cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Did WMAP see Moving Local Structures?
Creators: name: Cooray, Asantha
name: Seto, Naoki
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The divergence of the momentum density field of the large scale structure generates a secondary anisotropy contribution to the Cosmic Microwave Background (CMB). While the effect is best described as a non-linear extension to the well-known integrated Sachs-Wolfe effect, due to mathematical coincidences, the anisotropy contribution is also described as the lensing of the dipole seen in the rest-frame of a moving mass. Given the closeness, there is a remote possibility that local concentrations of mass in the form of the Great Attractor and the Shapley concentration generate large angular scale fluctuations in CMB and could potentially be responsible, at least partly, for some of the low-multipole anomalies in WMAP data. While the local anisotropy contribution peaks at low multipoles, for reasonable models of the mass and velocity distributions associated with local super structures we find that the amplitude of temperature anisotropies is at most at a level of 10$^{-2}$ $μ$K and is substantially smaller than primordial fluctuations. It is extremely unlikely that the momentum density of local mass concentrations is responsible for any of the large angular scale anomalies in WMAP data.
description: 10 pages, 6 figures, use PDF file to print out
Imaging orbital ferromagnetism in a moiré Chern insulator
Creators: name: Tschirhart, C. L.
name: Serlin, M.
name: Polshyn, H.
name: Shragai, A.
name: Xia, Z.
name: Zhu, J.
name: Zhang, Y.
name: Watanabe, K.
name: Taniguchi, T.
name: Huber, M. E.
name: Young, A. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Electrons in moiré flat band systems can spontaneously break time reversal symmetry, giving rise to a quantized anomalous Hall effect. Here we use a superconducting quantum interference device to image stray magnetic fields in one such system composed of twisted bilayer graphene aligned to hexagonal boron nitride. We find a magnetization of several Bohr magnetons per charge carrier, demonstrating that the magnetism is primarily orbital in nature. Our measurements reveal a large change in the magnetization as the chemical potential is swept across the quantum anomalous Hall gap consistent with the expected contribution of chiral edge states to the magnetization of an orbital Chern insulator. Mapping the spatial evolution of field-driven magnetic reversal, we find a series of reproducible micron scale domains whose boundaries host chiral edge states.
2-Propyl-1H-imidazole-4,5-dicarboxylate acid supported cu/ni/fe/co complexes: synthesis, biological and catalytic evaluation
Creators: name: Kawad, Mukesh
name: Sangani, Sagar R.
name: Parmar, Jigneshkumar
name: Dabhi, Ranjitsinh C.
name: Chauhan, Rishita
name: Ahmed, Sarfaraz
name: Ameta, Rakesh Kumar
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biophysics
Biochemistry
Medicine
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: Herein, we report 2-propyl-1H-imidazole-4,5-dicarboxylate complexes of Cu/Co/Fe/Ni metal ions. The complexes have been characterized using powder X-ray diffraction, FTIR, and mass spectrometry. Thermal gravimetric analysis (TGA) established their thermal stability, enduring temperatures of up to 650 °C. The interaction of Bovine Serum Albumin (BSA) and DNA with these complexes was examined, revealing a significant binding affinity up to 70%. Fluorescence quenching experiments also showed the binding of complexes with biomolecules. These interactions were substantiated by molecular docking studies against the proteins 3v03 (BSA) and 1d28 (DNA), shedding light on the essential interactions driving their potential medicinal activity. The Cu complex displayed a notably high GSC score and a substantial area as determined through the Patch Dock server. Free radical interaction with 2,2-diphenylpicrylhydrazyl (DPPH) shows their antioxidant activity where Cu and Fe complexes expressed greater activity as compared to others. The catalytic properties of the compounds were assessed using p-nitrophenol (PNP) where the complexes exhibited reducing activity, leading to a conversion of over 90% of PNP into p-aminophenol. Analysis revealed a pseudo-second-order model closely aligned with experimental values, indicating second-order reduction kinetics.
Delta-33 medium mass modification and pion spectra
Creators: name: Pin-zhen, Bi
name: Rafelski, Johann
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study the pi+- spectra obtained in 2,4,6,8 A GeV Au-Au collisions within the thermal model. We find that the main features of the data can be well described after we include the pions from the decay of the Delta-resonance with medium mass modification.
description: 6 pages incl. 2 figs and 2 tables, final version in press in the EPJ-A (Hadrons and Nuclei). TITLE slightly changed
Nonpoint Source Pollution Taxes and Excessive Tax Burden
Creators: name: Karp, Larry S.
name: Karp, Larry S.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Environmental Economics and Policy
subject: ambient tax
subject: nonpoint source pollution
subject: moral hazard
subject: asymmetric information
subject: differential games

description: If a regulator is unable to measure firms' individual emissions, an ambient tax can be used to achieve the socially desired level of pollution. With this tax, each firm pays a unit tax on aggregate emissions. In order for the tax to be effective, firms must recognize that their decisions affect aggregate emissions. When firms behave strategically with respect to the tax-setting regulator, under plausible circumstances their tax burden is lower under an ambient tax, relative to the tax which charges firms on the basis of individual emissions. Firms may prefer the case where the regulator is unable to observe individual firm emissions, even if this asymmetric information causes the regulator to tax each firm on the basis of aggregate emissions.
