 konnten auch an Aster in der Gräte nachgewiesen werden. Die letztere Art wurde lange Zeit mit Coleophora virgaureae Stainton, 1857 zusammengelegt und erst in den letzten Jahren wieder als eigenständi- ge Art geführt. Nach Baldizzone & Tabell (2002) lebt C. obscenella an Berg-Aster und C. virgaureae an Gewöhnlicher Goldrute (Solidago virgaurea). Es sind aber auch klare genitalmorphologische Unterschiede zu erkennen.
description: Published as part of Kopp, Andreas & Keller, W. C. F., 2015, Zweiter Beitrag zur Kenntnis der Schmetterlingsfauna des Schaffhauser Randen, pp. 111-117 in Entomo Helvetica 8 on page 114, DOI: 10.5169/seals-985939, http://zenodo.org/record/7745755
Emergence of intrinsic superconductivity below 1.178 K in the topologically non-trivial semimetal state of CaSn3
Creators: name: Zhu, Y. L.
name: Hu, J.
name: Womack, F. N.
name: Graf, D.
name: Wang, Y.
name: Adams, P. W.
name: Mao, Z. Q.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topological materials which are also superconducting are of great current interest, since they may exhibit a non-trivial topologically-mediated superconducting phase. Although there have been many reports of pressure-tuned or chemical-doping-induced superconductivity in a variety of topological materials, there have been few examples of intrinsic, ambient pressure superconductivity in a topological system having a stoichiometric composition. Here, we report that the pure intermetallic CaSn3 not only exhibits topological fermion properties but also has a superconducting phase at 1.178 K under ambient pressure. The topological fermion properties, including the nearly zero quasi-particle mass and the non-trivial Berry phase accumulated in cyclotron motions, were revealed from the de Haas-van Alphen (dHvA) quantum oscillation studies of this material. Although CaSn3 was previously reported to be superconducting at 4.2K, our studies show that the superconductivity at 4.2K is extrinsic and caused by Sn on the degraded surface, whereas its intrinsic bulk superconducting transition occurs at 1.178 K. These findings make CaSn3 a promising candidate for exploring new exotic states arising from the interplay between non-trivial band topology and superconductivity, e.g. topological superconductivity
description: 20 pages,4 figures
Additional file 1 of Genome-wide characterization of SDR gene family and its potential role in seed dormancy of Brassica napus L.
Creators: name: Zhang, Fugui
name: Chen, Tianhua
name: Liu, Nian
name: Hou, Xinzhe
name: Wang, Ling
name: Cai, Qingao
name: Li, Rui
name: Qian, Xingzhi
name: Xu, Hong
name: Zhu, Zonghe
name: Zheng, Wenyin
name: Yu, Yan
name: Zhou, Kejin
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1
Dynamic and static properties of the invaded cluster algorithm
Creators: name: Moriarty, K.
name: Machta, J.
name: Chayes, L. Y.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Simulations of the two-dimensional Ising and 3-state Potts models at their critical points are performed using the invaded cluster (IC) algorithm. It is argued that observables measured on a sub-lattice of size l should exhibit a crossover to Swendsen-Wang (SW) behavior for l sufficiently less than the lattice size L, and a scaling form is proposed to describe the crossover phenomenon. It is found that the energy autocorrelation time tau(l,L) for an l*l sub-lattice attains a maximum in the crossover region, and a dynamic exponent z for the IC algorithm is defined according to tau_max ~ L^z. Simulation results for the 3-state model yield z=.346(.002) which is smaller than values of the dynamic exponent found for the SW and Wolff algorithms and also less than the Li-Sokal bound. The results are less conclusive for the Ising model, but it appears that z
description: 21 pages with 12 figures
Sensitivity to sterile neutrino mixing using reactor antineutrinos
Creators: name: Behera, S. P.
name: Mishra, D. K.
