cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-degree collisional moments of inelastic Maxwell mixtures. Application to the homogeneous cooling and uniform shear flow states
Creators: name: Romero, Constantino Sánchez
name: Garzó, Vicente
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Boltzmann equation for $d$-dimensional inelastic Maxwell models is considered to determine the collisional moments of second, third and fourth degree in a granular binary mixture. These collisional moments are exactly evaluated in terms of the velocity moments of the distribution function of each species when diffusion is absent (mass flux of each species vanishes). The corresponding associated eigenvalues as well as cross coefficients are obtained as functions of the coefficients of normal restitution and the parameters of the mixture (masses, diameters and composition). The results are applied to the analysis of the time evolution of the moments (scaled with a thermal speed) in two different nonequilibrium situations: the homogeneous cooling state (HCS) and the uniform (or simple) shear flow (USF) state. In the case of the HCS, in contrast to what happens for simple granular gases, it is shown that the third and fourth degree moments could diverge in time for given values of the parameters of the system. An exhaustive study on the influence of the parameter space of the mixture on the time behavior of these moments is carried out. Then, the time evolution of the second- and third-degree velocity moments in the USF is studied in the tracer limit (namely, when the concentration of one of the species is negligible). As expected, while the second-degree moments are always convergent, the third-degree moments of the tracer species can be also divergent in the long time limit.
description: 27 pages; 12 figures; the title and some parts of the paper have been changed
Optoelectronic and stability properties of quasi-2D alkylammonium based perovskites
Creators: name: Filipoiu, N.
name: Mirea, Anca G.
name: Derbali, Sarah
name: Pantis-Simut, C. -A.
name: Anghel, D. -V.
name: Manolescu, A.
name: Pintilie, Ioana
name: Florea, Mihaela
name: Nemnes, G. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic and stability properties of quasi-2D alkylammonium perovskites are investigated using density functional theory (DFT) calculations and validated experimentally on selected classes of compounds. Our analysis is focused on perovskite structures of formula (A)$_2$(A$'$)$_{n-1}$Pb$_n$X$_{3n+1}$, with large cations A = butyl-, pentyl-, hexylammonium (BA, PA, HXA), small cations A$'$ = methylammonium, formamidinium, ethylammonium, guanidinium (MA,FA,EA,GA) and halogens X = I, Br, Cl. The role of the halogen ions is outlined for the band structure, stability and defect formation energies. Two opposing trends are found for the absorption efficiency versus stability, the latter being assessed with respect to possible degradation mechanisms. Experimental validation is performed on quasi-2D perovskites based on pentylammonium cations, namely: (PA)$_2$PbX$_4$ and (PA)$_2$(MA)Pb$_2$X$_7$, synthesized by antisolvent-assisted vapor crystallization. Structural and optical analysis are inline with the DFT based calculations. In addition, the thermogravimetric analysis shows an enhanced stability of bromide and chloride based compounds, in agreement with the theoretical predictions.
description: 8 pages, 8 figures
Fragmentation of Molecular Clumps and Formation of Protocluster
Creators: name: Zhang, Qizhou
name: Wang, Ke
name: Lu, Xing
name: Jimenez-Serra, Izaskun
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Sufficiently massive clumps of molecular gas collapse under self-gravity and fragment to spawn a cluster of stars that have a range of masses. We investigate observationally the early stages of formation of a stellar cluster in a massive filamentary infrared dark cloud, G28.34+0.06 P1, in the 1.3mm continuum and spectral line emission using the ALMA. Sensitive continuum data reveal further fragmentation in five dusty cores at a resolution of several 10^3 AU. Spectral line emission from C18O, CH3OH, 13CS, H2CO and N2D+ are detected for the first time toward these dense cores. We found that three cores are chemically more evolved as compared with the other two; interestingly though, all of them are associated with collimated outflows as suggested by evidence from the CO, SiO, CH3OH, H2CO and SO emissions. The parsec-scale kinematics in NH3 exhibit velocity gradients along the filament, consistent with accretion flows toward the clumps and cores. The moderate luminosity and the chemical signatures indicate that the five cores harbor low- to intermediate-mass protostars that likely become massive ones at the end of the accretion. Despite the fact that the mass limit reached by the 1σdust continuum sensitivity is 30 times lower than the thermal Jeans mass, there is a lack of a distributed low-mass protostellar population in the clump. Our observations indicate that in a protocluster, low-mass stars form at a later stage after the birth of more massive protostars.
description: Accepted for publication in Astrophysical Journal
Testing hypotheses for the functions of APC family proteins using nulland truncation alleles in Drosophila
Creators: name: Peifer, Mark
name: Webb, Rebecca L.
name: Bejsovec, Amy
name: Holot, Lesley M.
name: Hayden, Melissa A.
name: Zhou, Mengning
name: McCartney, Brooke M.
name: Price, Meredith H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: (
Drosophila Niemann-Pick Type C-2 genes control sterol homeostasis and steroid biosynthesis: a model of human neurodegenerative disease
Creators: name: Buchanan, Jo Ann
name: Huang, Xun
name: Scott, Matthew P.
name: Warren, James T.
name: Gilbert, Lawrence I.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Mutations in either of the two human Niemann-Pick type C (NPC) genes,
Pressure induced metallization with absence of structural transition in layered MoSe2
Creators: name: Zhao, Zhao
name: Zhang, Haijun
name: Yuan, Hongtao
name: Wang, Shibing
name: Lin, Yu
name: Zeng, Qiaoshi
name: Xu, Gang
name: Liu, Zhenxian
name: Solanki, G. K.
name: Patel, K. D.
name: Cui, Yi
name: Hwang, Harold Y.
name: Mao, Wendy L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Layered transition-metal dichalcogenides have emerged as exciting material systems with atomically thin geometries and unique electronic properties. Pressure is a powerful tool for continuously tuning their crystal and electronic structures away from the pristine states. Here, we systematically investigated the pressurized behavior of MoSe2 up to ~ 60 GPa using multiple experimental techniques and ab -initio calculations. MoSe2 evolves from an anisotropic two-dimensional layered network to a three-dimensional structure without a structural transition, which is a complete contrast to MoS2. The role of the chalcogenide anions in stabilizing different layered patterns is underscored by our layer sliding calculations. MoSe2 possesses highly tunable transport properties under pressure, determined by the gradual narrowing of its band-gap followed by metallization. The continuous tuning of its electronic structure and band-gap in the range of visible light to infrared suggest possible energy-variable optoelectronics applications in pressurized transition-metal dichalcogenides.
description: Nature Communications in press
Enabled plays key roles in embryonic epithelial morphogenesis in Drosophila
Creators: name: Mahaffey, James P.
name: Gertler, Frank B.
name: Rogers, Stephen L.
name: Emerson, Mark
name: Van Vactor, David
name: Peifer, Mark
name: Sottile, Stephanie L.
name: Gates, Julie
name: Rogers, Edward M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Studies in cultured cells and in vitro have identified many actin regulators and begun to define their mechanisms of action. Among these are Enabled (Ena)/VASP proteins, anti-Capping proteins that influence fibroblast migration, growth cone motility, and keratinocyte cell adhesion in vitro. However, partially redundant family members in mammals and maternal Ena contribution in
[ePub] IRIDIUM descargar gratis
Creators: name: Turner
Publisher: name: Zenodo
Year: 2024