Additional file 5 of Chronological set of E. coli O157:H7 bovine strains establishes a role for repeat sequences and mobile genetic elements in genome diversification
Creators: name: Stanton, Eliot
name: Wahlig, Taylor A.
name: Dongjin Park
name: Kaspar, Charles W.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Table S2. Location and length of inverted repeats in Φ804–7 and Φ804–15. Crossover region highlighted in light orange.
Searching for modified gravity in the astrophysical gravitational wave background: Application to ground-based interferometers
Creators: name: Nunes, Rafael C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate how the propagation of an astrophysical gravitational wave background (AGWB) is modified over cosmological volumes when considering theories beyond general relativity of the type Horndeski gravity. We first deduce an amplitude correction on the AGWB induced for the presence of a possible running in the Planck mass. Then, we apply the spectral noise density from some ground-based interferometers, namely, the Advanced LIGO (aLIGO), Einstein Telescope (ET) and Cosmic Explore (CE), to evaluate the signal-to-noise ratio (SNR) as a function of the amplitude of the running of the Planck mass for two different scenarios. We find that for observation time period $\gtrsim$ 5 yrs and $\gtrsim$ 1 yr, we can have a significant signal of the AGWB in the band [1-100] Hz from the ET and CE sensitivity, respectively. Using Fisher information, we find some forecast bounds, and we deduce $\lesssim$ 27\% and $\lesssim$ 18\% correction at 1$σ$ confidence level on the amplitude of the running of the Planck mass from ET and CE, respectively. It is clear that a detection of a AGWB in future can open a new window to probe the nature of gravity with good accuracy.
description: 9 pages, 5 captioned Figures. Accepted for publication in PRD
The Temporal Resolution of Uncertainty and the Irreversibility Effect
Creators: name: Narain, Urvashi
name: Hanemann, W. Michael
name: Fisher, Anthony C.
name: Narain, Urvashi
name: Hanemann, W. Michael
name: Fisher, Anthony C.
Publisher: name: Unknown
Year: 2004
Subjects: Risk and Uncertainty

description: We define the irreversibility effect and demonstrate its importance in problems involving investment decisions under uncertainty. We establish several analytical and numerical results that suggest both that the effect holds more widely than generally recognized, and that an existing result (Epstein's Theorem) giving a sufficient condition for determining whether the effect holds can be applied more widely than previously indicated, in particular to problems involving intertemporally nonseparable benefit functions. We further show that a low elasticity of intertemporal substitution will however result in failure of the effect, but that the effect will hold if the value of information increases in the degree of flexibility.
Triggering and Feedback: The Relation between the HI Gas and the Starburst in the Dwarf Galaxy NGC 1569
Creators: name: Muehle, S.
name: Klein, U.
name: Wilcots, E. M.
name: Huettemeister, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As part of our study on the impact of violent star formation on the interstellar medium (ISM) of dwarf galaxies, we report observations of neutral atomic hydrogen (HI) in the post-starburst dwarf galaxy NGC 1569. High-resolution measurements with the VLA (B-, C- and D-array) are aimed at identifying morphological and kinematical signatures in the HI caused by the starburst. Our kinematical data suggest a huge hole in the HI distribution, probably due to the large number of supernovae explosions in the center of the galaxy over the past 20 Myr. Investigating the large-scale HI structure, we confirm the existence of a possible HI companion and a so-called HI bridge east of NGC 1569. Furthermore, we report the detection of additional low-intensity HI halo emission, which leads us to suggest a revised halo structure. Based on the new picture, we discuss the origin of the halo gas and possible implications for the evolution of the starburst in NGC 1569.
description: 22 pages, 13 figures, accepted by AJ
Dynamic Bargaining in Households (with application to Bangladesh)
Creators: name: Ligon, Ethan
name: Ligon, Ethan
Publisher: name: Unknown
Year: 2002
Subjects: Consumer/Household Economics

description: Much recent empirical work on intra-household allocation uses the axiomatic Nash Bargaining model to make predictions about how the distribution of consumption within the household will respond to individuals' income shocks. However, one of the basic axioms underlying this approach is that allocations will be Pareto optimal, so forward-looking, risk adverse household members ought to be expected to smooth away any such response to income shocks-Pareto optimality seems to be too strong in a dynamic setting. In this paper we use explicitly dynamic framework and replace the axiom of Pareto optimality with a weaker notion of efficiency. We give a simple algorithm for computing allocations, and construct an extended example, meant to model the effects of Grameen Bank lending on intra-household allocation in Bangladesh. The model resolves a puzzle in the literature, namely, it predicts that women borrowers will often voluntarily surrender control ("pipeline") their loans to their husbands.