name: Pant, L. M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The reactor antineutrinos are used for the precise measurement of oscillation parameters in the 3-neutrino model, and also used to investigate active-sterile neutrino mixing sensitivity in the 3$+$1 neutrino framework. In the present work, we study the feasibility of sterile neutrino search with the Indian Scintillator Matrix for Reactor Anti-Neutrino (ISMRAN) experimental set-up using electron antineutrinos ($\overlineν_e$) produced from reactor as a source. The so-called 3$+$1 scenario is considered for active-sterile neutrino mixing, which leads to projected exclusion curves in the sterile neutrino mass and mixing angle plane. The analysis is performed considering both the reactor and detector related parameters. It is found that, the ISMRAN set-up can observe the active-sterile neutrino mixing sensitivity for $\sin^{2}2θ_{14} \geq$ 0.064 and $Δm^{2}_{41}$ = 1.0 eV$^2$ at 90$\%$ confidence level for an exposure of 1 ton-year by using neutrinos produced from the DHRUVA reactor with thermal power of 100 MW$_{th}$. It is also observed that, there is a significant improvement of the active-sterile neutrino mixing parameter $\sin^{2}2θ_{14}$ to $\sim$ 0.03 at the same $Δm^{2}_{41}$ by putting the ISMRAN detector set-up at a distance of 20 m from the compact proto-type fast breeder reactor (PFBR) facility with thermal power of 1250 MW$_{th}$.
description: 10 pages, 11 figures; Published in Eur.Phys.J. C 79, 86 (2019)
Macroscopic resonant tunneling of magnetic flux
Creators: name: Averin, D. V.
name: Friedman, Jonathan R.
name: Lukens, J. E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have developed a quantitative theory of resonant tunneling of magnetic flux between discrete macroscopically distinct quantum states in SQUID systems. The theory is based on the standard density-matrix approach. Its new elements include the discussion of the two different relaxation mechanisms that exist for the double-well potential, and description of the ``photon-assisted'' tunneling driven by external rf radiation. It is shown that in the case of coherent flux dynamics, rf radiation should lead to splitting of the peaks of resonant flux tunneling, indicating that the resonant tunneling is a convenient tool for studying macroscopic quantum coherence of flux.
description: 11 pages, 8 figures
Lepton-flavor violation and two loop electroweak corrections to $(g-2)_μ$ in the B-L symmetry SSM
Creators: name: Yang, Jin-Lei
name: Feng, Tai-Fu
name: Yan, Yu-Li
name: Li, Wei
name: Zhao, Shu-Min
name: Zhang, Hai-Bin
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Charged lepton flavor violating processes are forbidden in the standard model (SM), hence the observation of charged lepton flavor transitions would represent a clear signal of new physics beyond the standard Model. In this work, we investigate some lepton flavor violating processes in the minimal supersymmetric extension of the SM with local $B-L$ gauge symmetry (B-LSSM). And including the corrections from some two loop diagrams to the anomalous dipole moments (MDM) of muon, we discuss the corresponding constraint on the relevant parameter space of the model. Considering the constraints from updated experimental data, the numerical results show that, new contributions in the B-LSSM enhance the MSSM predictions on the rates of $l_j-l_i$ transitions about one order of magnitude, and also enhance the MSSM prediction on the muon MDM. In addition, two loop electroweak corrections can make important contributions to the muon MDM in the B-LSSM.
