cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supplementary Material and Methods from Nutritional geometry of paternal effects on embryo mortality
Creators: name: Polak, Michal
name: Simmons, Leigh W.
name: Benoit, Joshua B.
name: Ruohonen, Kari
name: Simpson, Stephen J.
name: Solon-Biet, Samantha M.
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 60801 Animal Behaviour

description: Well-established causal links exist between maternal nutritional deficits and embryo health and viability. By contrast, environmental effects operating through the father that could influence embryo mortality have seldom been examined. Yet, ejaculates can require nontrivial resource allocation, and seminal plasma components are increasingly recognized to exert wide-ranging effects on females and offspring, so paternal dietary effects on the embryo should be expected. We test for effects of varying levels of protein (P), carbohydrate (C) and caloric load in adult male diet on embryo mortality in Drosophila melanogaster. We demonstrate that macronutrient balance and caloric restriction exert significant effects, and that nutritional effects are more impactful when a prior mating has occurred. Once-mated males produced embryos with marginally elevated mortality under high-caloric densities and a 1 : 8 P : C ratio. In contrast, embryos produced by twice-mated males were significantly more likely to die under male caloric restriction, an outcome that may have resulted from shifts in ejaculate quality and/or epigenetic paternal effects. Body nutrient reserves were strongly and predictably altered by diet, and body condition, in turn, was negatively related to embryo mortality. Thus, sire nutritional history and resultant shifts in metabolic state predict embryo viability and post-fertilization fitness outcomes.
Additional file 2 of Knockout of a key gene of the nicotine biosynthetic pathway severely affects tobacco growth under field, but not greenhouse conditions
Creators: name: Smith, William A.
name: Matsuba, Yuki
name: Dewey, Ralph E.
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 2: Table S2. Sequences most closely related to QPT2 target sequence in the TN90 reference genome as determined by Cas-OFFinder.
Descargar [PDF] {EPUB} UNA CORTE DE ALAS Y RUINA (UNA CORTE DE ROSAS Y ESPINAS 3)
Creators: name: Nation
Publisher: name: Zenodo
Year: 2024

description: UNA CORTE DE ALAS Y RUINA (UNA CORTE DE ROSAS Y ESPINAS 3) de SARAH J. MAAS

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UNA CORTE DE ALAS Y RUINA (UNA CORTE DE ROSAS Y ESPINAS 3)

SARAH J. MAAS

Número de páginas: 672

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788408178699

Editorial: PLANETA

Año de edición: 2017

 

 

 

 

 

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Overview

 

La magia de La Bella y la Bestia con la fuerza de George R.R. Martin.Tercera parte de Una corte de rosas y espinas.