description: IRIDIUM de FRANCISCO CASTRO

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IRIDIUM

FRANCISCO CASTRO

Número de páginas: 108

Idioma: GALLEGO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788491511939

Editorial: GALAXIA

Año de edición: 2018

 

 

 

 

 

Ebook descargar gratis nederlands IRIDIUM

 

Overview

Iridium é unha historia de amor. Ou é unha historia de discriminacións e inxustizas. Ou é unha historia sobre a amizade máis aló das dificultades. Ou é unha historia sobre unha raíña do Instagram e un malote moi malo. Esta novela conta a historia de Iris,
Fission barriers heights in A$\sim$ 200 mass region
Creators: name: Mahata, K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Statistical model analysis has been carried out for $p$ and $α$ induced fission reactions using a consistent description for fission barrier and level density in A $\sim$ 200 mass region. A continuous damping of shell correction with excitation energy have been considered. Extracted fission barriers agree well with the recent microscopic-macroscopic model. The shell corrections at the saddle point were found to be not significant.
description: Pramana - J. Phys. (In press)
Polarized primordial gravitational waves in spatial covariant gravities
Creators: name: Zhu, Tao
name: Zhao, Wen
name: Wang, Anzhong
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The spatial covariant gravities provide a natural way to including odd-order spatial derivative terms into the gravitational action, which breaks the parity symmetry at gravitational sector. A lot of parity-violating scalar-tensor theories can be mapped to the spatial covariant framework by imposing the unitary gauge. This provides us with a general framework for exploring the parity-violating effects in primordial gravitational waves (PGWs). The main purpose of this paper is to investigate the polarization of PGWs in the spatial covariant gravities and their possible observational effects. To this end, we first construct the approximate analytical solution to the mode function of the PGWs during the slow-roll inflation by using the uniform asymptotic approximation. With the approximate solution, we calculate explicitly the power spectrum and the corresponding circular polarization of the PGWs analytically. It is shown that the new contributions to power spectrum from spatial covariant gravities contain two parts, one from the parity-preserving terms and the other from the parity-violating terms. While the parity-preserving terms can only affect the overall amplitudes of PGWs, the parity-violating terms induce nonzero circular polarization of PGWs, i.e., the left-hand and right-hand polarization modes of GWs have different amplitudes. The observational implications of this nonzero circular polarization is also briefly discussed.
description: 11 pages. arXiv admin note: text overlap with arXiv:1911.01580; v2: version to appear in PRD
[PDF] RESOLUCION DE PROBLEMAS PARA INGENIEROS CON PYTHON ESTRUCTURADO descargar gratis
Creators: name: Roberts
Publisher: name: Zenodo
Year: 2024