description: 27 pages,9 figures, Published in PRD. arXiv admin note: text overlap with arXiv:1803.09904, arXiv:1806.01476
RBM20, a potential target for treatment of cardiomyopathy via titin isoform switching
Creators: name: Guo, Wei
name: Mingming Sun
Publisher: name: Health Research Alliance
Year: 2019
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine
subject: 111601 Cell Physiology
subject: FOS: Basic medicine
subject: 111207 Molecular Targets

description: Cardiomyopathy, also known as heart muscle dis- ease, is an unfavorable condition leading to alterations in myo- cardial contraction and/or impaired ability of ventricular fill- ing. The onset and development of cardiomyopathy have not currently been well defined. Titin is a giant multifunctional sarcomeric filament protein that provides passive stiffness to cardiomyocytes and has been implicated to play an important role in the origin and development of cardiomyopathy and heart failure. Titin-based passive stiffness can be mainly ad- justed by isoform switching and post-translational modifica- tions in the spring regions. Recently, genetic mutations of TTN have been identified that can also contribute to variable pas- sive stiffness, though the detailed mechanisms remain unclear. In this review, we will discuss titin isoform switching as it relates to alternative splicing during development stages and differences between species and muscle types. We provide an update on the regulatory mechanisms of TTN splicing con- trolled by RBM20 and cover the roles of TTN splicing in adjusting the diastolic stiffness and systolic compliance of the healthy and the failing heart. Finally, this review attempts to provide future directions for RBM20 as a potential target for pharmacological intervention in cardiomyopathy and heart failure.
Thermodynamic evidence of fractionalized excitations in α-RuCl3
Creators: name: Widmann, S.
name: Tsurkan, V.
name: Prishchenko, D. A.
name: Mazurenko, V. G.
name: Tsirlin, A. A.
name: Loidl, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Fractionalized excitations are of considerable interest in recent condensed-matter physics. Fractionalization of the spin degrees of freedom into localized and itinerant Majorana fermions are predicted for the Kitaev spin liquid, an exactly solvable model with bond-dependent interactions on a two-dimensional honeycomb lattice. As function of temperature, theory predicts a characteristic two-peak structure of the heat capacity as fingerprint of these excitations. Here we report on detailed heat-capacity experiments as function of temperature and magnetic field in high-quality single crystals of α-RuCl3 and undertook considerable efforts to determine the exact phonon background. We measured single-crystalline RhCl3 as non-magnetic reference and performed ab-initio calculations of the phonon density of states for both compounds. These ab-initio calculations document that the intrinsic phonon contribution to the heat capacity cannot be obtained by a simple rescaling of the nonmagnetic reference using differences in the atomic masses. Sizable renormalization is required even for non-magnetic RhCl3 with its minute difference from the title compound. In α-RuCl3 in zero magnetic field, excess heat capacity exists at temperatures well above the onset of magnetic order. In external magnetic fields far beyond quantum criticality, when long-range magnetic order is fully suppressed, the excess heat capacity exhibits the characteristic two-peak structure. In zero field, the lower peak just appears at temperatures around the onset of magnetic order and seems to be connected with canonical spin degrees of freedom. At higher fields, beyond the critical field, this peak is shifted to 10 K. The high-temperature peak located around 50 K is hardly influenced by external magnetic fields, carries the predicted amount of entropy, R/2 ln2, and may resemble remnants of Kitaev physics.
A formula for the hopping expansion of 8-vertex models coupled to an external field
Creators: name: Gattringer, Christof
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a generalized 8-vertex model where the vertices are coupled to a locally varying field. We rewrite the partition function as an integral over Grassmann variables. In this form it is possible to explicitly evaluate all terms of the hopping expansion. Applications of the resulting formula, in particular its relation to 2-D lattice field theories with fermions are discussed.
description: Revised version, to appear in Int. J. Mod. Phys. A. Remarks and references added, typos corrected
Bias and temperature dependence of the 0.7 conductance anomaly in Quantum Point Contacts
Creators: name: Kristensen, A.
name: Bruus, H.
name: Hansen, A. E.
name: Jensen, J. B.
name: Lindelof, P. E.
name: Marckmann, C. J.
name: Nygard, J.
name: Sorensen, C. B.
name: Beuscher, F.
name: Forchel, A.
