cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hematopoietic IKBKE limits the chronicity of inflammasome priming and metaflammation
Creators: name: Sethi, Jaswinder K.
Publisher: name: F1000Research
Year: 2015

description: Obesity increases the risk of developing life-threatening metabolic diseases including cardiovascular disease, fatty liver disease, diabetes, and cancer. Efforts to curb the global obesity epidemic and its impact have proven unsuccessful in part by a limited understanding of these chronic progressive diseases. It is clear that low-grade chronic inflammation, or metaflammation, underlies the pathogenesis of obesity-associated type 2 diabetes and atherosclerosis. However, the mechanisms that maintain chronicity and prevent inflammatory resolution are poorly understood. Here, we show that inhibitor of κB kinase epsilon (IKBKE) is a novel regulator that limits chronicity of inflammation during metabolic disease and atherosclerosis. The pathogenic relevance of IKBKE was indicated by the colocalization with macrophages in human and murine tissues and in atherosclerotic plaques. Genetic ablation of IKBKE resulted in enhanced and prolonged priming of the NLRP3 inflammasome in cultured macrophages, in hypertrophic adipose tissue, and in livers of hypercholesterolemic mice. This altered profile associated with enhanced acute phase response, deregulated cholesterol metabolism, and steatoheptatitis. Restoring IKBKE only in hematopoietic cells was sufficient to reverse elevated inflammasome priming and these metabolic features. In advanced atherosclerotic plaques, loss of IKBKE and hematopoietic cell restoration altered plaque composition. These studies reveal a new role for hematopoietic IKBKE: to limit inflammasome priming and metaflammation.
Duality Groups, Automorphic Forms and Higher Derivative Corrections
Creators: name: Lambert, Neil
name: West, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the higher derivative corrections that occur in type II superstring theories in ten dimensions or less. Assuming invariance under a discrete duality group G(Z) we show that the generic functions of the scalar fields that occur can be identified with automorphic forms. We then give a systematic method to construct automorphic forms from a given group G(Z) together with a chosen subgroup H and a linear representation of G(Z). This construction is based on the theory of non-linear realizations and we find that the automorphic forms contain the weights of G. We also carry out the dimensional reduction of the generic higher derivative corrections of the IIB theory to three dimensions and find that the weights of E_8 occur generalizing previous results of the authors on M-theory. Since the automorphic forms of this theory contain the weights of E_8 we can interpret the occurrence of weights in the dimensional reduction as evidence for an underlying U-duality symmetry.
description: Typos corrected and a reference added
Artist-driven layering and user's behaviour impact on recommendations in a playlist continuation scenario
Creators: name: Antenucci, Sebastiano
name: Boglio, Simone
name: Chioso, Emanuele
name: Dervishaj, Ervin
name: Kang, Shuwen
name: Scarlatti, Tommaso
name: Dacrema, Maurizio Ferrari
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper we provide an overview of the approach we used as team Creamy Fireflies for the ACM RecSys Challenge 2018. The competition, organized by Spotify, focuses on the problem of playlist continuation, that is suggesting which tracks the user may add to an existing playlist. The challenge addresses this issue in many use cases, from playlist cold start to playlists already composed by up to a hundred tracks. Our team proposes a solution based on a few well known models both content based and collaborative, whose predictions are aggregated via an ensembling step. Moreover by analyzing the underlying structure of the data, we propose a series of boosts to be applied on top of the final predictions and improve the recommendation quality. The proposed approach leverages well-known algorithms and is able to offer a high recommendation quality while requiring a limited amount of computational resources.
description: Source code available here: https://github.com/MaurizioFD/spotify-recsys-challenge
Ende einer Ära: Jyoti Basu, kommunistischer Ministerpräsident tritt zurück
Creators: name: Voll, Klaus
Publisher: name: Südasien
Year: 2024

description: Südasien, Bd. 20 Nr. 6-7 (2000): Sri Lanka nach den Wahlen - Rückkehr ins Paradies oder permanenter Kriegsschauplatz?
