cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Length of soybean and corn seedlings influenced by seed vigor and size
Creators: name: Meneguzzo, Michele Renata Revers
name: Carvalho, Ivan Ricardo
name: Dellagustin, Simone Morgan
name: Xavier, Fernanda Da Motta
name: Nadal, Ariele Paula
name: Gonçalves, Vanessa Pinto
name: Tunes, Carla Dias
name: Conte, Giordano Gelain
name: Meneghello, Géri Eduardo
name: Villela, Francisco Amaral
Publisher: name: Revista de Ciências Agrárias
Year: 2020

description: This work had as objective to adjust the methodology of the seedling length test for soybean and maize seeds, depending on the level of vigor and size of the seed.Therefore, it was used soybean seeds of cultivar 5855 RSF IPRO (BMX ELITE) andhybrid maize seeds of the cultivar Fórmula Viptera , classified in two sizes of sieve and two levels of vigor for soybean and three levels for maize.A completely randomized design with four replications was adopted.Germination, first germination counting, emergence in seedbed, emergence velocity index, emergence velocity, shoot, root and total length (evaluated every 12 hours), shoot, root and total dry mass were evaluated.The classification of soybean seeds by size exerts a direct influence on seed germination and vigor, and consequently on seedling length, where seeds with high vigor and of the 6.50 mm sieve presented higher rates of length.Root and total length of maize seedlings are only affected by factors of vigor and seed size acting alone.The best time to be carried out the evaluation of seedlings length in soybean seeds is 120 hours, and in corn is 96 hours.
description: Revista de Ciências Agrárias, vol. 43 n.º 2 (2020)
Modified Confinement Model for Size Dependent Raman Shift and Linewidth of Silicon Nanocrystals
Creators: name: Gupta, Sanjeev K.
name: Jha, Prafulla K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A modified phonon confinement model considering the size distribution, an improved phonon dispersion curve and a confinement function is developed for the calculation of size dependent Raman spectra of the silicon (Si) nanocrystals. The model is capable in simultaneous calculation of the Raman shift, intensity and linewidth. The calculated size dependent redshift and linewidth of Raman spectra are in good agreement with the available experimental data in literature and better than previously reported theoretical results. The rapid rise in the redshift and linewidth for relatively smaller Si nanocrystals are well reproduced. The asymmetric behavior of Raman spectra is also obtained from the present model.
description: 15 pages, 4 figures
Modelling polarized X-ray pulses from accreting millisecond pulsars with X-PSI, using different hot spot locations and shapes
Creators: name: Salmi, Tuomo
name: Dorsman, Bas
name: Watts, Anna L.
name: Bobrikova, Anna
name: Di Marco, Alessandro
name: Loktev, Vladislav
name: Papitto, Alessandro
name: Pilia, Maura
name: Poutanen, Juri
name: Rankin, John
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present an analysis of polarized X-ray pulses based on simulated data for accreting millisecond pulsars (AMPs). We used the open-source X-ray Pulse Simulation and Inference code (previously applied to NICER observations), which we upgraded to allow polarization analysis. We provide estimates of how well neutron star (NS) parameters can be constrained for the Imaging X-ray Polarimetry Explorer (IXPE) and find that strong limits on the hot region geometries can be hard to obtain if the emitting hot region is large and the number of polarized photons relatively small. However, if the star is bright enough and the hot regions are small and located so that polarization degree is higher, the observer inclination and hot spot colatitude can be constrained to a precision of within a few degrees. We also found that the shape of the hot region, whether a circle or a ring, cannot be distinguished in our most optimistic scenario. Nevertheless, future X-ray polarization missions are expected to improve the constraints, and already the recent AMP polarization detections by IXPE should help to infer the NS mass and radius when combined with modelling of X-ray pulse data sets that do not contain polarization information.
description: 8 pages, 3 figures, 1 table, published in MNRAS
Optimal electron propagation on a quantum chain by a topological phase
Creators: name: Paganelli, S.
name: Giorgi, G. L.
name: de Pasquale, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum diffusion of an electron in a quantum chain starting from an initial state localized around a given site. As the wavepacket diffuses, the probability of reconstructing the initial state on another site diminishes drastically with the distance. In order to optimize the state transmission we find that a topological quantum phase can be introduced. The effect of this phase is the reduction of wavepacket spreading together with almost coherent group propagation. In this regime, the electron has a quasi-linear dispersion and high fidelity can be achieved also over large distances in terms of lattice spacing.
description: 8 pages, 6 figures
Stone observatory at Bric Pinarella (Finale Ligure, Italy)
Creators: name: Codebò Mario
name: Henry, De Santis
name: Pesce Giovanni, L.
Publisher: name: Archaeoastronomy and Ancient Technologies
Year: 2017
Subjects: ARCHAEOASTRONOMY
OBSERVATORY
FINALE LIGURE
STANDING STONE
EQUINOXES
ELONGATION
UPPER MERIDIAN TRANSIT
LOCAL MERIDIAN
MERIDIAN CIRCLE
CASELLA