name: Michel, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The 0.7 (2e^2/h) conductance anomaly is studied in strongly confined, etched GaAs/GaAlAs quantum point contacts, by measuring the differential conductance as a function of source-drain and gate bias as well as a function of temperature. We investigate in detail how, for a given gate voltage, the differential conductance depends on the finite bias voltage and find a so-called self-gating effect, which we correct for. The 0.7 anomaly at zero bias is found to evolve smoothly into a conductance plateau at 0.85 (2e^2/h) at finite bias. Varying the gate voltage the transition between the 1.0 and the 0.85 (2e^2/h) plateaus occurs for definite bias voltages, which defines a gate voltage dependent energy difference $Δ$. This energy difference is compared with the activation temperature T_a extracted from the experimentally observed activated behavior of the 0.7 anomaly at low bias. We find Δ= k_B T_a which lends support to the idea that the conductance anomaly is due to transmission through two conduction channels, of which the one with its subband edge Δbelow the chemical potential becomes thermally depopulated as the temperature is increased.
description: 9 pages (RevTex) with 9 figures (some in low resolution)
The Taurus Tunable Filter Field Galaxy Survey: Sample Selection and Narrowband Number-Counts
Creators: name: Jones, D. H.
name: Bland-Hawthorn, J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent evidence suggests a falling volume-averaged star-formation rate (SFR) over z ~ 1. It is not clear, however, the extent to which the selection of such samples influences the measurement of this quantity. Using the Taurus Tunable Filter (TTF) we have obtained an emission-line sample of faint star-forming galaxies over comparable lookback times: the TTF Field Galaxy Survey. By selecting through emission-lines, we are screening galaxies through a quantity that scales directly with star-formation activity for a given choice of initial mass function. The scanning narrowband technique furnishes a galaxy sample that differs from traditional broadband-selected surveys in both its volume-limited nature and selection of galaxies through emission-line flux. Three discrete wavelength intervals are covered, centered at H-alpha redshifts z = 0.08, 0.24 and 0.39. Galaxy characteristics are presented and comparisons made with existing surveys of both broadband and emission-line selection. When the number-counts of emission-line objects are compared with those expected on the basis of existing H-alpha surveys, we find an excess of ~ 3 times at the faintest limits. While these detections are yet to be independently confirmed, inspection of the stronger subsample of galaxies detected in both the line and continuum (line-on-continuum subsample; 13 %) is sufficient to support an excess population. This increase in the emission-line field population implies higher star-formation densities over z ~ 0.4. However, further study in the form of multi-object spectroscopic follow-up is necessary to quantify this and confirm the faintest detections in the sample.
description: 48 pages, 12 figures. To appear in the Astrophysical Journal. An abridged version of the Abstract is shown here
Chromospheric observations and magnetic configuration of a supergranular structure
Creators: name: Robustini, Carolina
name: Pozuelo, Sara Esteban
name: Leenaarts, Jorrit
name: Rodrìguez, Jaime de la Cruz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Unipolar magnetic regions are often associated with supergranular cells. The chromosphere above these regions is regulated by the magnetic field, but the field structure is poorly known. In unipolar regions, the fibrillar arrangement does not always coincide with magnetic field lines, and polarimetric observations are needed to establish the chromospheric magnetic topology. In an active region close to the limb, we observed a unipolar annular network of supergranular size. This supergranular structure harbours a radial distribution of the fibrils converging towards its centre. We observed this structure at different heights by taking data in the FeI 6301-6302 Å, H-α, CaII 8542 Å and the CaII H&K spectral lines with the CRISP and CHROMIS instruments at the Swedish 1-m Solar Telescope. We performed Milne-Eddington inversions of the spectropolarimetric data of FeI and applied the weak field approximation to CaII 8542 Å data to retrieve the magnetic field in the photosphere and chromosphere. We used magnetograms of CRISP, HINODE/SP and HMI to calculate the magnetic flux. We investigated the velocity using the line-of-sight velocities computed from the Milne-Eddington inversion and from Doppler shift of the K$_3$ feature in the CaII K spectral line. To describe the typical spectral profiles characterising the chromosphere above the supergranular structure, we performed a K-mean clustering of the spectra in CaIIK. The photospheric magnetic flux is not balanced. The magnetic field vector at chromospheric heights, retrieved by the weak field approximation, indicates that the field lines within the supegranular cell tend to point inwards, and might form a canopy above the unipolar region. In the centre of the supergranular cell hosting the unipolar region, we observe a persistent chromospheric brightening coinciding with a strong gradient in the line-of-sight velocity.