N,N-dibenzyl dithiocarbamato silver(I) as precursor for silver sulfide nanophotocatalysts for photocatalytic degradation of rhodamine 6G and trypan blue dyes
Creators: name: Andrew, Fartisincha P.
name: Goso, Sisonke
name: Paca, Athandwe M.
name: Papo, Tshepiso R.
name: Ajibade, Peter A.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: N,N-dibenzyl dithiocarbamate silver(I) was synthesized and characterized by spectroscopic techniques and single crystal X-ray crystallography. The complex crystallizes in the trigonal space group P31 to form a one-dimensional, chain-like polymeric structure connected by Ag-Ag argentophilic and Ag-S interactions. The complex was used as single source precursor and thermolyzed at 120, 160 and 200 °C in 1-dodecanethiol to prepare silver sulfide nanoparticles (AgS-120, AgS-160 and AgS-200). TEM images showed quasi-spherical nanoparticles with average particle sizes of 4.0, 5.4 and 5.5 nm for nanoparticles prepared at 120, 160 and 200 °C, respectively, with optical band gaps of 3.76, 3.81 and 3.71 eV. The as-prepared silver sulfide nanoparticles potential as photocatalysts were evaluated using rhodamine 6G and trypan blue under irradiation. The photocatalytic degradation efficiency of 42.4% (k = 3.03 × 10−3), 41.9% (k = 2.73 × 10−3) and 56.7% (k = 4.16 × 10−3) for rhodamine 6G dye and 35.4% (2.94 × 10−3), 49.7% (3.87 × 10−3) and 16.9% (9.0 × 10−4) for trypan blue dye were obtained in the presence of AgS-120, AgS-160 and AgS-200, respectively. The kinetics and mechanism of photocatalytic reaction show that the dye degradation in the presence of the as-prepared nanoparticles follow pseudo-first order kinetics.
The Intrinsic Spin Hall Conductivity in a Generalized Rashba Model
Creators: name: Krotkov, P. L.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate the intrinsic spin Hall conductivity σ^{\mathrm{sH}} of a two-dimensional electron system within a generalized Rashba model, showing that it is, in general, finite and model-dependent. Considering arbitrary band dispersion, we find that σ^{\mathrm{sH}} in the presence of the linear-in-momentum spin-orbit coupling of the Rashba form does not vanish in the presence of impurities except for the precisely parabolic spectrum. We show, using the linear response Kubo formalism, how the exact cancellation happens for the quadratic dispersion, and why it does not occur in general. We derive a simple quasiclassical formula for σ^{\mathrm{sH}} in terms of the Fermi momenta for the two electron chiralities, and find that σ^{\mathrm{sH}} is in general of the order of the squared strength of the Rashba term.
The formation of blue cluster in local Universe
Creators: name: Wen, Qingxin
name: Luo, Yu
name: Kang, Xi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is well known from the Butcher-Oemler effect that galaxies in dense environment are mostly red with little star formation and the fraction of blue galaxies in galaxy groups/clusters also declines rapidly with redshifts. A recent work by Hashimoto et al. reported a local 'blue cluster' with high fraction of blue galaxies ($\sim 0.57$), higher than the model predictions. They ascribed this blue cluster to the feeding of gas along a filamentary structure around the cluster. In this work we use group catalog from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) and the state-of-art of semi-analytic model (SAM) to investigate the formation of blue clusters in local Universe. In total, we find four blue clusters with halo mass $\sim 10^{14}M_{\odot}$ at $0.02 < z < 0.082$, while only the one found by Hashimoto et al. is in a filamentary structure. The SAM predicts that blue clusters have later formation time and most blue satellite galaxies are recently accreted. We conclude that the formation of blue clusters is mainly governed by newly accreted blue satellites, rather than the effect of large-scale environment.
description: 11 pages, 11 figures, accepted by RAA
In-silico antibacterial activity of piperazinyl-based copper(II) metallo-organic pharmacophores
Creators: name: Mistri, Soumen
name: Manna, Subal Chandra
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biochemistry
Physical Sciences not elsewhere classified
Cell Biology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: The piperazinyl-based Cu(II)-Schiff base complex {[Cu(HL1′)(N3)]2∙(ClO4)2·4H2O} (1) [HL1′ is the Zwitter ionic form of (E)-2-((2-piperazin-1-ylethylimino)methyl)phenol] was synthesized and characterized by spectroscopic and single crystal X-ray diffraction studies. The X-ray single crystal structure analysis shows that the asymmetric unit of 1 contains a four-coordinate discrete complex cation, [Cu(HL1′)(N3)]+ (1a), with a perchlorate anion and a lattice water molecule. Two square planar units of 1a are dimerized by weak Cu···N intermolecular interaction, forming [Cu(HL1′)(N3)]22+ (1′a). DFT and TD-DFT calculations of the monomeric cationic unit, [Cu(HL1′)(N3)]+ (1a) were performed. In-silico antibacterial activities of HL1 as well as monomeric and dimeric cationic units 1a and 1'a, respectively, were performed and study shows that 1a (EC50 0.30 μM) and 1′a (EC50 0.06 μM) may be treated as antibacterial drugs after in-vivo analysis and clinical testing.
A Semi-Parametric Basis for Combining Estimation Problems Under Quadratic Loss
Creators: name: Judge, George G.
name: Mittelhammer, Ronald C.
name: Judge, George G.
name: Mittelhammer, Ronald C.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Research Methods/ Statistical Methods
subject: Stein-like shrinkage
subject: quadratic loss
subject: ill-conditioned design
subject: semiparametric estimation and inference
subject: data dependent shrinkage vector
subject: asymptotic and finite sample risk.