description: This paper reports the latest findings on the stone observatory of Bric Pinarella (Finale Ligure, Savona, northern Italy), first described in 2006 at the conference of the Italian Society of Archaeoastronomy (SIA). The settlement is located near the upland plain of the Mànie, which is an area known for the archaeological remains and the natural attractions. The settlement is constituted of three archaeological evidences: a small building, two short standing stones 44 centimetres apart, and a standing stone vertically fitted in the ground with a natural hole in its free end. Archeoastronomical investigations demonstrated that the hole in the standing stone allows positioning of the sunrise at the equinoxes over the Mànie skyline, whereas the two standing stones allow tracing of the local meridian with azimuth 360°↔180°. Other possible astronomical functions such as the identification of the elongation of the Sun from the east cardinal point and the study of the Sun and Moon’s upper meridian transit (in this respect the site could be described as a rudimentary meridian circle) are discussed in the paper. Despite the fact that, to date, its construction time is still unknown, the most recent findings show that the whole site could be an old astronomical observatory.
A toric varieties approach to geometrical structure of multipartite states
Creators: name: Heydari, Hoshang
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the geometrical structures of multipartite states based on construction of toric varieties. In particular, we describe pure quantum systems in terms of affine toric varieties and projective embedding of these varieties in complex projective spaces. We show that a quantum system can be corresponds to a toric variety of a fan which is constructed by gluing together affine toric varieties of polytopes. Moreover, we show that the projective toric varieties are the spaces of separable multipartite quantum states. The construction is a generalization of the complex multi-projective Segre variety. Our construction suggests a systematic way of looking at the structures of multipartite quantum systems.
description: Talk given at the Vaxjo conference on Quantum Theory: Reconsideration of Foundations-5 (QTRF-5)
A lysimeter study of domestic waste water renovation by forest soil filtration
Creators: name: Khor, Chin Choon
Publisher: name: University of British Columbia
Year: 2011

description: Laboratory lysimeters were used to investigate the behaviour, over time, of a humid west coast forest soil under intermittent primary municipal waste water irrigation. Mineral soil packed to a depth of 69 cm and to a uniform density of about 0.9 gm per cm³ was covered with a forest floor 9 cm thick. Sintered glass bead tensiometers were used to gauge the water potential distributions in the soil lysimeters. Irrigation and drainage systems were designed to maintain constant rates of waste water application and facilitate measurement of drainage rates. Two groups of soil lysimeters each with triplicate samples, were loaded with waste water at the rates of 0.23 cm per day ( 37 cm³ per day ) and 0.47 cm per day ( 75 cm³ per day ) for a period of 9 months. The soil lysimeters were incubated at a temperature of about 15.5 degrees Centigrade. The total amounts of nitrogen added to both groups of soil lysimeters were 223.7 gm and 436.9 gm or equivalent to 1.4 % and 2.7 % of the total nitrogen of the original soil, respectively. Renovations of wastewater in terms of nitrogen were 75 % and 43 % with respect to the two groups of soil lysimeters. Renovations in terms of phosphorus were more than 99 % in both groups of soil lysimeters. Retention of nutrients by the soil was increased with time under favourable aerobic conditions. Uptake of nutrients by vegetation in the field would minimize leaching losses. Results from this experiment indicated no significant changes in the physical and chemical behaviour of the soils. Proper design of the waste water irrigation system in terms of loading would maximize the efficiency of renovation without deteriorating the behaviour of the soils.
Particle in a box with a delta-function potential: strong and weak coupling limits
Creators: name: Joglekar, Yogesh N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: A particle in a one-dimensional delta-function potential and particle in a box are two well-known pedagogical examples; their combination, particle in a box with a delta-function potential V_λ(x)=λδ(x-x_0), too, has been recently explored. We point out that it provides a unique example that is solvable in the weak (λ->0) and the strong (1/λ->0) coupling limits. In either limit, the attractive and repulsive potentials lead to identical spectra, with the possible exception of a single negative-energy state that is present when the potential is attractive. We numerically obtain the spectra near the strong-coupling limit and discuss the consequences of the degeneracy that arises when 1/|λ|=0.
description: minor corrections; a module for numerical results is http://demonstrations.wolfram.com/ParticleInABoxSpectraForDeltaFunctionPerturbation/
SIMCor. Leaflet
Creators: name: Rizzo, Anna
name: Servidio, Stefania
Publisher: name: Zenodo
Year: 2022