description: 12 pages, 12 figures, accepted for publication in A&A
Insulin regulates titin pre-mRNA splicing through the PI3K-Akt-mTOR kinase axis in a RBM20-dependent manner
Creators: name: Chaoqun Zhu
Publisher: name: Health Research Alliance
Year: 2019
Subjects: subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine
subject: 111601 Cell Physiology
subject: FOS: Basic medicine
subject: 110306 Endocrinology
subject: 111207 Molecular Targets

description: Titin, a giant sarcomeric protein, is largely responsible for the diastolic properties of the heart. It has two major isoforms, N2B and N2BA due to pre-mRNA splicing regulated mainly by a splicing factor RNA binding motif 20 (RBM20). Mis-splicing of titin pre-mRNA in response to external stimuli may lead to altered ratio of N2B to N2BA, and thus, impaired cardiac contractile function. However, little is known about titin alternative splicing in response to external stimuli. Here, we reported the detailed mechanisms of titin alternative splicing in re- sponse to insulin. Insulin treatment in cultured neonatal rat cardiomyocytes (NRCMs) activated the PI3K-Akt- mTOR kinase axis, leading to increased N2B expression in the presence of RBM20, but not in NRCMs in the absence of RBM20. By inhibiting this kinase axis with inhibitors, decreased N2B isoform was observed in NRCMs and also in diabetic rat model treated with streptozotocin, but not in NRCMs and diabetic rats in the absence of RBM20. In addition to the alteration of titin isoform ratios in response to insulin, we found that RBM20 ex- pression was increased in NRCMs with insulin treatment, suggesting that RBM20 levels were also regulated by insulin-induced kinase axis. Further, knockdown of p70S6K1 with siRNA reduced both RBM20 and N2B levels, while knockdown of 4E-BP1 elevated expression levels of RBM20 and N2B. These findings reveal a major signal transduction pathway for insulin-induced titin alternative splicing, and place RBM20 in a central position in the pathway, which is consistent with the reputed role of RBM20 in titin alternative splicing. Findings from this study shed light on gene therapeutic strategies at the molecular level by correction of pre-mRNA mis-splicing.
Virtual Compton Scattering measurements in the nucleon resonance region
Creators: name: Blomberg, A.
name: Atac, H.
name: Sparveris, N.
name: Paolone, M.
name: Achenbach, P.
name: Benali, M.
name: Beričič, J.
name: Böhm, R.
name: Correa, L.
name: Distler, M. O.
name: Esser, A.
name: Flay, D.
name: Fonvieille, H.
name: Friščić, I.
name: Kohl, Y.
name: Merkel, H.
name: Müller, U.
name: Meziani, Z. E.
name: Mihovilovic, M.
name: Pochodzalla, J.
name: Polychronopoulou, A.
name: Pasquini, B.
name: Schoth, M.
name: Schulz, F.
name: Schlimme, S.
name: Sfienti, C.
name: Sirca, S.