description: RESOLUCION DE PROBLEMAS PARA INGENIEROS CON PYTHON ESTRUCTURADO de ROSALIA PEÑA

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RESOLUCION DE PROBLEMAS PARA INGENIEROS CON PYTHON ESTRUCTURADO

ROSALIA PEÑA

Número de páginas: 360

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788416228713

Editorial: GARCETA GRUPO EDITORIAL

Año de edición: 2016

 

 

 

 

 

Mobi descarga libros RESOLUCION DE PROBLEMAS PARA INGENIEROS CON PYTHON ESTRUCTURADO 9788416228713 (Spanish Edition) de ROSALIA PEÑA

 

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Computational modeling of the class I low-mass protostar Elias 29 applying optical constants of ices processed by high energy cosmic ray analogs
Creators: name: Rocha, W. R. M.
name: Pilling, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the study of the effects of high energy cosmic rays (CRs) over the astrophysical ices, observed toward the embedded class I protostar Elias 29, by using computational modeling and laboratory data. Its spectrum was observed with {\it Infrared Space Observatory - ISO}, covering 2.3 - 190 $μ$m. The modeling employed the three-dimensional Monte Carlo radiative transfer code RADMC-3D (Dullemond et al. 2012) and laboratory data of bombarded ice grains by CRs analogs, and unprocessed ices (not bombarded). We are assuming that Elias 29 has a self-irradiated disk with inclination $i =$ 60$^{\circ}$, surrounded by an envelope with bipolar cavity. The results show that absorption features toward Elias 29, are better reproduced by assuming a combination between unprocessed astrophysical ices at low temperature (H$_2$O, CO, CO$_2$) and bombarded ices (H$_2$O:CO$_2$) by high energy CRs. Evidences of the ice processing around Elias 29 can be observed by the good fitting around 5.5-8.0 $μ$m, by polar and apolar ice segregation in 15.15-15.25 $μ$m, and by presence of the CH$_4$ and HCOOH ices. Given that non-nitrogen compounds were employed in this work, we assume that absorption around 5.5-8.0 $μ$m should not be associated with NH$_4^+$ ion (Shutte & Khanna2003), but more probably with aliphatic ethers (e.g. R1-OCH$_2$-R2), CH$_3$CHO and related species. The results obtained in this paper are important, because they show that the environment around protostars is better modeled considering processed samples and, consequently, demonstrates the chemical evolution of the astrophysical ices.
description: 51 pages, 16 figures, 4 tables
LA MUJER QUE TOMO VENENO leer epub gratis
Creators: name: Velazquez
Publisher: name: Zenodo
Year: 2024

description: LA MUJER QUE TOMO VENENO de HOMEI IWANO

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LA MUJER QUE TOMO VENENO

HOMEI IWANO

Número de páginas: 256

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788417419196

Editorial: SATORI

Año de edición: 2019

 

 

 

 

 

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Overview

Yoshio Tamura, escritor y padre de familia, se siente atrapado en un sistema, el del Japón de la era Meiji, según el cual el cometido de la mujer es procrear y obedecer, y el del hombre, trabajar y proveer, y donde ambos no son más que un simple engranaje de la gran familia nacional. Yoshio conoce a una geisha que no es demasiado guapa ni lista, que no baila ni canta bien y además es mentirosa y maleducada, pero termina enamorándose de ella y esta atormentada relación pondrá patas arriba todo su mundo. En "La mujer que tomó veneno", Homei retrata una época fronteriza de grandes tensiones espirituales en la que los cimientos de la realidad japonesa, tal y como se conocía hasta entonces, estaban siendo socavados, y el progreso occidental comenzaba a resultar decepcionante...
QUEMAR DESPUES DE ESCRIBIR (EDICION OFICIAL) leer epub gratis
Creators: name: Arruda
Publisher: name: Zenodo
Year: 2024

description: QUEMAR DESPUES DE ESCRIBIR (EDICION OFICIAL) de SHARON JONES

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QUEMAR DESPUES DE ESCRIBIR (EDICION OFICIAL)