description: Leaflet illustrating project rationale, objectives and clinical focus.
description: SIMCor (In-Silico testing and validation of Cardiovascular IMplantable devices) has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 101017578.
New infrared cut-off for the holographic scalar fields models of dark energy
Creators: name: Granda, L. N.
name: Oliveros, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Introducing a new infrared cut-off for the holographic dark-energy, we study the correspondence between the quintessence, tachyon, K-essence and dilaton energy density with this holographic dark energy density in the flat FRW universe. This correspondence allows to reconstruct the potentials and the dynamics for the scalar fields models, which describe accelerated expansion.
description: 12 pages, references added
A bacterial ratchet motor
Creators: name: Di Leonardo, R.
name: Angelani, L.
name: Ruocco, G.
name: Iebba, V.
name: Conte, M. P.
name: Schippa, S.
name: De Angelis, F.
name: Mecarini, F.
name: Di Fabrizio, E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Self-propelling bacteria are a dream of nano-technology. These unicellular organisms are not just capable of living and reproducing, but they can swim very efficiently, sense the environment and look for food, all packaged in a body measuring a few microns. Before such perfect machines could be artificially assembled, researchers are beginning to explore new ways to harness bacteria as propelling units for micro-devices. Proposed strategies require the careful task of aligning and binding bacterial cells on synthetic surfaces in order to have them work cooperatively. Here we show that asymmetric micro-gears can spontaneously rotate when immersed in an active bacterial bath. The propulsion mechanism is provided by the self assembly of motile Escherichia coli cells along the saw-toothed boundaries of a nano-fabricated rotor. Our results highlight the technological implications of active matter's ability to overcome the restrictions imposed by the second law of thermodynamics on equilibrium passive fluids.
description: 4 pages, 3 figures
Gluon Polarisation in the Nucleon and Longitudinal Double Spin Asymmetries from Open Charm Muoproduction
Creators: name: COMPASS Collaboration
name: Alekseev, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The gluon polarisation in the nucleon has been determined by detecting charm production via D0 meson decay to charged K and pi in polarised muon scattering off a longitudinally polarised deuteron target. The data were taken by the COMPASS Collaboration at CERN between 2002 and 2006 and corresponds to an integrated luminosity of 2.8 fb^-1. The dominant underlying process of charm production is the photon-gluon fusion to a cc-bar pair. A leading order QCD approach gives an average gluon polarisation of (Delta g/g)_x= -0.49 +- 0.27(stat) +- 0.11(syst) at a scale mu^2 ~ 13 (GeV/c)^2 and at an average gluon momentum fraction (x) ~ 0.11. The longitudinal cross-section asymmetry for D0 production is presented in bins of the transverse momentum and the energy of the D0 meson.
description: Only Meta data changed (title), 16 pages, 3 figures
Searching for variable stars in Galactic Open Clusters
Creators: name: Greco, Claudia
name: Mowlavi, Nami
name: Eyer, Laurent
name: Spano, Maxime
name: Varadi, Mihaly
name: Burki, Gilbert
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A long-term project, aiming at systematic search for variable stars in Galactic Open Clusters, was started at the Geneva Observatory in 2002. We have been observing regularly a sample of twenty-seven Galactic Open Clusters in the U, B, V Geneva filters. The goal is to identify and to study their variable stars, as well as the connection between the variable stars in a cluster and the cluster properties. We present the status of this work in progress, and show preliminary results for one of these clusters, IC 4651.
description: To appear in the proceedings of Stellar Pulsation: Challenges for theory and observations Conference, Santa Fe, NM, USA
Effects of differing amounts of visual cues and intervening responses on the acquisition of linear function rules
Creators: name: Dobson, Leona Nancy
Publisher: name: University of British Columbia
Year: 2011

description: The effect of pointing (presence or absence) as an intervening activity, at the salient features of pictorial representations of differing amounts of visual cues (weight, context, both, or neither) for a concrete weighing operation, was investigated on the acquisition rate of three linear function rules. They were a coefficient rule (a. F = S), an intercept rule (F + b = S), and a complex rule (a. F + b = S), in a rule learning paradigm for Grades 4, 5, and 6 school children. The first two rules were presented in a counter-balanced order. Univariate analyses of variance of total error and ratio of error measures indicated that the pointing response was more effective than not pointing for the faster acquisition of the first task. Pointing was not significantly effective for the second task, although the combination of context and weight cues was more effective for this task than was each visual cue presented alone. The effects of training Ss to point on the two tasks, when transferred to the third, Complex-Rule task with no visual cues present, were negative. The findings were interpreted to mean that the calling of the Ss' attention to visual cues by pointing is only effective for the first task undertaken, and the benefit from pointing diminishes thereafter. The negative transfer to the last task can be accounted for by a presumably inevitable change in strategy as the problem, for those who have been accustomed to making the pointing response, switches from the concrete context of a weighing situation to an abstract problem in numbers.
A Estratégias de manejo para melhoria da camada de enraizamento profunda de um Latossolo
Creators: name: Piccin, Marcieli
name: Amado, Telmo Jorge Carneiro
name: Fiorin, Jackson Ernani
Publisher: name: Revista de Ciências Agrárias
Year: 2020