description: When there is uncertainty concerning the appropriate statistical model to use in representing the data sampling process and corresponding estimators, we consider a basis for optimally combining estimation problems. In the context of the multivariate linear statistical model, we consider a semi-parametric Stein-like (SPSL) estimator, ...that shrinks to a random data-dependent vector and, under quadratic loss, has superior performance relative to the conventional least squares estimator. The relationship of the SPSL estimator to the family of Stein estimators is noted and risk dominance extensions between correlated estimators are demonstrated. As an application we consider the problem of a possibly ill-conditioned design matrix and devise a corresponding SPSL estimator. Asymptotic and analytic finite sample risk properties of the estimator are demonstrated. An extensive sampling experiment is used to investigate finite sample performance over a wide range of data sampling processes to illustrate the robustness of the estimator for an array of symmetric and skewed distributions. Bootstrapping procedures are used to develop confidence sets and a basis for inference.
Near-infrared [FeII] and H2 line mapping of the supernova remnant IC443 with the IRSF/SIRIUS
Creators: name: Kokusho, Takuma
name: Torii, Hiroki
name: Nagayama, Takahiro
name: Kaneda, Hidehiro
name: Sano, Hidetoshi
name: Ishihara, Daisuke
name: Onaka, Takashi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate properties of the interstellar medium (ISM) interacting with shocks around the Galactic supernova remnant IC443, using the results of near-infrared [FeII] and H2 line mapping with the IRSF/SIRIUS. In the present study, we newly performed H2 1-0 S(1) and 2-1 S(1) line mapping with the narrow-band filters tuned for these lines, covering the entire remnant (30'x35'). Combined with an [FeII] line map, our result shows that the H2 line emission is significantly detected in the southern region, while the [FeII] line emission is detected all over the remnant, suggesting that slow and fast shocks propagate through the southern region and the entire remnant, respectively. In particular, the H2 line emission is relatively strong compared to the [FeII] line emission in the southwestern region, where TeV gamma-ray emission is detected. As the strong H2 line emission indicates the dominance of the dense ISM, this result supports the scenario that the gamma-ray emission is likely to be produced through a heavy interaction between cosmic-ray protons and the dense ISM in the southwestern shell. We also find that the H2 and [FeII] line emissions show an anti-correlated spatial distribution in the same region, suggesting the presence of the clumpy ISM. Such a clumpy morphology of the ISM around IC443 may assist cosmic-ray protons to efficiently interact with large amounts of the ISM protons.
description: 20 pages, 6 figures, accepted for publication in ApJ
Multiple Inflation, Cosmic String Networks and the String Landscape
Creators: name: Burgess, C. P.
name: Easther, Richard
name: Mazumdar, Anupam
name: Mota, David F.
name: Multamaki, Tuomas
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the string landscape we examine scenarios for which inflation is a two-step process, with a comparatively short inflationary epoch near the string scale and a longer period at a much lower energy (like the TeV scale). We quantify the number of $e$-foldings of inflation which are required to yield successful inflation within this picture. The constraints are very sensitive to the equation of state during the epoch between the two inflationary periods, as the extra-horizon modes can come back inside the horizon and become reprocessed. We find that the number of $e$-foldings during the first inflationary epoch can be as small as 12, but only if the inter-inflationary period is dominated by a network of cosmic strings (such as might be produced if the initial inflationary period is due to the brane-antibrane mechanism). In this case a further 20 $e$-foldings of inflation would be required at lower energies to solve the late universe's flatness and horizon problems.
description: 27 pages, 6 figures; v2: refences added
Additional file 1 of Chronological set of E. coli O157:H7 bovine strains establishes a role for repeat sequences and mobile genetic elements in genome diversification
Creators: name: Stanton, Eliot
name: Wahlig, Taylor A.
name: Dongjin Park
name: Kaspar, Charles W.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Fig. S1. PCR confirmation of inverted repeats present at the flanking ends of the inversion in farm X strains (FRIK804, FRIK1275, and FRIK1625) and control strain Sakai. a Primer pairs ECs_1507-F/ECs_1508-R and ECs_2759-F/ECs_2760-R were specific to Sp6 and Sp14 in Sakai. Primer pairs ECs_1507-F/ECs_2759-F and ECs_1508-R/ECs_2760-R were specific to regions of Φ804–7 and Φ804–15. b Amplification was observed using primer pairs ECs_1507-F/ECs_1508-R (lane 15) and ECs_2759-F/ECs_2760-R (lane 16) using gDNA extracted from Sakai. Amplification was observed using primer pairs ECs_1507-F/ECs_2759-F (lanes 4, 8, and 13) and ECs_1508-R/ECs_2760-R (lanes 5, 9, and 14) using gDNA extracted from farm X strains. Lanes 1 and 10, 1.0-kb ladder.
Additional file 2 of Chronological set of E. coli O157:H7 bovine strains establishes a role for repeat sequences and mobile genetic elements in genome diversification
Creators: name: Stanton, Eliot
name: Wahlig, Taylor A.
name: Dongjin Park
name: Kaspar, Charles W.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Fig. S2. PCR confirmation of regions flanking inter-prophage deletion in FRIK1275 and FRIK1625 using PCR amplification. Lane 1: 1.0 kb ladder. gDNA in lane 2 (FRIK804), lane 3 (FRIK1275), lane 4 (FRIK1625), and lane 5 (Sakai). Amplification was observed only in strains with the inter-prophage deletion between the identified direct repeats.