SHARON JONES

Número de páginas: 168

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788491297413

Editorial: SUMA

Año de edición: 2022

 

 

 

 

 

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Overview

¡Descubre el diario creativo que arrasa en TikTok!Un fenómeno internacional imparable. YA VAN 1.000.000 DE EJEMPLARES QUEMADOS. ¿HASTA QUÉ PUNTO ERES CAPAZ DE SINCERARTE CUANDO NADIE TE VE? Instagram, Twitter, TikTok, YouTube, Facebook, Twitch, Snapchat... El mundo se ha convertido en un escenario gigante en el que tenemos compartirlo absolutamente todo.Quemar despues de escribir te desafía a hacer lo contrario: no enseñes nada. A traves de preguntas incisivas y retos, este diario privado te propone un juego de Verdad o Atrevimiento en el que únicamente participarás tú.Supera tus límites, reflexiona sobre tu pasado, tu presente y tu futuro, y crea un libro secreto sobre ti y solo para ti. Y, cuando hayas terminado, tíralo, escóndelo... o quemalo. Los lectores opinan..."Es un buen libro para plasmar y descubrir cosas que uno ni te imaginas de ti mismo." "Escondí el libro en cuanto lo termine, no se si por temor a que alguien lo viera o por lo sorprendida (y un poco avergonzada) que estaba de la honestidad que había en mis respuestas." "Me ha ayudado a entenderme mejor y a liberarme." "Las preguntas son muy divertidas y, además, te provocan para que
(2969) Lewis Shand Leith Fyfe
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Minisuperspace Quantum Cosmology from the Einstein-Cartan Path Integral
Creators: name: Isichei, Raymond
name: Magueijo, João
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive the fixed-$Λ$ and unimodular propagators using the path integral formalism as applied to the Einstein-Cartan action. The simplicity of the action (which is linear in the lapse function) allows for an exact integration starting from the lapse function and the enforcement of the Hamiltonian constraint, leading to a product of Chern-Simons states if the connection is fixed at the endpoints. No saddle point approximation is needed. Should the metric be fixed at the endpoints, then, depending on the contour chosen for the connection, Hartle-Hawking or Vilenkin propagators are obtained. Thus, in this approach one trades a choice of contour in the lapse function for one in the connection, where appropriate. The unimodular propagators are also trivial to obtain via the path integral, and the previously derived expressions are recovered.
Phylogeny of crop species from Domestication impacts on plant-herbivore interactions: a meta-analysis..
Creators: name: Whitehead, Susan R.
name: Turcotte, Martin M.
name: Poveda, Katja
Publisher: name: The Royal Society
Year: 2016
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Crop phylogeny in newick format. For use with analysis code to conduct phylogenetically-controlled meta-analyses.
Diaphanous regulates myosin and adherens junctions to control cell contractility and protrusive behavior during morphogenesis
Creators: name: Homem, Catarina C.F.
name: Peifer, Mark
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Formins are key regulators of actin nucleation and elongation. Diaphanous-related formins, the best-known subclass, are activated by Rho and play essential roles in cytokinesis. In cultured cells, Diaphanous-related formins also regulate cell adhesion, polarity and microtubules, suggesting that they may be key regulators of cell shape change and migration during development. However, their essential roles in cytokinesis hamper our ability to test this hypothesis. We used loss- and gain-of-function approaches to examine the role of Diaphanous in
Customized Complex Fertilizers for Transgenic Bt-Cotton Hybrids Grown on Rainfed Vertisols
Creators: name: Manikandan, Angamuthu
name: Blaise, Desouza
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Plant Biology

description: Response of transgenic Bt-cotton hybrids to customized complex fertilizer (CCF) grades was evaluated on rainfed Vertisols. In 2017–18, six treatments, namely, recommended dose of fertilizers (RDF), 1.2 times the RDF (1.2 RDF), physical mix of single nutrient fertilizers (PMF), CCF containing NPKS, farmers practice (FP), and the zero fertilizer control (CON) were evaluated. In 2018–19, 11 treatments, muriate of potash (MOP) and sulfate of potash (SOP) based CCFs equivalent to RDF, RDF+10% more K and RDF-10% less K, RDF, 1.2 RDF, soil test based PMF, FP, and CON were evaluated. Seedcotton yield (SCY) with CCF did not differ with the RDF and PMF in 2017. In 2018, the average yield of the RDF treatments (1902 kg ha−1) was significantly lower than the average of the CCF treatments (2407 kg ha−1). Among the CCF treatments, the MOP-based CCF (2553 kg ha−1) did not differ with the SOP-based CCF (2387 kg ha−1). Fiber quality was unchanged with the fertilizer treatments. However, compared to the present FP, the benefit to cost and the marginal cost-benefit ratio (MCBR) was greater with the CCF than the FP. MCBR was greater with the MOP-based CCF than the SOP based. Our results highlight the benefit of CCF for rainfed cotton production.
Some inequalities for the trigamma function in terms of the digamma function
Creators: name: Qi, Feng
name: Mortici, Cristinel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 33B15, Secondary 26A48, 26D15, 26D20