description: A longa duração do sistema plantio direto tem causado limitações para o solo, como a compactação e a acidez subsuperficiais. O objetivo deste trabalho foi avaliar os efeitos de estratégias de manejo sobre os atributos do solo e a produtividade da soja. O experimento foi realizado em um Latossolo nas safras agrícolas de 2016/17 e 2017/18 e seu delineamento experimental foi de blocos ao acaso com três repetições. Os tratamentos foram constituídos pela aplicação de estratégias de descompactação (escarificação e subsolagem) e de melhoria química (óxido de cálcio e magnésio, calcário e gesso), utilizadas de forma isolada e combinada. As amostragens de solo para análise química e a determinação da resistência à penetração do solo foram realizadas 6 e 18 meses após a aplicação dos tratamentos. A escarificação e a subsolagem foram eficientes na redução da compactação, mas apresentaram efeito temporário no solo. A subsolagem intensa associada à aplicação profunda de óxido de cálcio e magnésio, após 18 meses a aplicação, incrementou os valores de pH e os teores de cálcio e magnésio, além de neutralizar a saturação por alumínio até 60 cm. Em ambas as safras avaliadas, não houve efeito significativo dos tratamentos sobre a produtividade da soja.
description: Revista de Ciências Agrárias, vol. 43 n.º 2 (2020)
The Calabi-Yau problem for minimal surfaces with Cantor ends
Creators: name: Forstneric, Franc
Publisher: name: arXiv
Year: 2022
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 53A10. Secondary 32B15

description: We show that every connected compact or bordered Riemann surface contains a Cantor set whose complement admits a complete conformal minimal immersion in $\mathbb R^3$ with bounded image. The analogous result holds for holomorphic immersions into any complex manifold of dimension at least $2$, for holomorphic null immersions into $\mathbb C^n$ with $n\ge 3$, for holomorphic Legendrian immersions into an arbitrary complex contact manifold, and for superminimal immersions in any self-dual or anti-self-dual Einstein four-manifold.
description: Rev. Mat. Iberoam., to appear
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different qualities of irrigation water
Creators: name: Castanheira, Nadia
name: Paz, Ana M.
name: Farzamian, Mohammad
name: Paz, Maria Catarina
name: Santos, Fernando M.
name: Fernandes, Manuel L.
name: Pires, Fernando P.
name: Gonçalves, Maria Conceição
Publisher: name: Revista de Ciências Agrárias
Year: 2020

description: The control and mitigation of soil salinization and/or sodicization phenomena are considered one of the main challenges of irrigated agriculture. In Portugal, Lezíria Grande of Vila Franca de Xira its a region with increased salinization and/or sodicization risks due to its costal location with tidal influence. The aim of this study was to evaluate soil water and salt dynamics in a irrigated Fluvisol with a crop rotation of maize and annual ryegrass, and to predict irrigation-induced risks of soil salinization. We first calibrated the Hydrus 1D model for predicting soil water flow and solute transport with observed field data, afterwards we predict future risks of soil salinization performing a scenario analyses considering irrigation with different water qualities (ECw of 1.5, 3 and 5 dS m-1). We observed that when the ECw increases to values of 5 dS m-1, the average solute concentration in the root zone rises to levels above the threshold tolerated by maize. Hydrus 1D successfully simulated soil water content (RMSE= 0.019 m3m-3 (0.23-0.58 m3m-3) and R2= 0.94), the total dissolved solids in the soil (TDS with RMSE= 0.212 g L-1 (0.35-2.47 g L-1) and R2= 0.77) and the reduction in water uptake by the roots due to osmotic stress, and is a very useful tool in the management and planning of irrigation and in predicting soil salinity risks.
description: Revista de Ciências Agrárias, vol. 43 n.º 2 (2020)
Conservative solutions to the black hole information problem
Creators: name: Hossenfelder, Sabine
name: Smolin, Lee
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We review the different options for resolution of the black hole loss of information problem. We classify them first into radical options, which require a quantum theory of gravity which has large deviations from semi-classical physics on macroscopic scales, such as non-locality or endowing horizons with special properties not seen in the semi-classical approximation, and conservative options, which do not need such help. Among the conservative options, we argue that restoring unitary evolution relies on elimination of singularities. We argue that this should hold also in the AdS/CFT correspondence.
description: 25 pages, 7 figures
Stock markets and quantum dynamics: a second quantized description
Creators: name: Bagarello, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Economics and business