The South Park water transfers : the geography of resource expropriation in Colorado, 1859-1994
Creators: name: Kindquist, Cathy Elsa
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines the agricultural-to-municipal water transfer process and the transformation of South Park, a high intermontane basin located west of the Denver metropolitan area in the Rocky Mountains of Colorado. The formal appropriation and exchange of water in this area began in 1859 with the arrival of miners and the first diversions of water into sluice boxes. In the 1860s, ranchers claimed water on a more permanent and extensive basis, using it to irrigate bottomlands to produce hay and other fodder crops. This study discusses the evolution of ranching in South Park from the 1860s to the present, with special attention to the delicately balanced system that had to be worked out in such a harsh environment. More centrally, the thesis outlines the legal and administrative system that developed in the state of Colorado to govern the use and the exchange of water; and it focuses upon the South Park water transfers and the consequent retirement of ranch lands, from the 1890s to the 1990s. Without the critical components of water and productive haylands, year-round ranching could not exist in this marginal land. Beginning in the 1890s, the cities at the foot of the Colorado Front Range began to assess the water resources of the high basin and contemplate acquisitions of key water rights to supply the needs of the growing urban core. In the century that followed, water rights were sold voluntarily by South Park ranchers, by their heirs, and by speculators, to Denver, Colorado Springs, and later the suburban municipalities of Aurora and Thornton. The transfer of water to urban hands tipped the balance economically, ecologically, and politically. What was relinquished was not simply control of water, but also control the semi-arid region's most vital resource and control of the area of origin's future. This thesis addresses these issues through use of archival materials (largely government records) and through the use of maps, photographic materials, newspapers, diaries, and other historical sources. Interviews and field work were also conducted, and information is presented in visual, tabular, and written form. As economic development and population expansion in arid and semi-arid areas continue, pressure on water resources is increasing. More and more, cities are turning to agricultural water rights and rural communities to obtain their supplies. In this context, it is important to better understand the expropriation process, and that is precisely what this thesis seeks to do.
A prediction on the age of thick discs as a function of the stellar mass of the host galaxy
Creators: name: Comerón, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: One of the suggested thick disc formation mechanisms is that they were born quickly and in situ from a turbulent clumpy disc. Subsequently, thin discs formed slowly within them from leftovers of the turbulent phase and from material accreted through cold flows and minor mergers. In this letter, I propose an observational test to verify this hypothesis. By combining thick disc and total stellar masses of edge-on galaxies with galaxy stellar mass functions calculated in the redshift range of $z\leq3.0$, I derived a positive correlation between the age of the youngest stars in thick discs and the stellar mass of the host galaxy; galaxies with a present-day stellar mass of $\mathcal{M}_\star(z=0)<10^{10}\,\mathcal{M}_\odot$ have thick disc stars as young as $4-6\,{\rm Gyr}$, whereas the youngest stars in the thick discs of Milky-Way-like galaxies are $\sim10\,{\rm Gyr}$ old. I tested this prediction against the scarcely available thick disc age estimates, all of them are from galaxies with $\mathcal{M}_\star(z=0)\gtrsim10^{10}\,\mathcal{M}_\odot$, and I find that field spiral galaxies seem to follow the expectation. On the other hand, my derivation predicts ages that are too low for the thick discs in lenticular galaxies, indicating a fast early evolution for S0 galaxies. I propose the idea of conclusively testing whether thick discs formed quickly and in situ by obtaining the ages of thick discs in field galaxies with masses of $\mathcal{M}_\star(z=0)\sim10^{9.5}\,\mathcal{M}_\odot$ and by checking whether they contain $\sim5\,{\rm Gyr}$-old stars.
description: Letter accepted for publication in A&A
Probing episodic accretion with chemistry: CALYPSO observations of IRAM 04191+1522. Results from the CALYPSO IRAM-PdBI survey
Creators: name: Anderl, S.
name: Maret, S.
name: Cabrit, S.
name: Maury, A. J.
name: Belloche, A.
name: André, Ph.
name: Bacmann, A.
name: Codella, C.
name: Podio, L.
name: Gueth, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. The process of mass accretion in the earliest phases of star formation is still not fully understood: Does the accretion rate smoothly decline with the age of the protostar or are there short, intermittent accretion bursts? Aims. We aim to explore whether or not the observed C$^{18}$O and N$_2$H$^+$ emission pattern towards the VeLLO IRAM 04191+1522 can be understood in the framework of a scenario where the emission is chemically tracing a past accretion burst. Methods.We used high-angular-resolution Plateau de Bure Interferometer (PdBI) observations of C$^{18}$O and N$_2$H$^+$ towards IRAM 04191+1522 that were obtained as part of the CALYPSO IRAM Large Program. We model these observations using a chemical code with a time-dependent physical structure coupled with a radiative transfer module, where we allow for variations in the source luminosity. Results. We find that the N$_2$H$^+$ line emission shows a central hole, while the C$^{18}$O emission is compact. The morphology of these two lines cannot be reproduced with a constant luminosity model based on the present-day internal luminosity (0.08 L$_{sun}$). However, the N$_2$H$^+$ peaks are consistent with a constant-luminosity model of 12 L$_{sun}$. Using a model with time-dependent temperature and density profiles, we show that the observed N$_2$H$^+$ peak emission could indeed be caused by a past accretion burst. Such a burst should have occurred a couple of hundred years ago. Conclusions. We suggest that an accretion burst occurred in IRAM 04191+1522 in the recent past. If such bursts are common and sufficiently long in VeLLOs, they could lead to higher accretion onto the central object than their luminosity suggests. For IRAM 04191 in particular, our results yield an estimated final mass of 0.2 - 0.25 M$_{sun}$ by the end of the Class 0 phase, which would make this object a low-mass star rather than a brown dwarf.
description: 13 pages, 12 figures, Accepted for publication in A&A, (this version with corrected list of authors in metadata)
Narrow-line AGN in the ISO-2MASS Survey
Creators: name: Leipski, C.