name: Weber, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report on new measurements of the electric Generalized Polarizability (GP) of the proton $α_E$ in a kinematic region where a puzzling dependence on momentum transfer has been observed, and we have found that $α_E = (5.3 \pm 0.6_{stat} \pm 1.3_{sys})~10^{-4} fm^3$ at $Q^2=0.20~(GeV/c)^2$. The new measurements, when considered along with the rest of the world data, suggest that $α_E$ can be described by either a local plateau or by an enhancement in the region $Q^2=0.20~(GeV/c)^2$ to $0.33~(GeV/c)^2$. The experiment also provides the first measurement of the Coulomb quadrupole amplitude in the $N \rightarrow Δ$ transition through the exploration of the $p(e,e'p)γ$ reaction. The new measurement gives $CMR = (-4.4 \pm 0.8_{stat} \pm 0.6_{sys})~\%$ at $Q^2=0.20~(GeV/c)^2$ and is consistent with the results from the pion electroproduction world data. It has been obtained using a completely different extraction method, and therefore represents a strong validation test of the world data model uncertainties.
In vivo human MRI at 0.35 mm reveals up to 15 ms T2* changes within gray matter across depths at 7 T
Creators: name: Gulban, Omer Faruk
name: Bollmann, Saskia
name: Huber, Laurentius
name: Kay, Kendrick
name: Poser, Benedikt A.
name: De Martino, Federico
name: Goebel, Rainer
name: Ivanov, Dimo
Publisher: name: figshare
Year: 2021
Subjects: Neuroscience

description: OHBM 2021 conference poster & video.
The video is a shortened version of my ISMRM 2021 conference contribution.The poster is done from scratch for OHBM conference.
Additional file 1 of A novel PDPN antagonist peptide CY12-RP2 inhibits melanoma growth via Wnt/β-catenin and modulates the immune cells
Creators: name: Feng, Chunyan
name: Yu, Albert
name: Wang, Zhongfu
name: Wang, Kun
name: Chen, Jiawei
name: Wu, Yaojiong
name: Deng, Ting
name: Chen, Huaqing
name: Hou, Yibo
name: Ma, Shaohua
name: Dai, Xiaoyong
name: Huang, Laiqiang
Publisher: name: figshare
Year: 2024
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Fig. S1. PDPN was upregulated in melanoma, which was prognostically relevant to melanoma patient survival. Fig. S2. The effects of PDPN on migration and invasion could be modulated by SKL2001and IWR1. Fig. S3. The identification and functional analysis of PDPN- binding peptides. Fig. S4. Effects and toxicity of CY12-RP2 in vivo. Fig. S5. The inhibition of cells metastasis and invasion by CY12-RP2 can be reversed by SKL2001. Fig. S6. The expression of PDPN is associated with immune infiltration of melanoma tumors. Fig. S7. CY12-RP2 modifies the population of NK cells in the spleen and lung of mice. Fig. S8. The effects of CY12-RP2 on the proportion of macrophages (M1 and M2) in the spleen and lung of mice. Table 1. Antibodies applied for western-blotting, flow cytometry, immunofluorescence and immunohistochemistry analysis
Imaging Microwave Electric Fields Using a Near-Field Scanning Microwave Microscope
Creators: name: Dutta, S. K.
name: Vlahacos, C. P.
name: Steinhauer, D. E.
name: Thanawalla, Ashfaq S.
name: Feenstra, B. J.
name: Wellstood, F. C.
name: Anlage, Steven M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: By scanning a fine open-ended coaxial probe above an operating microwave device, we image local electric fields generated by the device at microwave frequencies. The probe is sensitive to the electric flux normal to the face of its center conductor, allowing different components of the field to be imaged by orienting the probe appropriately. Using a simple model of the microscope, we are able to interpret the system's output and determine the magnitude of the electric field at the probe tip. We show images of electric field components above a copper microstrip transmission line driven at 8 GHz, with a spatial resolution of approximately 200 $μ$m.