description: In this paper we continue our descriptions of stock markets in terms of some non abelian operators which are used to describe the portfolio of the various traders and other {\em observable} quantities. After a first prototype model with only two traders, we discuss a more realistic model of market with an arbitrary number of traders. For both models we find approximated solutions for the time evolution of the portfolio of each trader. In particular, for the more realistic model, we use the {\em stochastic limit} approach and a {\em fixed point like} approximation.
Hyperfine structure and collisions in three-photon Rydberg electromagnetically induced transparency
Creators: name: Duspayev, Alisher
name: Raithel, Georg
Publisher: name: arXiv
Year: 2025
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Multi-photon electromagnetically-induced transparency (EIT) of atomic vapors involves several intermediate atomic levels. The sub-structure of these levels and their collisional interactions can drastically alter experimental EIT signals. Here, we report on hyperfine structure and collision effects in three-photon Rydberg EIT on the cascade $5S_{1/2} \rightarrow$ $5P_{1/2} \rightarrow 5D_{3/2}$ $\rightarrow 25F_{5/2}$ in a room temperature $^{85}$Rb vapor cell. In our measurements of EIT spectra, we identify two types of EIT signatures that correspond with distinct excitation pathways and atomic velocity classes in the atomic vapor. The $5D_{3/2}$ hyperfine structure and Autler-Townes splittings lead to complex patterns in the EIT spectra, which we analyze with the aid of 10-level EIT simulations. Adding 50~mTorr of Ar gas alters the EIT spectra and induces an additional, third EIT mode. Based on our simulation results, we attribute these changes to hyperfine collisions in the Rb $5D_{3/2}$ level. Our study may become useful in quantum technologies involving Rydberg EIT and hyperfine collisions in vapor cells, including non-invasive spatio-temporally resolved electric-field sensing of electric fields in low-pressure plasmas.
description: 9 pages, 4 figures
Supersonic Evershed flow outside Sunspots
Creators: name: Pillet, V. Martinez
name: Katsukawa, Y.
name: Puschmann, K. G.
name: Cobo, B. Ruiz
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on the discovery of mostly horizontal field channels just outside sunspot penumbrae (in the so-called `moat' region) that are seen to sustain supersonic flows (line-of-sight component of 6 km s{-1}). The spectral signature of these supersonic flows corresponds to circular polarization profiles with an additional, satellite, third lobe of the same sign as the parent sunspot' Stokes V blue lobe, for both downflows and upflows. This is consistent with an outward directed flow that we interpret as the continuation of the magnetized Evershed flow outside sunspots at supersonic speeds. In Stokes Q and U, a clear signature of a transverse field connecting the two flow streams is observed. Such an easily detectable spectral signature should allow for a clear identification of these horizontal field channels in other spectropolarimetric sunspot data. For the spot analyzed in this paper, a total of 5 channels with this spectral signature have been unambiguously found.
Determinação da salinidade e sodicidade do solo por métodos de indução eletromagnética
Creators: name: Paz, Ana Marta
name: Castanheira, Nádia
name: Gonçalves, Maria Conceição
name: Fernandes, Manuel
name: Pires, Fernando
name: Farzaminan, Mohammad
name: Paz, Maria Catarina
name: Santos, Fernando Monteiro
Publisher: name: Revista de Ciências Agrárias
Year: 2020

description: O excesso de sais solúveis na solução do solo (salinidade) ou o domínio do sódio no complexo de troca (sodicidade) são fenómenos que levam à degradação das funções do solo. É essencial monitorizar as áreas de risco de forma a prevenir ou mitigar os processos de salinização e os seus efeitos negativos. Os métodos de indução eletromagnética (EMI), aliados a algoritmos de inversão, têm sido usados para analisar o solo em profundidade, de forma não invasiva, medido a condutividade elétrica do solo (σ) a partir da sua superfície e permitindo medições de grandes áreas de forma eficiente e representativa. Neste trabalho analisaram-se quatro casos de estudo na Lezíria Grande de Vila Franca de Xira. Foram colhidas amostras de solo até uma profundidade de 135 cm para determinação laboratorial da condutividade elétrica do extrato de saturação (ECe), da percentagem de sódio de troca (ESP) e da razão de adsorção de sódio (SAR). Simultaneamente foram feitas medições de σ com um sensor EMI (EM38). Obteve-se boa correlação entre σ e ECe, SAR e ESP e foi possível classificar corretamente o solo quanto à salinidade e sodicidade em 88.6% das amostras.
description: Revista de Ciências Agrárias, vol. 43 n.º 2 (2020)
The novel common-mode ground vibrations
Creators: name: Chieh-Hung, Chen
Publisher: name: Zenodo
Year: 2020

description: The methodology and data availability for the analysis in the ground vibrations during the 2004 Parkfield, 2010 Baja, 2014 Jinggu, 2014 Ludian, 2016 Meinong, 2018 Hualien earthquakes. The amplitude of the ground vibrations at the particular B770 seismic station after the Meinong earthquake is shown in Figure S1. The enhancements of the ground vibrations at the example stations, the spatial distribution of the enhancements, and the determination of the source locations are shown in Figures S2–S4 for the Parkfield earthquake, Figures S5–S7 for the Baja earthquake, Figures S8–S10 for the Jinggu earthquake, Figures S11–S13 for the Ludian earthquake, and Figures S14–S16 for the Hualien earthquake. The amplitudes computed from the magnetic data could be dominated by the ground vibrations before the Meinong earthquakes are shown in Figures S17–18. The amplitudes computed from the magnetic data could be dominated by the ground vibrations before the Parkfield earthquakes are shown in Figures S19.
title: Wandel, Reform und Kritik der Volksschule: Ein diskursanalytischer Zugang
Creators: name: Brosziewski, Achim
name: Maeder, Christoph
Publisher: name: Publikationsserver der Pädagogischen Hochschule Thurgau
Year: 2013