Exact time dependent Hopf solitons in 3+1 dimensions
Creators: name: Ferreira, L. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We construct an infinite number of exact time dependent soliton solutions, carrying non-trivial Hopf topological charges, in a 3+1 dimensional Lorentz invariant theory with target space S^2. The construction is based on an ansatz which explores the invariance of the model under the conformal group SO(4,2) and the infinite dimensional group of area preserving diffeomorphisms of S^2. The model is a rare example of an integrable theory in four dimensions, and the solitons may play a role in the low energy limit of gauge theories.
description: 4 pages revtex, 2 eps figures, replaced with one reference added
Synthesis, crystal structure, Hirshfeld surface analysis, DFT studies and biological evaluation of bis(acetonitrile)bromido(η6-1-isopropyl-4-methylbenzene)osmium(II) hexafluoroantimonate
Creators: name: Tapala, Kgaugelo C.
name: More, Garland K.
name: Clayton, Hadley S.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biochemistry
Medicine
Cell Biology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer
Hematology

description: The complex bis(acetonitrile)bromido(η6-1-isopropyl-4-methylbenzene)osmium(II) hexafluoroantimonate, [OsBr(C10H14)(CH3CN)2]SbF6 (1) crystallizes as a triclinic system in space group P1 (no. 2), consisting of two cationic osmium(II) complex ions and two anionic hexafluoroantimonate counterions in each cell. Density Functional Theory (DFT) calculations were performed at the B3LYP/LanL2DZ and B3LYP/Def2 − SVP/Def2 − TZVP levels of theory. Reactivity descriptors and charge transfer properties were computed using frontier molecular orbital analysis. The DFT-optimized model systems from both basis sets were comparable to the experimentally determined X-ray diffraction results. Hirshfeld surface analysis shows significant non-covalent interactions including hydrogen bonds and halogen interactions. The MTT technique was utilized to conduct an in vitro cytotoxicity assay of 1 against cancerous cell lines (MCF-7 and A549) and normal cells (HEK293). Complex 1 is potent towards cancer cells as evidenced by the IC50 values of 5.02 ± 0.05 µM for MCF-7 cells and 13.36 ± 0.04 µM for A549 cells. Complex 1 demonstrated lower toxicity to normal cells with an IC50 value of 26.76 ± 0.08 µM for the HEK293 cell line compared to the doxorubicin standard with an IC50 value of 1.2 ± 0.1 µM.
Generation of Hyperentangled Photons Pairs
Creators: name: Barreiro, Julio T.
name: Langford, Nathan K.
name: Peters, Nicholas A.
name: Kwiat, Paul G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally demonstrate the first quantum system entangled in every degree of freedom (hyperentangled). Using pairs of photons produced in spontaneous parametric downconversion, we verify entanglement by observing a Bell-type inequality violation in each degree of freedom: polarization, spatial mode and time-energy. We also produce and characterize maximally hyperentangled states and novel states simultaneously exhibiting both quantum and classical correlations. Finally, we report the tomography of a 2x2x3x3 system (36-dimensional Hilbert space), which we believe is the first reported photonic entangled system of this size to be so characterized.
description: 5 pages, 3 figures, 1 table, published version
Morphologies of Ultracompact HII Regions in W49A and Sgr B2: Prevalence of Shells and a Modified Classification Scheme
Creators: name: De Pree, C. G.
name: Wilner, D. J.
name: Deblasio, J.
name: Mercer, A. J.
name: Davis, L. E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used Very Large Array (VLA) observations of the massive star forming regions W49A and Sgr B2, obtained with resolutions from 2\farcs0 to 0\farcs04, to classify the morphologies of nearly 100 ultracompact HII regions. These high resolution, multi-frequency, multi-configuration VLA observations motivate several modifications of the existing morphological classification scheme for UC HII regions. In this work, we describe the modified morphology scheme and the criteria used in source classification. In particular, we drop the ``core-halo'' classification, add a ``bipolar'' classification, and change the shell classification to ``shell-like''. We tally the percentage of each morphology found in the Sgr B2 and W49A regions and find broad agreement with the Galactic plane surveys in the distribution of morphologies for most types. However, we find that nearly a third of the sources in these regions are shell-like, which is a higher percentage by nearly a factor of ten than found in the surveys of Galactic plane star forming regions by Wood & Churchwell (1989a) and Kurtz et al. (1994). This difference may be due to physical differences in the environments of these two extreme star forming regions. Alternatively, differences in observational technique may be responsible.