description: In the paper, the authors establish three kinds of double inequalities for the trigamma function in terms of the exponential function to powers of the digamma function. These newly established inequalities extend some known results. The method in the paper utilizes some facts from the asymptotic theory and is a natural way to solve problems for approximating some quantities for large values of the variable.
description: 13 pages
{pdf download} Fascicule des conditions de levée de dormance des plantes bio-indicatrices
Creators: name: Long
Publisher: name: Zenodo
Year: 2024

description: Fascicule des conditions de levée de dormance des plantes bio-indicatrices pan Gérard Ducerf

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Fascicule des conditions de levée de dormance des plantes bio-indicatrices

Gérard Ducerf

Nb. de pages: 40

Format: Pdf, ePub, MOBI, FB2

ISBN: 9791091115018

Editeur: Promonature

Date de parution: 2015

 

 

 

Livres audio gratuits à télécharger sur iTunes Fascicule des conditions de levée de dormance des plantes bio-indicatrices (Litterature Francaise) par Gérard Ducerf DJVU PDB FB2 9791091115018

 

Overview
Adjoint optimization of polarization-splitting grating couplers
Creators: name: Sun, Peng
name: Van Vaerenbergh, Thomas
name: Hooten, Sean
name: Beausoleil, Raymond
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have designed a polarization-splitting grating coupler (PSGC) in silicon-oninsulator (SOI) that has 1.2 dB peak loss in numerical simulations, which is the best simulated performance of PSGCs without a bottom reflector to the best of our knowledge. Adjoint method-based shape optimization enables us to explore complex geometries that are intractable with conventional design approaches. Physics-based process-independent knowledge of PSGCs is extracted from the adjoint optimization and can be transferred to other platforms with a minimum of effort.
description: 15 pages, 17 figures
ENGLISH FILE 4TH EDITION A1/A2. STUDENT S BOOK AND WORKBOOK WITH KEY PACK  ePub gratis
Creators: name: Thibodaux
Publisher: name: Zenodo
Year: 2024

description: ENGLISH FILE 4TH EDITION A1/A2. STUDENT S BOOK AND WORKBOOK WITH KEY PACK de

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ENGLISH FILE 4TH EDITION A1/A2. STUDENT S BOOK AND WORKBOOK WITH KEY PACK

 

Idioma: INGLÉS

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9780194058001

Editorial: OXFORD UNIVERSITY PRESS

Año de edición: 2019

 

 

 

 

 

Descargar desde google books como pdf ENGLISH FILE 4TH EDITION A1/A2. STUDENT S BOOK AND WORKBOOK WITH KEY PACK in Spanish 9780194058001 iBook DJVU RTF

 