name: Haas, M.
name: Meusinger, H.
name: Siebenmorgen, R.
name: Chini, R.
name: Drass, H.
name: Albrecht, M.
name: Wilkes, B. J.
name: Huchra, J. P.
name: Ott, S.
name: Cesarsky, C.
name: Cutri, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: A long-standing challenge of observational AGN research is to find type 2 quasars, the luminous analogues of Seyfert-2 galaxies. Aims: We search for luminous narrow-line type 2 AGN, characterise their properties, and compare them with broad-line type 1 AGN. Methods: Combining the ISOCAM parallel survey at 6.7 mu with 2MASS, we have selected AGN via near-mid-infrared colours caused by the hot nuclear dust emission. We performed spectroscopy in the optical and, for a subset of the sample, also in the mid-infrared with Spitzer. Results: We find nine type 2 AGN at redshift 0.10.5 we did not find type 2 AGN, probably because the hottest dust emission, still covered by the NIR filters, is obscured. The optical spectra of the type 2 host galaxies show young and old stellar populations. Only one object is an ultraluminous infrared galaxy with starburst. The 5-38 mu spectra of the two type 2 sources observed show a strong continuum with PAH emission in one case and silicate absorption in the other case. Conclusions: The near-mid-infrared selection is a successful strategy to find luminous type 2 AGN at low z. The objects exhibit a large range of properties so that it is difficult to infer details by means of popular SED fitting with simple average templates.
description: Accepted for publication in A&A
Comparing Multi-Walled Carbon Nanotubes and Halloysite Nanotubes as Reinforcements in EVA Nanocomposites
Creators: name: Zubkiewicz, Agata
name: Szymczyk, Anna
name: Franciszczak, Piotr
name: Kochmanska, Agnieszka
name: Janowska, Izabela
name: Paszkiewicz, Sandra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The influence of carbon multi-walled nanotubes (MWCNTs) and halloysite nanotubes (HNTs) on the physical, thermal, mechanical, and electrical properties of EVA (ethylene vinyl acetate) copolymer was investigated. EVA-based nanocomposites containing MWCNTs or HNTs, as well as hybrid nanocomposites containing both nanofillers were prepared by melt blending. Scanning electron microcopy (SEM) images revealed the presence of good dispersion of both kinds of nanotubes throughout the EVA matrix. The incorporation of nanotubes into the EVA copolymer matrix did not significantly affect the crystallization behavior of the polymer. The tensile strength of EVA-based nanocomposites increased along with the increasing CNTs (carbon nanotubes) content (increased up to approximately 40% at the loading of 8 wt.%). In turn, HNTs increased to a great extent the strain at break. Mechanical cyclic tensile tests demonstrated that nanocomposites with hybrid reinforcement exhibit interesting strengthening behavior. The synergistic effect of hybrid nanofillers on the modulus at 100% and 200% elongation was visible. Moreover, along with the increase of MWCNTs content in EVA/CNTs nanocomposites, an enhancement in electrical conductivity was observed.
On the structure of general solution to the equations of shear-free null congruences
Creators: name: Kassandrov, Vladimir V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We demonstrate that the source of a shear-free null congruence is, generically, a world sheet of a singular string in the complex Minkowski space. In particular cases the string degenerates into the Newman's point singularity. We describe also a time-dependent deformation of the Kerr's congruence which could indicate the unstability of the Kerr (Kerr-Newman) (electro)vacuum solution. Then we consider a 5D extension of Minkowski space obtained by complexification of the time coordinate. Singular locus of a shear-free null congruence on such an extended space-time consists of a (great) number of point particles (``markeons'') and 2D surfaces -- light-like wave fronts.
description: 5 pages, LaTeX
O'QUV MATNLARINI MA'NO JIHATIDAN TARKIBIY  TAHLILI
Creators: name: Hamrayeva Muhayyo Erkin qizi, QDU Pedagogika fanlar doktori professor R.D.Shodiyev Qarshi davlat universiteti tayanch doktaranti
Publisher: name: Zenodo
Year: 2024

description: Ushbu  maqola  o’quv  matnlarini  ma’no  jihatidan  tarkibiy tahlil  etish  orqali  ta’lim  oluvchi  uning  mazmunini  anglab  tushunishi  qanchalik sodda  hamda  yengilligi  o’rganiladi.  Matnli  sub’ekt  va  uning  predikati  orasida mazmun kengligi jihatdan turli xil munosabatlar ochib beriladi.
Über die Langlebigkeit von ethnischen Konflikten und die Ontologisierung von Gewalt
Creators: name: Heidemann, Frank
Publisher: name: Südasien
Year: 2024

description: Südasien, Bd. 20 Nr. 6-7 (2000): Sri Lanka nach den Wahlen - Rückkehr ins Paradies oder permanenter Kriegsschauplatz?