description: 10 pages, 1 figure, 1 table, to appear in The Astrophysical Journal Letters
Transport properties of N=4 supersymmetric Yang-Mills theory at finite coupling
Creators: name: Benincasa, Paolo
name: Buchel, Alex
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Gauge theory-string theory duality describes strongly coupled N=4 supersymmetric SU(n) Yang-Mills theory at finite temperature in terms of near extremal black 3-brane geometry in type IIB string theory. We use this correspondence to compute the leading correction in inverse 't Hooft coupling to the shear diffusion constant, bulk viscosity and the speed of sound in the large-n N=4 supersymmetric Yang-Mills theory plasma. The transport coefficients are extracted from the dispersion relation for the shear and the sound wave lowest quasinormal modes in the leading order alpha'-corrected black D3 brane geometry. We find the shear viscosity extracted from the shear diffusion constant to agree with result of [hep-th/0406264]; also, the leading correction to bulk viscosity and the speed of sound vanishes. Our computation provides a highly nontrivial consistency check on the hydrodynamic description of the alpha'-corrected nonextremal black branes in string theory.
description: 19 pages, LaTeX
Intermittent quakes and record dynamics in the thermoremanent magnetization of a spin-glass
Creators: name: Sibani, Paolo
name: Rodriguez, G. F.
name: Kenning, G. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A novel method for analyzing the intermittent behavior of linear response data in aging systems is presented and applied to spin-glass thermoremanent magnetization (TRM) (Rodriguez et al. Phys. Rev. Lett. 91, 037203, 2003). The probability density function (PDF) of magnetic fluctuations is shown to have an asymmetric exponential tail, demonstrating that the demagnetization process is carried by intermittent, significant, spin rearrangements or \emph{quakes}. These quakes are most pronounced shortly after the field removal, $t/t_w \approx 1$ and in the non-equilibrium aging regime $t/t_w >>1$. For a broad temperature range, we study the dependence of the TRM decay rate on $t$, the time since the initial quench and on $t_w$, the time at which the magnetic field is cut. The $t$ and $t_w$ dependence of the rate is extracted numerically from the data and described analytically using the assumption that the linear response is subordinated to the intermittent process which spasmodically release the initial imbalances created by the quench.
description: 8 pages, 9 figures. The paper has been expanded and restructured, the figures have been enlarged and improved. Final version, to appear in Phy. Rev. B
Complexes of copper(II), nickel(II), and cobalt(II) itaconates with chelating N-heterocycles: synthesis, structure, thermal properties, sorption activity, and their use in composites science
Creators: name: Uflyand, Igor E.
name: Tkachev, Valerii V.
name: Zhinzhilo, Vladimir A.
name: Drogan, Ekaterina G.
name: Burlakova, Victoria E.
name: Dzhardimalieva, Gulzhian I.
name: Sokolov, Mikhail E.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Cell Biology
Chemical Sciences not elsewhere classified

description: The reactions between copper(II), nickel(II) or cobalt(II) itaconates and N-heterocycles (2,2′-bipyridine, 1,10-phenanthroline, 4′-phenyl-2,2′:6′,2′′-terpyridine) lead to new metal-containing monomers. The complex of cobalt(II) itaconate with 4′-phenyl-2,2′:6′,2′′-terpyridine crystallizes in the triclinic form with the formula unit C52H44CoN6O10 and a molar mass of 969.85 g/mol. Unit cell parameters: a 9.02 (4) Å, b 12.52 (5) Å, c 20.68 (10) Å, α 99.64°, β 99.06°, γ 100.22 (4)°, V 2224.64 Å3, Z = 2, Z′ = 0, T = 100 K, dcalc = 1.44 g/cm3, packing factor 0.71, crystal size 0.30 × 0.32 × 0.18 mm. Each cobalt ion is coordinated by six nitrogen atoms from two 4′-phenyl-2,2′:6′,2′′-terpyridine molecules lying in mutually perpendicular planes with the formation of the CoN6 coordination site. Medium-strength hydrogen bonds including terpyridine ligands, itaconate ions, and water molecules lead to infinite one-dimensional chains. Thermolysis of the metal-containing monomers proceeds through three successive stages (dehydration, solid-state polymerization, and destruction) and makes it possible to obtain the M@C nanomaterials with the core-shell structure. The tribological characteristics of the obtained nanomaterials have been studied.
Enabling Mixed-Precision Quantized Neural Networks in Extreme-Edge Devices
Creators: name: Bruschi, Nazareno
name: Garofalo, Angelo
name: Conti, Francesco
name: Tagliavini, Giuseppe
name: Rossi, Davide
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The deployment of Quantized Neural Networks (QNN) on advanced microcontrollers requires optimized software to exploit digital signal processing (DSP) extensions of modern instruction set architectures (ISA). As such, recent research proposed optimized libraries for QNNs (from 8-bit to 2-bit) such as CMSIS-NN and PULP-NN. This work presents an extension to the PULP-NN library targeting the acceleration of mixed-precision Deep Neural Networks, an emerging paradigm able to significantly shrink the memory footprint of deep neural networks with negligible accuracy loss. The library, composed of 27 kernels, one for each permutation of input feature maps, weights, and output feature maps precision (considering 8-bit, 4-bit and 2-bit), enables efficient inference of QNN on parallel ultra-low-power (PULP) clusters of RISC-V based processors, featuring the RV32IMCXpulpV2 ISA. The proposed solution, benchmarked on an 8-cores GAP-8 PULP cluster, reaches peak performance of 16 MACs/cycle on 8 cores, performing 21x to 25x faster than an STM32H7 (powered by an ARM Cortex M7 processor) with 15x to 21x better energy efficiency.
description: 4 pages, 6 figures, published in 17th ACM International Conference on Computing Frontiers (CF '20), May 11--13, 2020, Catania, Italy
Additional file 10 of Chronological set of E. coli O157:H7 bovine strains establishes a role for repeat sequences and mobile genetic elements in genome diversification
Creators: name: Stanton, Eliot
name: Wahlig, Taylor A.
name: Dongjin Park
name: Kaspar, Charles W.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 10: Table S7. Locations of ISEc8 locations in FRIK804 and Sakai chromosomes.