Feyre ha vuelto a la Corte Primavera decidida a desvelar las artimañas de Tamlin y las razones del rey que amenaza Prythian. Pero para hacerlo, tendrá que jugar al mortal juego del engaño… un solo paso en falso podría condenarla, no solo a ella sino a todo su mundo. La guerra se cierne sobre todos, y Feyre tendrá que elegir muy bien en quién confiar.
(3057) Hilda Marguerite Nicholson
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.
Table S5 from Diatoms dominate the eukaryotic metatranscriptome during spring in coastal ‘dead zone’ sediments.
Creators: name: Broman, Elias
name: Sachpazidou, Varvara
name: Dopson, Mark
name: Hylander, Samuel
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: An important characteristic of marine sediments is the oxygen concentration that affects many central metabolic processes. There has been a widespread increase in hypoxia in coastal systems (referred to as ‘dead zones’) mainly caused by eutrophication. Hence, it is central to understand the metabolism and ecology of eukaryotic life in sediments during changing oxygen conditions. Therefore, we sampled coastal ‘dead zone’ Baltic Sea sediment during autumn and spring, and analysed the eukaryotic metatranscriptome from field samples and after incubation in the dark under oxic or anoxic conditions. Bacillariophyta (diatoms) dominated the eukaryotic metatranscriptome in spring and were also abundant during autumn. A large fraction of the diatom RNA reads was associated with the photosystems suggesting a constitutive expression in darkness. Microscope observation showed intact diatom cells and these would, if hatched, represent a significant part of the pelagic phytoplankton biomass. Oxygenation did not significantly change the relative proportion of diatoms nor resulted in any major shifts in metabolic ‘signatures’. By contrast, diatoms rapidly responded when exposed to light suggesting that light is limiting diatom development in hypoxic sediments. Hence, it is suggested that diatoms in hypoxic sediments are on ‘standby’ to exploit the environment if they reach suitable habitats.
Robust estimation and inference for heavy tailed GARCH
Creators: name: Hill, Jonathan B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: We develop two new estimators for a general class of stationary GARCH models with possibly heavy tailed asymmetrically distributed errors, covering processes with symmetric and asymmetric feedback like GARCH, Asymmetric GARCH, VGARCH and Quadratic GARCH. The first estimator arises from negligibly trimming QML criterion equations according to error extremes. The second imbeds negligibly transformed errors into QML score equations for a Method of Moments estimator. In this case, we exploit a sub-class of redescending transforms that includes tail-trimming and functions popular in the robust estimation literature, and we re-center the transformed errors to minimize small sample bias. The negligible transforms allow both identification of the true parameter and asymptotic normality. We present a consistent estimator of the covariance matrix that permits classic inference without knowledge of the rate of convergence. A simulation study shows both of our estimators trump existing ones for sharpness and approximate normality including QML, Log-LAD, and two types of non-Gaussian QML (Laplace and Power-Law). Finally, we apply the tail-trimmed QML estimator to financial data.
(3051) Susanna [Charlton]
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.
Disentangling the effects of climate and people on Sahel vegetation dynamics
Creators: name: Seaquist, J. W.
name: Eklundh, L.
name: Ardö, J.
name: Heumann, B. W.
name: Hickler, T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The Sahel belt of Africa has been the focus of intensive scientific research since the 1960s, spurred on by the chronic vulnerability of its population to recurring drought and the threat of long-term land degradation. But satellite sensors have recently shown that much of the region has experienced significant increases in photosynthetic activity since the early 1980s, thus re-energizing long-standing debates about the role that people play in shaping land surface status, and thus climate at regional scales. In this paper, we test the hypothesis that people have had a measurable impact on vegetation dynamics in the Sahel for the period 1982-2002. We compare potential natural vegetation dynamics predicted by a process-based ecosystem model with satellite-derived greenness observations, and map the agreement between the two across a geographic grid at a spatial resolution of 0.5 degrees. As aggregated data-model agreement is very good, any local differences between the two could be due to human impact. We then relate this agreement metric to state-of-theart data sets on demographics, pasture, and cropping. Our findings suggest that demographic and agricultural pressures in the Sahel are unable to account for differences between simulated and observed vegetation dynamics, even for the most densely populated areas. But we do identify a weak, positive correlation between data-model agreement and pasture intensity at the Sahel-wide level. This indicates that herding or grazing does not appreciably affect vegetation dynamics in the region. Either people have not had a significant impact on vegetation dynamics in the Sahel or the identification of a human "footprint" is precluded by inconsistent or subtle vegetation response to complex socio-environmental interactions, and/or limitations in the data used for this study. We do not exclude the possibility of a greater human influence on vegetation dynamics over the coming decades with changing land use.
(3053) Emily Cheesbrough Watson
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 bound for the perimeter of inner parallel bodies
Creators: name: Larson, Simon
Publisher: name: arXiv
Year: 2015
Subjects: subject: Metric Geometry (math.MG)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 52A20, 52A38 (Primary), 52A40, 52A39 (Secondary)