Overview
On the classical Integrability of Poisson-Lie T-dual WZW models
Creators: name: Bascone, Francesco
name: Pezzella, Franco
name: Vitale, Patrizia
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the integrability of a two-parameter deformation of the Wess-Zumino-Witten model, previously introduced in relation with Poisson-Lie T-duality. The resulting family of Poisson-Lie dual models is shown to be integrable by using the Maillet r/s formalism.
description: 20 pages
Oxygen and iron in interstellar dust: an X-ray investigation
Creators: name: Psaradaki, I.
name: Costantini, E.
name: Rogantini, D.
name: Mehdipour, M.
name: Corrales, L.
name: Zeegers, S. T.
name: de Groot, F.
name: Herder, J. W. A. den
name: Mutschke, M.
name: Trasobares, S.
name: de Vries, C. P.
name: Waters, L. B. F. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Understanding the chemistry of the interstellar medium (ISM) is fundamental for the comprehension of the Galactic and stellar evolution. X-rays provide an excellent way to study the dust chemical composition and crystallinity along different sight-lines in the Galaxy. In this work we study the dust grain chemistry in the diffuse regions of the interstellar medium in the soft X-ray band (<1 keV). We use newly calculated X-ray dust extinction cross sections, obtained from laboratory data, in order to investigate the oxygen K and iron L shell absorption. We explore the XMM-Newton and Chandra spectra of 5 low-mass X-ray binaries located in the Galactic plane, and we model the gas and dust features of oxygen and iron simultaneously. The dust samples used for this study include silicates with different Mg:Fe ratios, sulfides, iron oxides and metallic iron. Most dust samples are in both amorphous and crystalline lattice configuration. The extinction cross sections have been computed using Mie scattering approximation and assuming a power law dust size distribution. We find that the Mg-rich amorphous pyroxene (Mg0.75Fe0.25SiO3) represents the largest fraction of dust towards most of the X-ray sources, about 70% on average. Additionally, we find that ~15% of the dust column density in our lines of sight is in Fe metallic. We do not find strong evidence for ferromagnetic compounds, such as Fe3O4 or iron sulfides (FeS, FeS2). Our study confirms that the iron is heavily depleted from the gas phase into solids; more than 90% of iron is in dust. The depletion of neutral oxygen is mild, between 10-20% depending on the line of sight.
description: A&A accepted, 13 pages, 5 figures
Associated R code for statistical analyses from Domestication impacts on plant-herbivore interactions: a meta-analysis..
Creators: name: Whitehead, Susan R.
name: Turcotte, Martin M.
name: Poveda, Katja
Publisher: name: The Royal Society
Year: 2016
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: For millennia, humans have imposed strong selection on domesticated crops, resulting in drastically altered crop phenotypes compared with wild ancestors. Crop yields have increased, but a long-held hypothesis is that domestication has also unintentionally decreased plant defences against herbivores. To test this hypothesis, we conducted a phylogenetically controlled meta-analysis comparing insect herbivore resistance and putative plant defence traits between crops and their wild relatives. Our database included 2098 comparisons made across 73 crops in 89 studies. We found that domestication consistently reduced plant resistance to herbivores, although the magnitude of the effects varied across plant organs and depending on how resistance was measured. However, domestication had no consistent effects on the specific plant defence traits underlying resistance, including secondary metabolites and physical feeding barriers. The values of these traits sometimes increased and sometimes decreased during domestication. Consistent negative effects of domestication were observed only when defence traits were measured in reproductive organs or in the plant organ that was harvested. These results highlight the complexity of evolution under domestication and the need for an improved theoretical understanding of the mechanisms through which agronomic selection can influence the species interactions that impact both the yield and sustainability of our food systems.This article is part of the themed issue 'Human influences on evolution, and the ecological and societal consequences'.
(2971) McDuff Fyfe
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Supplementary Dataset 1 from In situ developmental responses of tropical sea urchin embryos to ocean acidification conditions at naturally elevated pCO2 vent sites..
Creators: name: Lamare, Miles
name: Liddy, Michelle
name: Uthicke, Sven
Publisher: name: The Royal Society
Year: 2016
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences
subject: Developmental Biology

description: Experiment 1 Larval Measurements
(2973) Herbert Stanhope Baines
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
COCONUT, a novel fast-converging MHD model for solar corona simulations: II. Assessing the impact of the input magnetic map on space-weather forecasting at minimum of activity
Creators: name: Perri, Barbara
name: Kuzma, Blazej
name: Brchnelova, Michaela
name: Baratashvili, Tinatin
name: Zhang, Fan
name: Leitner, Peter
name: Lani, Andrea
name: Poedts, Stefaan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: This paper is dedicated to the new implicit unstructured coronal code COCONUT, which aims at providing fast and accurate inputs for space weather forecast as an alternative to empirical models. We use all 20 available magnetic maps of the solar photosphere covering the date of the 2nd of July 2019 which corresponds to a solar eclipse on Earth. We use the same standard pre-processing on all maps, then perform coronal MHD simulations with the same numerical and physical parameters. In the end, we quantify the performance for each map using three indicators from remote-sensing observations: white-light total solar eclipse images for the streamers' edges, EUV synoptic maps for coronal holes and white-light coronagraph images for the heliospheric current sheet. We discuss the performance for space weather forecasts and we show that the choice of the input magnetic map has a strong impact. We find performances between 24% to 85% for the streamers' edges, 24% to 88% for the coronal hole boundaries and a mean deviation between 4 to 12 degrees for the heliospheric current sheet position. We find that the HMI runs are globally performing better on all indicators, with the GONG-ADAPT being the second-best choice. HMI runs perform better for the streamers' edges, GONG-ADAPT for polar coronal holes, HMI synchronic for equatorial coronal holes and for the streamer belt. We especially showcase the importance of the filling of the poles. This demonstrates that the solar poles have to be taken into account even for ecliptic plane previsions.
description: 27 pages, 11 figures, Accepted in ApJ
Descargar PDF RENEGADOS
Creators: name: Ballweg
Publisher: name: Zenodo
Year: 2024

description: RENEGADOS de MARISSA MEYER

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RENEGADOS

MARISSA MEYER

Número de páginas: 624

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788417390570

Editorial: HIDRA

Año de edición: 2018

 