HIGHER PRICES FROM ENTRY: PRICING OF BRAND-NAME DRUGS
Creators: name: Perloff, Jeffrey M.
name: Suslow, Valerie Y.
name: Seguin, Paul J.
name: Perloff, Jeffrey M.
name: Suslow, Valerie Y.
name: Seguin, Paul J.
Publisher: name: Unknown
Year: 1996
Subjects: Demand and Price Analysis
Industrial Organization

description: When a new firm enters a market and starts selling a spatially-differentiated product, the prices of existing products may rise due to a better match between consumers and products. Entry may have three unusual effects. First, the new price is above the monopoly price if the two firms collude and may be above the monopoly price even if the firms play Bertrand. Second, the Bertrand and collusive price may be identical. Third, prices, combined profits, and consumer surplus may all rise with entry. Consistent with our theory, the real prices of some anti-ulcer drugs rose as new products entered the market.
Structural characterization and anticancer studies of copper(II) and cobalt(III) complexes containing N,O-donor heterocyclic chelators
Creators: name: Lavanya, C.
name: Parveen, S.
name: Sabarinathan, D.
name: Saju, Leena
name: Kalaiarasi, G.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Chemical Sciences not elsewhere classified
subject: Cancer

description: New Cu(II) and Co(III) complexes were synthesized from reaction of 3-((E)-1-(((E)-4-(diethylamino)-2-hydroxybenzylidene)hydrazono)ethyl)-8-methoxy-2H-chromen-2-one (HL) with Cu(NO3)2·3H2O and Co(NO3)2·6H2O in methanol. The synthesized compounds were characterized by various analytical and spectral (IR, UV-Vis, NMR, EPR, ESI-MS and HR-MS) techniques. From the spectral studies, we concluded that the formation of the ligand and complexes. In the copper complex with formula of [Cu2(L)(NO3)3(H2O)], HL coordinated to copper ion via azomethine nitrogen, lactone oxygen, azomethine nitrogen and oxalate oxygen atoms. In cobalt complex, the ligand coordinated to cobalt ion via ring carbonyl oxygen, azomethine nitrogen, oxalate oxygen and azomethine nitrogen, and the complex is of ML2 type with the general formula [CoL2]·2NO3. The cytotoxic nature of the compounds was analyzed with human liver cancer cells (HepG2) and human breast cancer cells (MM2), in which the complexes exhibited a comparable activity than the positive control cisplatin. The IC50 values of the compounds were greater than 200 μM for non-cancerous human umbilical vein endothelial (HUVEC) cells, indicating selectivity of the compounds towards cancer cells rather than normal cells. The apoptogenic natures of the complexes with HepG2 and MM2 cancer cells were confirmed using AO-EB and DAPI staining assays. These results revealed the possibility of developing highly active cobalt and copper complexes as anticancer agents.
U.S. Demand for Food and Nutrition in the 20th Century
Creators: name: Beatty, Timothy K.M.
name: LaFrance, Jeffrey T.
name: Beatty, Timothy K.M.
name: LaFrance, Jeffrey T.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: aggregation
subject: agricultural policy
subject: food demand
subject: Gorman Systems of Demands
subject: nutrition

description: A great deal of research on farm and food policy and consumer choice focuses on the link between food consumption and nutrition. This paper presents and applies a new method to analyze the demand for food and nutrients, and consumer welfare. The foundation for this method is the recent extension of the Gorman class of exactly aggregable demand models to incomplete demand systems. The purposes of this approach are to derive and implement coherent, flexible empirical models of food and nutrient demand, to estimate the model parameters consistently with aggregate data, and to make inferences on the impacts of farm and food policy changes on food and nutrient demand and consumer welfare of those policies. We apply this framework to annual per capita U.S. demand for food and nutrients 1919-2000, excluding 1942-1946 to account for World War II. The empirical model is an incomplete system of Gorman Engel curves that is nonlinear in income. This class of demand models generates theoretically consistent, exactly aggregable systems of demand equations for which only a small number of summary statistics for the distribution of income are required to estimate the model's parameters consistently using aggregate data. This model is estimated with 0o homogeneity, monotonicity, symmetry, and a negative semidefinite Slutsky matrix imposed globally, so that the results can be used directly for economic analyses. A complete time series of price and income elasticities of food and nutrient demand are obtained for the sample period.