Representations and Properties of Generalized $A_r$ Statistics
Creators: name: Daoud, Mohammed
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A generalization of $A_r$ statistics is proposed and developed. The generalized $A_r$ quantum statistics is completely specified by a set of Jacobson generators satisfying a set of triple algebraic relations. Fock-Hilbert representations and Bargmann-Fock realizations are derived.
description: 12 pages, to appear in IJMPA (2006)
Photolysis production and spectroscopic investigation of the highest vibrational states in H$_2$ (X$^1Σ_g^+$ $v=13,14$)
Creators: name: Lai, K. -F.
name: Beyer, M.
name: Salumbides, E. J.
name: Ubachs, W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Rovibrational quantum states in the $X^1Σ_g^+$ electronic ground state of H$_2$ are prepared in the $v=13$ vibrational level up to its highest bound rotational level $J=7$, and in the highest bound vibrational level $v=14$ (for $J=1$) by two-photon photolysis of H$_2$S. These states are laser-excited in a subsequent two-photon scheme into $F^1Σ_g^+$ outer well states, where the assignment of the highest ($v,J$) states is derived from a comparison of experimentally known levels in \F, combined with \emph{ab initio} calculations of \X\ levels. The assignments are further verified by excitation of $F^1Σ_g^+$ population into autoionizing continuum resonances which are compared with multi-channel quantum defect calculations. Precision spectroscopic measurements of the $F-X$ intervals form a test for the \emph{ab initio} calculations of ground state levels at high vibrational quantum numbers and large internuclear separations, for which agreement is found.
Improving a radiative plus collisional energy loss model for application to RHIC and LHC
Creators: name: Wicks, Simon
name: Gyulassy, Miklos
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With the QGP opacity computed perturbatively and with the global entropy constraints imposed by the observed dNch/dy~1000, radiative energy loss alone cannot account for the observed suppression of single non-photonic electrons. Collisional energy loss is comparable in magnitude to radiative loss for both light and heavy jets. Two aspects that significantly affect the collisional energy loss are examined: the role of fluctuations, and the effect of introducing a running QCD coupling as opposed to the fixed alpha_s=0.3 used previously.
description: Prepared for 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions: Quark Matter 2006 (QM2006), Shanghai, China, 14-20 Nov 2006
Discordant synchronization patterns on directed networks of identical phase oscillators with attractive and repulsive couplings
Creators: name: Peron, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the collective dynamics of identical phase oscillators on globally coupled networks whose interactions are asymmetric and mediated by positive and negative couplings. We split the set of oscillators into two interconnected subpopulations. In this setup, oscillators belonging to the same group interact via symmetric couplings while the interaction between subpopulations occurs in an asymmetric fashion. By employing the dimensional reduction scheme of the Ott-Antonsen (OA) theory, we verify the existence of traveling-wave and $π$-states, in addition to the classical fully synchronized and incoherent states. Bistability between all collective states is reported. Analytical results are generally in excellent agreement with simulations; for some parameters and initial conditions, however, we numerically detect chimera-like states which are not captured by the OA theory.
description: 13 pages, 8 figures
European study of risk factors for severe disease among hospitalised COVID-19 patients: I-MOVE-COVID-19 protocol
Creators: name: Rose, Angela MC
name: Kissling, Esther
name: Valenciano, Marta
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19
Risk factors
I-MOVE-COVID-19
Hospital

description: This document presents the core I-MOVE-COVID-19 European protocol for the hospital-based study of potential risk and protective factors for severe COVID-19 in hospitalised COVID-19 patients, outlining the agreed methods for collecting COVID-19 and SARS-CoV-2 in each of the individual studies, and including a plan for the pooled analysis.
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 101003673
A matter of time: publication dates in Web of Science Core Collection
Creators: name: Liu, Weishu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Web of Science Core Collection, one of the most authoritative bibliographic databases, is widely used in academia to track high-quality research. This database has begun to index online-first articles since December 2017. This new practice has introduced two different publication dates (online and final publication dates) into the database for more and more early access publications. It may confuse many users who want to search or analyze literature by using the publication-year related tools provided by Web of Science Core Collection. By developing custom retrieval strategies and checking manually, this study finds that the "year published" field in search page searches in both online and final publication date fields of indexed records. Each indexed record is allocated to only one "publication year" on the left of the search results page which will inherit first from online publication date field even when the online publication date is later than the final publication date. The "publication year" field in the results analysis page and the timespan "custom year range" field in the search page have the same function as that of the filter "publication year" in search results page. The potential impact of the availability of two different publication dates in calculating bibliometric indicators is also discussed at the end of the article.