description: Schweizerische Zeitschrift für Soziologie, vol. 39, no. 2, p. 187
The Formation of Massive Star Systems by Accretion
Creators: name: Krumholz, Mark R.
name: Klein, Richard I.
name: McKee, Christopher F.
name: Offner, Stella S. R.
name: Cunningham, Andrew J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive stars produce so much light that the radiation pressure they exert on the gas and dust around them is stronger than their gravitational attraction, a condition that has long been expected to prevent them from growing by accretion. We present three-dimensional radiation-hydrodynamic simulations of the collapse of a massive prestellar core and find that radiation pressure does not halt accretion. Instead, gravitational and Rayleigh-Taylor instabilities channel gas onto the star system through non-axisymmetric disks and filaments that self-shield against radiation, while allowing radiation to escape through optically-thin bubbles. Gravitational instabilities cause the disk to fragment and form a massive companion to the primary star. Radiation pressure does not limit stellar masses, but the instabilities that allow accretion to continue lead to small multiple systems.
description: Accepted by Science. 28 pages, 8 figures, Science manuscript format, includes both main text and supplementary online material. Figure resolution severely degraded to fit within size limits. For movie and full resolution figures, see http://www.ucolick.org/~krumholz/publications.html
An analysis of the role of the powerful woman in seven plays : Ghosts, Candida, The House of Bernarda Alba, The Maids, The Visit, The American Dream, The Homecoming
Creators: name: Johnson, Eric
Publisher: name: University of British Columbia
Year: 2011