description: We provide a sharp lower bound for the perimeter of the inner parallel sets of a convex body $Ω$. The bound depends only on the perimeter and inradius $r$ of the original body and states that \[|\partialΩ_t| \geq \Bigl(1-\frac{t}{r}\Bigr)^{n-1}_+ |\partial Ω|.\] In particular the bound is independent of any regularity properties of $\partialΩ$. As a by-product of the proof we establish precise conditions for equality. The proof, which is straightforward, is based on the construction of an extremal set for a certain optimization problem and the use of basic properties of mixed volumes. This is a revised version of the paper published in J. Funct. Anal. (2016) where an error is addressed in accordance with a corrigendum to appear in J. Funct. Anal. The main result of the paper remains the same but an error in Lemma 2.1 has been corrected and the subsequent proofs have been adapted accordingly.
description: This is a revision of the paper published in J. Funct. Anal. (2016) where an error in Lemma 2.1 is addressed in accordance with the published corrigendum
Additional file 3 of Knockout of a key gene of the nicotine biosynthetic pathway severely affects tobacco growth under field, but not greenhouse conditions
Creators: name: Smith, William A.
name: Matsuba, Yuki
name: Dewey, Ralph E.
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 3: Figure S1. Chromatograms of the tobacco QPT genes in WT (A) and genome edited backgrounds T8 (B), T21 (C) and K19 (D). To help align the chromatogram information with the sequences shown in Fig. 1, the ‘TGG’ PAM sites are indicated. Sequences for QPT2_T, QPT2_S and QPT1_T are shown in the forward direction; QPT1_S sequences are shown in the reverse complement. For line K19 plants that are heterozygous for the alternative mutant alleles in QPT2_T, each allele can be read independently from the chromatogram after the point where the two patterns diverge as shown in (D).
Download PDF Tant qu'il le faudra Tome 3
Creators: name: Tenney
Publisher: name: Zenodo
Year: 2024

description: Tant qu'il le faudra Tome 3 pan Cordélia

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Caractéristiques

Tant qu'il le faudra Tome 3

Cordélia

Nb. de pages: 466

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782382129135

Editeur: Akata

Date de parution: 2023

 

 

 

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Overview

Prudence est une jeune lesbienne dans le placard qui découvre la vie parisienne... David est un étudiant gay dont la vie tourne presque exclusivement autour de son engagement associatif et de son meilleur ami... Jade, militante féministe et anti-validisme, essaie de faire entendre sa voix sur les réseaux sociaux... Ina, déjà dans la vie active, doit jongler entre son travail, ses deux associations et ses activités d'autrice Wattpad... Ensemble et aux côtés de leurs amis, ils essaient, tant bien que mal, de s'entendre, pour publier HoMag, une revue LGBT+. Mais entre amour, études, travail et autres réalités du quotidien, la vie n'est pas toujours simple, pour celles et ceux qui ne rentrent pas dans le moule d'une société trop formatée. Suivez leurs vies, leurs errances, leurs luttes, durant toute une année scolaire, à travers un récit choral aussi ambitieux que stimulant.
Neutral carbon and CO in 76 (U)LIRGs and starburst galaxy centers A method to determine molecular gas properties in luminous galaxies
Creators: name: Israel, F. P.
name: Rosenberg, M. J. F.
name: van der Werf, P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present fluxes in both neutral carbon [CI] lines at the centers of 76 galaxies with FIR luminosities between 10^{9} and 10^{12} L(o) obtained with Herschel-SPIRE and with ground-based facilities, along with the J=7-6, J=4-3, J=2-1 12CO and J=2-1 13CO line fluxes. We investigate whether these lines can be used to characterize the molecular ISM of the parent galaxies in simple ways and how the molecular gas properties define the model results. In most starburst galaxies, the [CI]/13CO flux ratio is much higher than in Galactic star-forming regions, and it is correlated to the total FIR luminosity. The [CI](1-0)/CO(4-3), the [CI](2-1) (2-1)/CO(7-6), and the [CI] (2-1)/(1-0) flux ratios are also correlated, and trace the excitation of the molecular gas. In the most luminous infrared galaxies (LIRGs), the ISM is fully dominated by dense and moderately warm gas clouds that appear to have low [C]/[CO] and [13CO]/[12CO] abundances. In less luminous galaxies, emission from gas clouds at lower densities becomes progressively more important, and a multiple-phase analysis is required to determine consistent physical characteristics. Neither the CO nor the [CI] velocity-integrated line fluxes are good predictors of H2 column densities in individual galaxies, and X(CI) conversion factors are not superior to X(CO) factors. The methods and diagnostic diagrams outlined in this paper also provide a new and relatively straightforward means of deriving the physical characteristics of molecular gas in high-redshift galaxies up to z=5, which are otherwise hard to determine.
Table S5 from Diatoms dominate the eukaryotic metatranscriptome during spring in coastal ‘dead zone’ sediments
Creators: name: Broman, Elias
name: Sachpazidou, Varvara
name: Dopson, Mark
name: Hylander, Samuel
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: An important characteristic of marine sediments is the oxygen concentration that affects many central metabolic processes. There has been a widespread increase in hypoxia in coastal systems (referred to as ‘dead zones’) mainly caused by eutrophication. Hence, it is central to understand the metabolism and ecology of eukaryotic life in sediments during changing oxygen conditions. Therefore, we sampled coastal ‘dead zone’ Baltic Sea sediment during autumn and spring, and analysed the eukaryotic metatranscriptome from field samples and after incubation in the dark under oxic or anoxic conditions. Bacillariophyta (diatoms) dominated the eukaryotic metatranscriptome in spring and were also abundant during autumn. A large fraction of the diatom RNA reads was associated with the photosystems suggesting a constitutive expression in darkness. Microscope observation showed intact diatom cells and these would, if hatched, represent a significant part of the pelagic phytoplankton biomass. Oxygenation did not significantly change the relative proportion of diatoms nor resulted in any major shifts in metabolic ‘signatures’. In contrast, diatoms rapidly responded when exposed to light suggesting that light is limiting diatom development in hypoxic sediments. Hence, it is suggested that diatoms in hypoxic sediments are on ‘standby’ to exploit the environment if they reach suitable habitats.
EL ARBOL ARMENIO leer el libro pdf
Creators: name: Stiles
Publisher: name: Zenodo
Year: 2024