description: forthcoming in Scientometrics
Role of cGMP-dependent protein kinase in smooth muscle relaxation
Creators: name: Patel, Ashwinkumar Ishverbhai
Publisher: name: University of British Columbia
Year: 2009

description: Elevations in cyclic guanosine 3'-5'-monophosphate (cGMP) and activation of cGMP-dependent protein kinase (PKG) are believed to be responsible for nitrovasodilator-induced relaxation of vascular smooth muscle (VSM). In contrast to VSM, in tissues such as rat vas deferens and rat distal colon (non-VSM), cGMP elevation is not associated with relaxation. The hypotheses tested in this thesis were that (1) in VSM, cGMP elevation and PKG activation are correlated with relaxation, and (2) in non-VSM, the lack of correlation between cGMP elevation and relaxation is due to (a) lack of PKG activation and/or (b) low levels of PKG. Studies were carried out to optimize the assay conditions used to measure PKG activity. When PKG and cAMP-dependent protein kinase (PKA) were resolved by MonoQ anion exchange chromatography it was found that the assay conditions were specific for PKG since this activity was not found where Type I PKA activity was found. Furthermore immunoblotting with PKG antibodies showed that immunoreactive blots were only seen in those fractions which exhibited PKG activity. Concentration-dependent studies with sodium nitroprusside (SNP) and nitroglycerin (GTN), demonstrated a good correlation between elevation of cGMP levels, activation of PKG and relaxation in rabbit aorta. In temporal studies, PKG was activated at the earliest time point studied at which the preparations were known to be relaxed by SNP and GTN.In rat vas deferens, 0.1 mM SNP elevated cGMP levels and significantly increased PKG activity ratios but no inhibition of contraction took place. A higher concentration of SNP (5.0 mM), resulted in a more marked increase in PKG activity ratio (3-fold compared to control) but despite this increase the phenylephrineinduced contraction was not inhibited. Similarly, in the rat distal colon, atrial natriuretic factor (ANF) significantly increased cGMP levels and activated PKG but did not inhibit spontaneous contractions. Another possible reason why, despite activation of PKG, there is no inhibition in distal colon might be due to low total levels of PKG in this tissue compared to rabbit aorta. Total PKG levels in both proximal and distal colon were lower than those in the rabbit aorta and yet, when PKG was activated in these tissues by ANF, the contractions in proximal, but not in the distal colon, were inhibited. Taken together, these data suggest that the ability of some, but not all, smooth muscles to relax in response to cGMP-elevating agents cannot be explained solely on the basis of differences in total PKG activity in the muscles. It is possible that the lack of relaxation in response to PKG activation in muscles such as the rat vas deferens and distal colon may be due to (1) a lack of co-localization of PKG with a substrate, or (2) lack of critical protein substrates downstream from PKG activation.
Nonlocal Dirac Equation for Accelerated Observers
Creators: name: Mashhoon, Bahram
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The nonlocal theory of accelerated systems is extended to the propagation of Dirac particles. The implications of nonlocality for the phenomenon of spin-rotation coupling are discussed. The Lorentz-invariant nonlocal Dirac equation is presented for certain special classes of accelerated observers.
description: 17 pages, slightly expanded version accepted for publication in Physical Review A
Neutrino Properties, Cosmology
Creators: name: Henley, E. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Review of neutrino properties; double beta decay; very high energy neutrinos; leptogenesis
description: 10 pages, 3 figures; conference talk
A method-of-lines formulation for a model of reactive settling in tanks with varying cross-sectional area
Creators: name: Bürger, Raimund
name: Careaga, Julio
name: Diehl, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M06, 35K57, 35Q35

description: Reactive settling denotes the process of sedimentation of small solid particles dispersed in a viscous fluid with simultaneous reactions between the components that constitute the solid and liquid phases. This process is of particular importance for the simulation and control of secondary settling tanks (SSTs) in water resource recovery facilities (WRRFs), formerly known as wastewater treatment plants. A spatially one-dimensional model of reactive settling in an SST is formulated by combining a mechanistic model of sedimentation with compression with a model of biokinetic reactions. In addition, the cross-sectional area of the tank is allowed to vary as a function of height. The final model is a system of strongly degenerate parabolic, nonlinear partial differential equations (PDEs)that include discontinuous coefficients to describe the feed, underflow and overflow mechanisms, as well as singular source terms that model the feed mechanism. A finite difference scheme for the final model is derived by first deriving a method-of-lines formulation (discrete in space, continuous in time), and then passing to a fully discrete scheme by a time discretization. The advantage of this formulation is its compatibility with common practice in development of software for WRRFs. The main mathematical result is an invariant-region property, which implies that physically relevant numerical solutions are produced. Simulations of denitrification in SSTs in wastewater treatment illustrate the model and its discretization.