description: This thesis is a study of a select group of women characters who appear prominently in several twentieth-century plays. It analyses the driving force which motivates the power-seeking woman, the methods by which she achieves her power, the type of power she acquires, and the effect it has on the other characters; it also attempts to clarify the specific concern of each playwright, ranging from exploitation of social questions to psychological analyses of role-playing. The characters examined are: Nora and Mrs. Alving in Henrik Ibsen's A Doll's House (l879) and Ghosts (l88l), Candida in Bernard Shaw's Candida (l895), Bernarda in Frederico Garcia Lorca's The House of Bernarda Alba (1936), the three maids in Jean Genet's The Maids (1947), Claire Zachanassian in Friedrich Duerrenmatt's The Visit (1956), Mommy in Edward Albee's The American Dream (1959), and Flora and Ruth respectively in Harold Pinter's A Slight Ache (1959) , and The Homecoming (1965). The study centres on this specific group of plays because a pattern emerges from them vhich reveals a basic change in the authors’ attitude to the women characters: in the earlier plays they are used as instruments for social criticism; in the later ones they appear in. less concrete and more symbolic or archetypal roles. The pattern also reveals the nature of the society which molds the women into positions of power, and the weak personalities of their partners which in turn forces them to adopt particularly aggressive roles. A clear-cut development emerges when the plays are examined chronologically. Initially, the playwrights are concerned with criticism of social issues: the hypocrisy of moral values perpetuated in middle class communities such as the one inhabited by Mrs. Alving, the shallowness of the so-called sanctity of late Victorian marriage, the stagnating effect of a claustrophobic society such as Spain's where rigid tradition functions as a repressing force which prevents individuals from developing their human potential. By the mid-twentieth century, this social critique has changed. The clearly defined social issues (the wife's subservience to the breadwinner husband, the woman's accepted role as empty-headed figurine, the impact of social custom) has become on the one hand a psychological assessment of an innate and timeless power struggle among three women as in Genet's The Maids; on the other hand it has developed into an archetypal situation such as in Pinter's The Homecoming, where Ruth takes on the role of mother-whore and A Slight Ache, where Flora quickly identifies her primal sensuality in the matchseller. Within eighty years the timebound criticism of woman's position in a, particular society has given room to the exploration of a timeless mythical pattern unbound by.social context.
Nuclear DVCS at small-x using the color dipole phenomenology
Creators: name: Machado, M. V. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the high energy color dipole formalism, we study the coherent and incoherent nuclear DVCS process in the small-x regime. We consider simple models for the elementary dipole-hadron scattering amplitude that captures main features of the dependence on atomic number A, on energy and on momentum transfer t. Using the obtained amplitudes we make predictions for the nuclear DVCS cross section at photon level in the collider kinematics.
description: 6 pages, 5 figures. Version to be published in European Physical Journal C
L-shell Photoionisation Cross Sections in the S^{+}, S^{2+}, S^{3+} Isonuclear Sequence
Creators: name: Mosnier, J. -P.
name: Kennedy, E. T.
name: Cubaynes, D.
name: Bizau, J. -M.
name: Guilbaud, S.
name: Blancard, C.
name: McLaughlin, B. M.
name: Hasoglu, M. F.
name: Gorczyca, T. W.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present absolute L-shell photoionisation cross sections for the S+, S2+, S3+ions. The cross sections were obtained using the monochromatised photon beam delivered by the SOLEIL synchrotron source coupled with an ion beam extracted from an electron cyclotron resonance source (ECRIS) in the merged dual-beam configuration. The cross sections for single, double and triple ionisation were measured and combined to generate total photoionisation cross sections. For each of the S+, S2+, S3+ ions, the photon energy regions corresponding to the excitation and ionisation of a 2p or a 2s electron (175-230 eV) were investigated. The experimental results are interpreted with the help of multiconfigurational Dirac-Fock (MCDF) and Breit-Pauli R-Matrix (BPRM) or Dirac R-Matrix (DARC) theoretical calculations. The former generates photoabsorption cross sections from eigenenergies and eigenfunctions obtained by solving variationally the multiconfiguration Dirac Hamiltonian while the latter calculate cross sections for photon scattering by atoms. The cross sectional spectra feature rich resonance structures with narrow natural widths (typically less than 100 meV) due to 2p to nd excitations below and up to the 2p thresholds. This behaviour is consistent with the large number of inner-shell states based on correlation and spin-orbit mixed configurations having three open subshells. Strong and wide (typically 1 eV) Rydberg series of resonances due to 2s to np excitations dominate above the 2p threshold.
description: Publishedin Journal of Physics B: Atomic, Molecular and Optical Physics
An invariant analytic orthonormalization procedure with applications
Creators: name: Bagarello, F.
name: Abdollahpour, M. R.
name: Triolo, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We apply the orthonormalization procedure previously introduced by two of us and adopted in connection with coherent states to Gabor frames and other examples. For instance, for Gabor frames we show how to construct $g(x)\in L^2(\Bbb{R})$ in such a way the functions $g_{\underline n}(x)=e^{ian_1x}g(x+an_2)$, $\underline n\in\Bbb{Z}^2$ and $a$ some positive real number, are mutually orthogonal. We discuss in some details the role of the lattice naturally associated to the procedure in this analysis.
Exchange interactions in europium monochalcogenide magnetic semiconductors and their dependence on hydrostatic strain
Creators: name: Söllinger, W.
name: Heiss, W.
name: Lechner, R. T.
name: Rumpf, K.
name: Granitzer, P.
name: Krenn, H.
name: Springholz, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The classical Heisenberg model is applied in a Monte Carlo study to investigate the distance dependence of the indirect nearest neighbor (NN) exchange and next-nearest neighbor (NNN) superexchange interaction in EuO, EuS, EuSe and EuTe. For this purpose, first, the dependence of the magnetic ordering temperature, i.e., Curie, respectively, Néel temperature for ferromagnetic and antiferromagnetic ordering on the exchange constants was determined. This was then employed for the analysis of experimental data of hydrostatic pressure experiments. It is shown that all experimental findings, i.e., the strong increase of the critical temperatures, as well as the transition from antiferromagnetic to ferromagnetic ordering for EuTe and EuSe with decreasing lattice parameter is well described by the magnetic Grüneisen law, in which the exchange constants depend on the interatomic distances of the Eu ions in the form of a power law. According to these calculations, the indirect NN exchange is characterized by a Grüneisen exponent of approximately 20 and the NNN superexchange by an exponent of about 10 for all four europium monochalcogenides. The latter agrees with Bloch's empirical 10/3 law for the volume dependence of superexchange interactions in insulating magnetic materials. The Monte Carlo calculations also yield significantly revised exchange constants for unstrained bulk material because spin fluctuations at non-zero temperatures are taken into account. The strong increase of the exchange constants with decreasing lattice parameter provides room for increasing the Curie temperatures in strained epitaxial structures, which is important for device applications.