 

 

 

 

Libro electrónico gratuito en línea para descargar RENEGADOS en español de MARISSA MEYER

 

Overview

Identidades secretas. Poderes extraordinarios. Ella busca venganza. Él quiere justicia.Los Renegados son un grupo de prodigios, humanos con habilidades extraordinarias, que emergieron de las ruinas de una sociedad que se había desmoronado y establecieron la paz y el orden allí donde reinaba el caos. Como campeones de la justicia, continúan siendo un símbolo de esperanza y valor para todo el mundo... excepto para los villanos a los que una vez derrotaron. Nova tiene una razón de peso para odiar a esos Renegados, y quiere venganza. Mientras se acerca cada vez más a su objetivo, conocerá a Adrian, un Renegado que cree en la justicia, y en Nova. Pero Nova solo le es leal a los villanos, y ellos, además, tienen el poder suficiente como para acabar con ambos.
Light bullets in Su-Schrieffer-Heeger photonic topological insulators
Creators: name: Ivanov, Sergey K.
name: Kartashov, Yaroslav V.
name: Torner, Lluis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We introduce a different class of thresholdless three-dimensional soliton states that form in higher-order topological insulators based on a two-dimensional Su-Schrieffer-Heeger array of coupled waveguides. The linear spectrum of such structures is characterized by the presence of a topological gap with corner states residing in them. We find that a focusing Kerr nonlinearity allows families of light bullets bifurcating from the linear corner states to exist as stable three-dimensional solitons, which inherit topological protection from their linear corner counterparts and, remarkably, survive even in the presence of considerable disorder. The light bullets exhibit a spatial localization degree that depends strongly on the array dimerization and may feature large temporal widths in the topological gap near the bifurcation point, thus drastically reducing the otherwise strong instabilities caused by higher-order effects.
(2970) Elizabeth Ferguson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A sharp threshold for a modified bootstrap percolation with recovery
Creators: name: Coker, Tom
name: Gunderson, Karen
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60K35, 68Q80

description: Bootstrap percolation is a type of cellular automaton on graphs, introduced as a simple model of the dynamics of ferromagnetism. Vertices in a graph can be in one of two states: `healthy' or `infected' and from an initial configuration of states, healthy vertices become infected by local rules. While the usual bootstrap processes are monotone in the sets of infected vertices, in this paper, a modification is examined in which infected vertices can return to a healthy state. Vertices are initially infected independently at random and the central question is whether all vertices eventually become infected. The model examined here is such a process on a square grid for which healthy vertices with at least two infected neighbours become infected and infected vertices with no infected neighbours become healthy. Sharp thresholds are given for the critical probability of initial infections for all vertices eventually to become infected.
description: 45 pages
A gain-of-function mutation in IAA18 alters Arabidopsis embryonic apical patterning
Creators: name: Wu, Miin Feng
name: Ploense, Sara E.
name: Nagpal, Punita
name: Reed, Jason W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Lateral organ emergence in plant embryos and meristems depends on spatially coordinated auxin transport and auxin response. Here, we report the gain-of-function iaa18-1 mutation in Arabidopsis, which stabilizes the Aux/IAA protein IAA18 and causes aberrant cotyledon placement in embryos. IAA18 was expressed in the apical domain of globular stage embryos, and in the shoot apical meristem and adaxial domain of cotyledons of heart stage embryos. Mutant globular embryos had asymmetric PIN1:GFP expression in the apical domain, indicating that IAA18-1 disrupts auxin transport. Genetic interactions among iaa18-1, loss-of-function mutations in ARF (Auxin response factor) genes and ARF-overexpressing constructs suggest that IAA18-1 inhibits activity of MP/ARF5 and other ARF proteins in the apical domain. The iaa18-1 mutation also increased the frequency of rootless seedlings in mutant backgrounds in which auxin regulation of basal pole development was affected. These results indicate that apical patterning requires Aux/IAA protein turnover, and that apical domain auxin response also influences root formation.
Exceptional points in coupled dissipative dynamical systems
Creators: name: Ryu, Jung-Wan
name: Son, Woo-Sik
name: Hwang, Dong-Uk
name: Lee, Soo-Young
name: Kim, Sang Wook
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the transient behavior in coupled dissipative dynamical systems based on the linear analysis around the steady state. We find that the transient time is minimized at a specific set of system parameters and show that at this parameter set, two eigenvalues and two eigenvectors of Jacobian matrix coalesce at the same time, this degenerate point is called the exceptional point. For the case of coupled limit cycle oscillators, we investigate the transient behavior into the amplitude death state, and clarify that the exceptional point is associated with a critical point of frequency locking, as well as the transition of the envelope oscillation.
description: 6 pages, 7 figures
A quasi-linear analysis of the impurity effect on turbulent momentum transport and residual stress
Creators: name: Ko, S. H.
name: Jhang, Hogun
name: Singh, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the impact of impurities on turbulence driven intrinsic rotation (via residual stress) in the context of the quasi-linear theory. A two-fluid formulation for main and impurity ions is employed to study ion temperature gradient modes in sheared slab geometry modified by the presence of impurities. An effective form of the parallel Reynolds stress is derived in the center of mass frame of a coupled main ion-impurity system. Analyses show that the contents and the radial profile of impurities have a strong influence on the residual stress. In particular, an impurity profile aligned with that of main ions is shown to cause a considerable reduction of the residual stress, which may lead to the reduction of turbulence driven intrinsic rotation.
Motivational Factors Affecting Success in the Implementation of Good Governance Administration for the Personnel of Sakon Nakhon Provincial Administrative Organization
Creators: name: Jirunda Boonbunjong
Publisher: name: DR.KEN Institute of Academic Development and Promotion
Year: 2022
Subjects: Motivational Factors
Good Governance administration
Provincial Administrative Organization