General theory of quantum fingerprinting network
Creators: name: Qin, Ji-Qian
name: Wang, Jing-Tao
name: Yu, Yun-Long
name: Wang, Xiang-Bin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The purpose of fingerprinting is to compare long messages with low communication complexity. Compared with its classical version, the quantum fingerprinting can realize exponential reduction in communication complexity. Recently, the multi-party quantum fingerprinting is studied on whether the messages from many parties are the same. However, sometimes it is not enough just to know whether these messages are the same, we usually need to know the relationship among them. We provide a general model of quantum fingerprinting network, defining the relationship function $f^R$ and giving the corresponding decision rules. In this work, we take the four-party quantum fingerprinting protocol as an example for detailed analysis. We also choose the optimal parameters to minimize communication complexity in the case of asymmetric channels. Furthermore, we compare the multi-party quantum fingerprinting with the protocol based on the two-party quantum fingerprinting and find that the multi-party protocol has obvious advantages, especially in terms of communication time. Finally, the method of encoding more than one bit on each coherent state is used to further improve the performance of the protocol.
description: 12 pages, 4 figures
Differential Evolution of the UV Luminosity Function of Lyman Break Galaxies from z~5 to 3
Creators: name: Iwata, I.
name: Ohta, K.
name: Tamura, N.
name: Akiyama, M.
name: Aoki, K.
name: Ando, M.
name: Kiuchi, G.
name: Sawicki, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) We report the UV luminosity function (LF) of Lyman break galaxies at z~5 derived from a deep and wide survey using the Subaru/Suprime-Cam. Target fields consist of two blank regions of the sky (the HDF-N and J0053+1234), and the total effective surveyed area is 1290 sqarcmin. Applications of carefully determined colour selection criteria in V-I and I-z' yield a detection of 853 candidates with z'AB<26.5 mag. The derived UVLF at z~5 shows no significant change in the number density of bright (L>=L*_z=3) LBGs from that at z~3, while there is a significant decline in the LF's faint end with increasing lookback time. This result means that the evolution of the number densities is differential with UV luminosity: the number density of UV luminous objects remains almost constant from z~5 to 3 while the number density of fainter objects gradually increases with cosmic time. This trend becomes apparent thanks to the small uncertainties in number densities both in the bright and faint parts of LFs at different epochs that are made possible by the deep and wide surveys. We discuss the origins of this differential evolution and suggest that our observational findings are consistent with the biased galaxy evolution scenario: a galaxy population hosted by massive dark haloes starts active star formation preferentially at early cosmic time, while less massive galaxies increase their number density later. We also calculated the UV luminosity density by integrating the UVLF and at z~5 found it to be 38.8% of that at z~3 for the luminosity range L>0.1 L^*_z=3. By combining our results with those from the literature, we find that the cosmic UV luminosity density marks its peak at z=2-3 and then slowly declines toward higher redshift.
description: 26 pages, 15 figures. Accepted for publication in MNRAS. PDF also available at http://www.oao.nao.ac.jp/support/staff/iwata/publ/papers.html
Dissipation control in cavity QED with oscillating mode-structures
Creators: name: Linington, I. E.
name: Garraway, B. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate how a time-dependent dissipative environment may be used as a tool for controlling the quantum state of a two-level atom. In our model system the frequency and coupling strength associated with microscopic reservoir modes are modulated, while the principal features of the reservoir structure remain fixed in time. Physically, this may be achieved by containing a static atom-cavity system inside an oscillating external bath. We show that it is possible to dynamically decouple the atom from its environment, despite the fact that the two remain resonant at all times. This can lead to Markovian dynamics, even for a strong atom-bath coupling, as the atomic decay becomes inhibited into all but a few channels; the reservoir occupation spectrum consequently acquires a sideband structure, with peaks separated by the frequency of the environmental modulation. The reduction in the rate of spontaneous emission using this approach can be significantly greater than could be achieved with an oscillatory atom-bath detuning using the same parameters.
description: v1: 11 pages, 7 figures. v2: Journal-ref added. Minor typographical changes and two references added
Polyvinyl Alcohol-Few Layer Graphene Composite Films Prepared from Aqueous Colloids. Investigations of Mechanical, Conductive and Gas Barrier Properties
Creators: name: Van der Schueren, Benoit
name: Marouazi, Hamza El
name: Mohanty, Anurag
name: Lévêque, Patrick
name: Sutter, Christophe
name: Romero, Thierry
name: Janowska, Izabela
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quasi all water soluble composites use graphene oxide (GO) or reduced graphene oxide (rGO) as graphene based additives despite the long and harsh conditions required for their preparation. Herein, polyvinyl alcohol (PVA) films containing few layer graphene (FLG) are prepared by the co-mixing of aqueous colloids and casting, where the FLG colloid is first obtained via an effcient, rapid, simple, and bio-compatible exfoliation method providing access to relatively large FLG flakes. The enhanced mechanical, electrical conductivity, and O2 barrier properties of the films are investigated and discussed together with the structure of the films. In four different series of the composites, the best Young modulus is measured for the films containing around 1% of FLG. The most significant enhancement is obtained for the series with the largest FLG sheets contrary to the elongation at break which is well improved for the series with the lowest FLG sheets. Relatively high one-side electrical conductivity and low percolation threshold are achieved when compared to GO(rGO) composites (almost 10-3 S.cm-1 for 3% of FLG and transport at 0.5% FLG), while the conductivity is affected by the formation of a macroscopic branched FLG network. The composites demonstrate a reduction of O2 transmission rate up to 60%.
Ambonoides retinoides OPITZ 2015, nov. sp.