description: 10 pages, 3 eps-figures, accepted by Appl. Phys. Lett
Pre-mRNA mis-splicing of sarcomeric genes in heart failure
Creators: name: Chaoqun Zhu
name: Zhilong Chen
name: Guo, Wei
Publisher: name: Health Research Alliance
Year: 2019
Subjects: subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine
subject: 111601 Cell Physiology
subject: FOS: Basic medicine
subject: 111207 Molecular Targets

description: Pre-mRNA splicing is an important biological process that allows production of multiple proteins from a single gene in the genome, and mainly contributes to protein diversity in eukaryotic organisms. Alternative splicing is commonly governed by RNA binding proteins to meet the ever-changing demands of the cell. However, the mis-splicing may lead to human diseases. In the heart of human, mis-regulation of alternative splicing has been associated with heart failure. In this short review, we focus on alternative splicing of sarcomeric genes and review mis-splicing related heart failure with relatively well studied Sarcomeric genes and splicing mecha- nisms with identified regulatory factors. The perspective of alternative splicing based therapeutic strategies in heart failure has also been discussed.
Run-and-tumble motion with step-like responses to a stochastic input
Creators: name: Dev, Subrata
name: Chatterjee, Sakuntala
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study a simple run-and-tumble random walk whose switching frequency from run mode to tumble mode and the reverse depend on a stochastic signal. We consider a particularly sharp, step-like dependence, where the run to tumble switching probability jumps from zero to one as the signal crosses a particular value (say y_1 ) from below. Similarly, tumble to run switching probability also shows a jump like this as the signal crosses another value (y_2 < y_1 ) from above. We are interested in characterizing the effect of signaling noise on the long time behavior of the random walker. We consider two different time-evolutions of the stochastic signal. In one case, the signal dynamics is an independent stochastic process and does not depend on the run-and-tumble motion. In this case we can analytically calculate the mean value and the complete distribution function of the run duration and tumble duration. In the second case, we assume that the signal dynamics is influenced by the spatial location of the random walker. For this system, we numerically measure the steady state position distribution of the random walker. We discuss some similarities and differences between our system and E.coli chemotaxis, which is another well-known run-and-tumble motion encountered in nature.
description: Published in Physical Rev. E
In vivo human MRI at 0.35 mm reveals up to 15 ms T 2 changes within gray matter across depths at 7 T
Creators: name: Gulban, Omer Faruk
name: Bollmann, Saskia
name: Huber, Laurentius
name: Kay, Kendrick
name: Poser, Benedikt A.
name: De Martino, Federico
name: Goebel, Rainer
name: Ivanov, Dimo
Publisher: name: figshare
Year: 2021
Subjects: Neuroscience

description: OHBM 2021 conference poster & video.
The video is a shortened version of my ISMRM 2021 conference contribution.The poster is done from scratch for OHBM conference.
Ballooning Instability in Polar Caps of Accreting Neutron Stars
Creators: name: Litwin, C.
name: Brown, Edward F.
name: Rosner, R.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We assess the stability of Kruskal-Schwarzschild (magnetic Rayleigh-Taylor) type modes for accreted matter on the surface of a neutron star confined by a strong (>= 1.E12 G) magnetic field. Employing the energy principle to analyze the stability of short-wavelength ballooning modes, we find that line-tying to the neutron star crust stabilizes these modes until the overpressure at the top of the neutron star crust exceeds the magnetic pressure by a factor ~ 8(a/h), where a and h are respectively the lateral extent of the accretion region and the density scale height. The most unstable modes are localized within a density scale height above the crust. We calculate the amount of mass that can be accumulated at the polar cap before the onset of instability.
description: 8 pages, 2 figures, accepted for publication by ApJ, uses AASTEX 5.0 and emulateapj5.sty (included)
Vertex cover with covering radius 2
Creators: name: Nguyen, Thinh D.
Publisher: name: figshare
Year: 2019
Subjects: subject: 10104 Combinatorics and Discrete Mathematics (excl. Physical Combinatorics)
subject: FOS: Mathematics

description: We define the notion of a vertex cover with radius 2 in an undirected graph. A proof showing that it is hard to decide if a given graph contains such a vertex cover of a given size, is given.