description: Interdisciplinary Academic and Research Journal, 2, 5, 181-200
(2965) Mary [Fison]
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A new model for random X chromosome inactivation
Creators: name: Magnuson, Terry
name: Starmer, Joshua
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: X chromosome inactivation (XCI) reduces the number of actively transcribed X chromosomes to one per diploid set of autosomes, allowing for dosage equality between the sexes. In eutherians, the inactive X chromosome in XX females is randomly selected. The mechanisms for determining both how many X chromosomes are present and which to inactivate are unknown. To understand these mechanisms, researchers have created X chromosome mutations and transgenes. Here, we introduce a new model of X chromosome inactivation that aims to account for the findings in recent studies, to promote a re-interpretation of existing data and to direct future experiments.
Cascading Quantum Light-Matter Interfaces
Creators: name: Namazi, Mehdi
name: Mittiga, Thomas
name: Kupchak, Connor
name: Figueroa, Eden
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ability to interface multiple optical quantum devices is a key milestone towards the development of future quantum networks that are capable of sharing and processing quantum information encoded in light. One of the requirements for any node of these quantum networks will be cascadability, i.e. the ability to drive the input of a node using the output of another node. Here, we report the cascading of quantum light-matter interfaces by storing few-photon level pulses of light in warm vapor followed by the subsequent storage of the retrieved field onto a second ensemble. We demonstrate that even after the sequential storage, the final signal-to-background ratio can remain greater than 1 for weak pulses containing 8 input photons on average.
description: 5 pages, 5 figures
Supplementary Figure 1 from In situ developmental responses of tropical sea urchin embryos to ocean acidification conditions at naturally elevated pCO2 vent sites..
Creators: name: Lamare, Miles
name: Liddy, Michelle
name: Uthicke, Sven
Publisher: name: The Royal Society
Year: 2016
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences
subject: Developmental Biology

description: Seawater pH(T) measurements at control and vent sites for Dobu Island (A) and Upu-Upasina (B). Measurements are made using a seaFET pH/temperature logger that was moored at 2 - 3 m depth
Stability of the Néel quantum critical point in the presence of Dirac fermions
Creators: name: Hu, Huanzhi
name: Lin, Jennifer
name: Uryszek, Mikolaj D.
name: Krüger, Frank
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the stability of the Néel quantum critical point of two-dimensional quantum antiferromagnets, described by a non-linear $σ$ model (NL$σ$M), in the presence of a Kondo coupling to $N_f$ flavours of two-component Dirac fermion fields. The long-wavelength order parameter fluctuations are subject to Landau damping by electronic particle-hole fluctuations. Using momentum-shell RG, we demonstrate that the Landau damping is weakly irrelevant at the Néel quantum critical point, despite the fact that the corresponding self-energy correction dominates over the quadratic gradient terms in the IR limit. In the ordered phase, the Landau damping increases under the RG, indicative of damped spin-wave excitations. Although the Kondo coupling is weakly relevant, sufficiently strong Landau damping renders the Néel quantum critical point quasi-stable for $N_f\ge 4$ and thermodynamically stable for $N_f<4$. In the latter case, we identify a new multi-critical point which describes the transition between the Néel critical and Kondo run-away regimes. The symmetry breaking at this fixed point results in the opening of a gap in the Dirac fermion spectrum. Approaching the multi-critical point from the disordered phase, the fermionic quasiparticle residue vanishes, giving rise to non-Fermi-liquid behavior.
description: 9 pages, 5 figures, accepted version