Creators: name: Opitz, Weston
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Lycidae
Ambonoides
Ambonoides retinoides

description: Ambonoides retinoides OPITZ nov. sp.
(Figs 1-15, 62, 87-92, 109, 110, 143-145, 175)
Holotype: ♂. Nova Teutonia, SC, Brasil, XI.1966, F. Plaumann (FSCA).
Paratypes: Four specimens. Brazil: Santa Catarina: 29-XI-1940, 27°11' La., 52°23' Lo, Fritz Plaumann (AMNH, 2); Rio Grande do Sul, Porto Alegre, 4-XI-1953, Pe. Buck (WOPC, 1). Uruguay: Approx. 6 km SE Melo, Dept. Cerro Largo, 25-27-II-1963, John K. Bouseman (WOPC, 1).
Diagnosis: The members of this species resemble superficially those of Ambonoides caraguata. However, in specimens of A. retinoides the legs are entirely black, whereas in A. caraguata specimens the femora are partially flavotestaceous.
Description: Size: Length 8.5 mm; width 2.8 mm. Form: As in Fig. 145. Color: Cranium mostly black, lower frons and clypeus flavotestaceous; pronotum mostly black, upper sides, anterior margin, and small anterior wedged-shaped macula flavotestaceous; elytral disc mostly black, with midelytral testaceous fascia. Head: Antennal capitulum very long (Figs. 62, 90), each capitular antennomeres as long as combined length funicular antennomeres; antennal carina very prominent; EW/FW 12/16. Thorax: Pronotal anterior margin not projected at middle, sides of disc depressed; side margin of disc rounded (Fig. 6); PW/PL 45/45; elytra subrectangulate, sides sharply deflexed; EL/EW 210/43. Abdomen: Male pygidium incised at distal margin; aedeagus as in Figs. 109, 110. Female mesodermal reproductive organs (Fig. 143): Spermathecal capsule slightly sclerotized; spermathecal gland attached to apex of capsule; bursa copulatrix saccular; bursal sclerite present (Fig. 144).
Natural history: Specimens were collected during May and November.
Variation: Size: Length 8.0-8.5 mm; width 2.0-2.8 mm. The elytra may be entirely flavotestaceous, or flavotestaceous in basal half and black in remainder.
Distribution (Fig. 175): This species is known from Uruguay and southeastern Brazil.
Etymology: The trivial name retinoides is a compound Latin name derived from rete (= net) and the suffix – oides (= likeness). I refer to the network-like property of the surface of the elytral disc.
description: Published as part of Opitz, Weston, 2015, Systematics of the checkered beetle subfamily Platynopterinae SPINOLA (Coleoptera Cleridae), pp. 1513-1572 in Linzer biologische Beiträge 47 (2) on pages 1523-1524, DOI: 10.5281/zenodo.5282503
Representations and Properties of Generalized $A_r$ Statistics, Coherent States and Robertson Uncertainty Relations
Creators: name: Daoud, Mohammed
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The generalization of $A_r$ statistics, including bosonic and fermionic sectors, is performed by means of the so-called Jacobson generators. The corresponding Fock spaces are constructed. The Bargmann representations are also considered. For the bosonic $A_r$ statistics, two inequivalent Bargmann realizations are developed. The first (resp. second) realization induces, in a natural way, coherent states recognized as Gazeau-Klauder (resp. Klauder-Perelomov) ones. In the fermionic case, the Bargamnn realization leads to the Klauder-Perelomov coherent states. For each considered realization, the inner product of two analytic functions is defined in respect to a measure explicitly computed. The Jacobson generators are realized as differential operators. It is shown that the obtained coherent states minimize the Robertson-Schrödinger uncertainty relation.
description: 16 pages, published in JPA
Ambonoides caraguata OPITZ 2015, nov. sp.
Creators: name: Opitz, Weston
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Lycidae
Ambonoides
Ambonoides caraguata

description: Ambonoides caraguata OPITZ nov. sp.
(Figs 63, 111, 112, 146, 175)
Holotype: ♀. Rio Caraguatá, M. Grosso, Brasil, XII:8: 1953, 21°48'; 52°27', 400 m, F. Plaumann (FMNH).
Paratypes: Two specimens. Brazil, Rio Caraguatá: 17-VIII-1953, 21°48' 52°27', Fritz Plaumann (FMNH, 1); idem, 31-VIII-1953, 21°48' 52°27', F. Plaumann (WOPC, 1).
Diagnosis: The members of this species resemble superficially those of Ambonoides retinoides. However, in A. caraguata specimens the legs are bicolored, whereas in specimens of retinoides the legs are entirely black.