description: 16 pages, 12 figures
Renormalizability of a quark-gluon model with soft BRST breaking in the infrared region
Creators: name: Baulieu, L.
name: Capri, M. A. L.
name: Gomez, A. J.
name: Lemes, V. E. R.
name: Sobreiro, R. F.
name: Sorella, S. P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove the renormalizability of a quark-gluon model with a soft breaking of the BRST symmetry, which accounts for the modification of the large distance behavior of the quark and gluon correlation functions. The proof is valid to all orders of perturbation theory, by making use of softly broken Ward identities.
description: 20 pages, no figures. Preprint number added in v2:
Biases on initial mass function determinations. III. Cluster masses derived from unresolved photometry
Creators: name: Apellániz, J. Maíz
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is currently common to use spatially unresolved multi-filter broad-band photometry to determine the masses of individual stellar clusters (and hence the cluster mass function, CMF). I analyze the stochastic effects introduced by the sampling of the stellar initial mass function (SIMF) in the derivation of the individual masses and the CMF and I establish that such effects are the largest contributor to the observational uncertainties. An analytical solution, valid in the limit where uncertainties are small, is provided to establish the range of cluster masses over which the CMF slope can be obtained with a given accuracy. The validity of the analytical solution is extended to higher mass uncertainties using Monte Carlo simulations and the Gamma approximation. The value of the Poisson mass is calculated for a large range of ages and a variety of filters for solar-metallicity clusters measured with single-filter photometry. A method that uses the code CHORIZOS is presented to simultaneously derive masses, ages, and extinctions. The classical method of using unweighted UBV photometry to simultaneously establish ages and extinctions of stellar clusters is found to be unreliable for clusters older than approx. 30 Ma, even for relatively large cluster masses. On the other hand, augmenting the filter set to include longer-wavelength filters and using weights for each filter increases the range of masses and ages that can be accurately measured with unresolved photometry. Nevertheless, a relatively large range of masses and ages is found to be dominated by SIMF sampling effects that render the observed masses useless, even when using UBVRIJHK photometry. A revision of some literature results affected by these effects is presented and possible solutions for future observations and analyses are suggested.
description: Acepted for publication in ApJ, 47 pages, 8 figues
Targeted Function Balancing
Creators: name: Wainstein, Leonard
name: Bai, He
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: This paper introduces Targeted Function Balancing (TFB), a covariate balancing weights framework for estimating the average treatment effect of a binary intervention. TFB first regresses an outcome on covariates, and then selects weights that balance functions (of the covariates) that are probabilistically near the resulting regression function. This yields balance in the regression function's predicted values and the covariates, with the regression function's estimated variance determining how much balance in the covariates is sufficient. Notably, TFB demonstrates that intentionally leaving imbalance in some covariates can increase efficiency without introducing bias, challenging traditions that warn against imbalance in any variable. Additionally, TFB is entirely defined by a regression function and its estimated variance, turning the problem of how best to balance the covariates into how best to model the outcome. Kernel regularized least squares (KRLS), the LASSO, and Bayesian Additive Regression Trees (BART) are considered as regression estimators. With KRLS, TFB contributes to the literature of kernel-based weights. As for the LASSO, TFB uses the regression function's estimated variance to prioritize balance in certain dimensions of the covariates, a feature that can be greatly exploited by choosing a sparse regression estimator. With BART, we demonstrate that TFB can apply regression estimators that do not have linear representations. The R Package tfb implements TFB.
Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection
Creators: name: Brask, Jonatan B.
name: Jiang, Liang
name: Gorshkov, Alexey V.
name: Vuletic, Vladan
name: Sorensen, Anders S.
name: Lukin, Mikhail D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum repeaters based on atomic ensemble quantum memories are promising candidates for achieving scalable distribution of entanglement over long distances. Recently, important experimental progress has been made towards their implementation. However, the entanglement rates and scalability of current approaches are limited by relatively low retrieval and single-photon detector efficiencies. We propose a scheme, which makes use of fluorescent detection of stored excitations to significantly increase the efficiency of connection and hence the rate. Practical performance and possible experimental realizations of the new protocol are discussed.
description: 4 pages, 3 figures
Turbulent Density Spectrum in Solar Wind Plasma
Creators: name: Shaikh, Dastgeer
name: Zank, G. P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Space Physics (physics.space-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The density fluctuation spectrum in the solar wind reveals a Kolmogorov-like scaling with a spectral slope of -5/3 in wavenumber space. The energy transfer process in the magnetized solar wind, characterized typically by MHD turbulence, over extended length-scales remains an unresolved paradox of modern turbulence theories, raising the question of how a compressible magnetofluid exhibits a turbulent spectrum that is characteristic of an incompressible hydrodynamic fluid. To address these questions, we have undertaken three-dimensional time dependent numerical simulations of a compressible magnetohydrodynamic fluid describing super-Alfvénic, supersonic and strongly magnetized plasma fluid. It is shown that a Kolmogorov-like density spectrum can develop by plasma motions that are dominated by Alfvénic cascades whereas compressive modes are dissipated.
description: Paper is to appear in Monthly Notices of the Royal Astronomical Society Main Journal
Beards of paradise
Creators: name: Lange, Christian
Publisher: name: Zenodo
Year: 2019

description: Preprint. For the published version, see Youri Volokhine, Bruce Fudge & Christoph Herzog (eds), Barbe et barbus - Symboliques, rites et pratiques du port de la barbe dans le Proche-Orient ancien et moderne (Berlin: Peter Lang Verlag, 2019), pp. 119-129 (DOI: https://doi.org/10.3726/b15078).
Het islamitische recht digitaal bekeken
Creators: name: Lange, Christian
Publisher: name: Zenodo
Year: 2019

description: Preprint. For the published version, see Joas Wagemakers & Lucien van Liere (Eds.), Wie is er bang voor religie? Waarom kennis van religie belangrijk is (Almere: Uitgeverij Parthenon, 2019), pp. 188-194.