[Brev til DKNVS]
Creators: name: Trondhjems Magistrat
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1860

description: Opplyser at Telegrafdireksjonen har henvendt seg til magistraten med et forslag om telegrafmeldinger om vær og vind
High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables
Creators: name: Takei, Nobuyuki
name: Yonezawa, Hidehiro
name: Aoki, Takao
name: Furusawa, Akira
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally demonstrate continuous-variable quantum teleportation beyond the no-cloning limit. We teleport a coherent state and achieve the fidelity of 0.70$\pm$0.02 that surpasses the no-cloning limit of 2/3. Surpassing the limit is necessary to transfer the nonclassicality of an input quantum state. By using our high-fidelity teleporter, we demonstrate entanglement swapping, namely teleportation of quantum entanglement, as an example of transfer of nonclassicality.
description: revised version, 4 pages, 4 figures
Additional file 3 of Effects of the KEIGAAF intervention on the BMI z-score and energy balance-related behaviors of primary school-aged children
Creators: name: Verjans-Janssen, Sacha R. B.
name: Gerards, Sanne M. P. L.
name: Kremers, Stef P. J.
name: Vos, Steven B.
name: Jansen, Maria W. J.
name: Kann, Dave H. H. Van
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 3 The TIDieR Checklist.
Additional file 2 of Effects of the KEIGAAF intervention on the BMI z-score and energy balance-related behaviors of primary school-aged children
Creators: name: Verjans-Janssen, Sacha R. B.
name: Gerards, Sanne M. P. L.
name: Kremers, Stef P. J.
name: Vos, Steven B.
name: Jansen, Maria W. J.
name: Kann, Dave H. H. Van
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2 Intervention effects of comprehensive physical activity (PA) promoting approach on children’s BMI z-score, PA levels and nutrition behavior. Table S1. One- and two-year observed changes in BMI z-score for (1) the comprehensive PA intervention group, (2) the less comprehensive PA intervention group and (3) the control group (Model 1) and intervention effects after one and two years comparing (1), (2) and (3) (Model 2). Table S2. One- and two-year observed changes in sedentary and physical activity (PA) behavior for (1) the comprehensive PA intervention group, (2) the less comprehensive PA intervention group and (3) the control group (Model 1) and intervention effects after one and two years comparing (1), (2) and (3) (Model 2). Table S3. One- and two-year observed changes in (child-reported) nutrition behavior at school for (1) the comprehensive physical activity (PA) intervention group, (2) the less comprehensive PA intervention group and (3) the control group (Model 1) and intervention effects after one and two years comparing (1), (2) and (3) (Model 2). Table S4. One- and two-year observed changes in (parent-reported) daily nutrition behavior for (1) the comprehensive physical activity (PA) intervention group, (2) the less comprehensive PA intervention group and (3) the control group (Model 1) and intervention effects after one and two years comparing (1), (2) and (3) (Model 2).
Modular periodicity of binomial coefficients
Creators: name: Mattarei, Sandro
Publisher: name: arXiv
Year: 2005
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B65; 05A10

description: We prove that if the signed binomial coefficient $(-1)^i\binom{k}{i}$ viewed modulo p is a periodic function of i with period h prime to p in the range $0\le i\le k$, then k+1 is a power of p, provided h is not too large compared to k. (In particular, $2h\le k$ suffices.) As an application, we prove that if G and H are multiplicative subgroups of a finite field, with H
description: 8 pages. Somehow, the references were missing in the previous version. An error in the abstract (but not in the main text) of the printed version is corrected here: h needs to be prime to p
Synthesis, characterization, in vitro and in silico biological studies of 3d transition metal(II) chelates of a Schiff base derived from sulfamethazine and 3,5-diiodosalicylaldehyde
Creators: name: Saeed, Muhammad
name: Parveen, Bushra
name: Rasool, Nasir
name: Ali, Kulsoom Ghulam
name: Munawar, Khurram Shahzad
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified

description: A Schiff base (imine) ligand, (E)-4-((2-hydroxy-3,5-diiodobenzylidene)amino)-N-(4,6-dimethylpyrimidin-2-yl)benzenesulfonamide (HL), was synthesized by condensation of 3,5-diiodosalicylaldehyde with sulfamethazine. The ligand was then complexed with Zn(II), Cu(II), Ni(II), Co(II) and Fe(II) employing a metal to ligand ratio of 1:2 to form chelates (1-5), [M(L)2(H2O)2]. Characterization was done by UV-visible, FTIR, 1H and 13C NMR spectroscopy, elemental analysis, magnetic moments, thermogravimetric analyses (TGA) and conductance studies. The Schiff base behaved as a bidentate ligand and metal chelates assumed octahedral geometry. MOE-docking was employed to assess binding of the Schiff base (HL) and its chelates (1-5) with 1T2P, 1VVQ, 2W61, 3U2D, 4H8E and 5K18 proteins. Results indicated that Zn(II) chelate (1) and Fe(II) chelate (5) are the most potent compounds. Antibacterial and antibiofilm activities were executed against Enterococcus faecalis, Staphylococcus aureus, Proteus mirabilis and Klebsiella pneumoniae. Antifungal activities were performed against Candida albicans and Aspergillus niger. The Schiff base exhibited moderate antibacterial/antifungal activities that were enhanced on chelation with metal ions. Zinc(II) chelate (1) and Fe(II) chelate (5) show excellent antibacterial/antifungal activities. Complex 2 exhibited good antibiofilm activity.