Description: Size: Length 7.0 mm; width 2.0 mm. Form: As in Fig. 146. Color: Cranium mostly black, lower frons and clypeus flavotestaceous; pronotum mostly black, upper sides, anterior margin, and small anterior wedged-shaped macula flavotestaceous; elytral disc mostly black, with midelytral flavotestaceous fascia, humeral angle faintly testaceous. Head: Antennal capitulum very long (Fig. 63), each capitular antennomeres nearly as long as combined length funicular antennomeres; antennal carina very prominent; EW/FW 10/15. Thorax: Pronotal anterior margin not projected at middle, sides of disc depressed; side margin of disc rounded; PW/PL 38/38; elytra rectangular, sides sharply deflexed; EL/EW 165/33. Abdomen: Male pygidium not incised at distal margin; aedeagus as in Figs. 111, 112, tegminal lobes acuminate, phallic apex particularly elongate.
Natural history: Specimens were collected during August.
Variation: Size: length 6.0-7.0 mm; width 1.5-2.0 mm. The elytra may be entirely black, or flavotestaceous in elytral basal half and black in remainder.
Distribution (Fig. 175): This species is known only from the type locality.
Etymology: The trivial name, caraguata, constitutes a noun in apposition and refers to the type locality.
description: Published as part of Opitz, Weston, 2015, Systematics of the checkered beetle subfamily Platynopterinae SPINOLA (Coleoptera Cleridae), pp. 1513-1572 in Linzer biologische Beiträge 47 (2) on page 1524, DOI: 10.5281/zenodo.5282503
A gigabit transceiver for the ATLAS inner tracker pixel detector readout upgrade
Creators: name: Chen, C.
name: Wallangen, V.
name: Gong, D.
name: Grace, C.
name: Sun, Q.
name: Guo, D.
name: Huang, G.
name: Kulis, S.
name: Leroux, P.
name: Liu, C.
name: Liu, T.
name: Moreira, P.
name: Prinzie, J.
name: Xiao, L.
name: Ye, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: This paper presents the design and simulation results of a gigabit transceiver Application Specific Integrated Circuit (ASIC) called GBCR for the ATLAS Inner Tracker (ITk) Pixel detector readout upgrade. GBCR has four upstream receiver channels and a downstream transmitter channel. Each upstream channel operates at 5.12 Gbps, while the downstream channel operates at 2.56 Gbps. In each upstream channel, GBCR equalizes a signal received through a 5-meter 34-American Wire Gauge (AWG) twin-axial cable, retimes the data with a recovered clock, and drives an optical transmitter. In the downstream channel, GBCR receives the data from an optical receiver and drives the same type of cable as the upstream channels. The output jitter of an upstream channel is 26.5 ps and the jitter of the downstream channel after the cable is 33.5 ps. Each upstream channel consumes 78 mW and each downstream channel consumes 27 mW. Simulation results of the upstream test channel suggest that a significant jitter reduction could be achieved with minimally increased power consumption by using a Feed Forward Equalizer (FFE) + Decision Feedback Equalization (DFE) in addition to the linear equalization of the baseline channel. GBCR is designed in a 65-nm CMOS technology.
description: 7 pages, 7 figures
The role for insulin-like growth factor-I in preimplantation embryonic development and decidualization following superovulation in the rat
Creators: name: Katagiri, Seiji
Publisher: name: University of British Columbia
Year: 2009

description: Superovulation causes detrimental effects, including embryonic loss and implantation failure. This study determined potential roles for insulin-like growth factor (IGF-I) in uterine environment regulation and preimplantation development, in conjunction with the detrimental effects of superovulation in the rat. IGF-I may be beneficial to preimplantation embryonic development. IGF-I stimulated embryonic development and metabolism in vitro and increased the rate of implantation and fetal development when the blastocysts were transferred into a receptive uterus. However, IGF-I may be involved in embryonic loss following superovulation, by perturbing the uterine environment. Superovulation enhanced uterine IGF-I action from day 1 to 3 of pregnancy and reduced its action on days 5 and 6. Uterine luminal fluid from the uterus exposed to increased IGF-I action from day 1 to 3 was detrimental to embryonic development. This uterine luminal fluid had altered electrolyte composition that is similar to that observed following superovulation. Anti-IGF-I antibody restored superovulationinduced alterations in cations, suggesting that IGF-I may partially mediate this effect of superovulation. Superovulation-induced alterations in IGF-I action may adversely affect decidualization, a critical step in implantation. High IGF-I levels from day 1 to 3 and low levels from day 3 to 5, inhibited deciduoma formation. Alterations in IGF-I action after day 5 had no effect, suggesting a role for IGF-I in uterine sensitization. The role of IGF-I in decidualization may be complex. IGF-I cannot be substituted for growth hormone (GH) and thyroxine (T4) during decidualization, but altered deciduoma formation and alkaline phosphatase (ALP) activity in the GH and T4-dependent manner. IGF-I either stimulated or inhibited deciduoma formation and ALP activity, depending upon concentration and treatment period. IGF-I stimulated basal ALP activity but inhibited prostaglandin E2-stimulated ALP activity in the endometrial stroma cells. In conclusion, IGF-I may play an important role in the maintenance of a receptive uterine environment for embryonic development and the regulation of decidualization. Embryonic loss and failure of implantation following superovulation may be partially attributed to disturbances in uterine IGF-I action as observed in this study.