description: EL ARBOL ARMENIO de G.H. GUARCH

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Ficha técnica

EL ARBOL ARMENIO

G.H. GUARCH

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788418648250

Editorial: EL TORO MITICO

Año de edición: 2023

 

 

 

 

 

Alemán e libros descarga gratuita EL ARBOL ARMENIO de G.H. GUARCH 9788418648250 iBook

 

Overview

Estas páginas explican las razones del genocidio armenio de 1915. Aunque Turquía lo niega, en el año 2000, el Parlamento francés lo reconoció, y en 2016 convirtió su negación en un crimen multado. Emmanuel Macron declaró el 24 de abril como el Día de Conmemoración del Genocidio Armenio en Francia. Reconocido también por Cámara de Representantes y el Senado de Estados Unidos, el Papa Francisco lo denominó «el primer genocidio del siglo XX». Existe un pequeño país cristiano situado en el Cáucaso sur, encajonado entre enormes naciones musulmanas (Turquía, Irán y Azerbaiyán), cuyo pueblo ha sufrido como pocos los avatares más trágicos y desgraciados de la historia moderna. Mucho se ha hablado del Holocausto judío perpetrado durante la Segunda Guerra Mundial; en cambio, poco se sabe del exterminio despiadado que los turcos ejecutaron de forma sanguinaria contra los armenios a finales del siglo XIX y principios del XX, que sirvió de ejemplo a Hitler. El árbol armenio es una novela histórica conmovedora que, a través de las vicisitudes de la familia NazarianNakhoudian, entrelaza las vidas de las víctimas armenias con los perpetradores turcos. Pero, sobre todo, es una denuncia de cómo un Estado se convierte en genocida de sus propios ciudadanos simplemente por ser diferentes. Nos encontramos en la época de la disolución del Imperio otomano, que se extendía desde Argelia hasta Arabia Saudí y desde Irak hasta Centroeuropa. La desmembración del sultanato turco está en el origen de muchos de los conflictos recientes, como la creación del Estado de Israel, las guerras de los Balcanes, Siria e Irak, y la revolución islámica en Irán. Esta novela es esencial para comprender un drama que la historia ha opacado y que, sin duda, nos conmoverá. «Podríamos establecer paralelismos entre El árbol armenio con Lo que el viento se llevó, Doctor Zhivago, Cuarenta días del Musa Dagh y Archipiélago Gulag de Alexandr Solzhenitsyn». Anahit Margaryan, doctora en Lingüística armenia.
Extended primordial black hole mass functions with a spike
Creators: name: Magaña, Juan
name: Martín, Marco San
name: Sureda, Joaquín
name: Rubio, Marcelo E.
name: Araya, Ignacio J.
name: Padilla, Nelson D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We introduce a modification of the Press-Schechter formalism aimed to derive general mass functions for primordial black holes (PBHs). In this case, we start from primordial power spectra (PPS) which include a monochromatic spike, typical of ultra slow-roll inflation models. We consider the PBH formation as being associated to the amplitude of the spike on top of the linear energy density fluctuations, coming from a PPS with a blue index. By modelling the spike with a log-normal function, we study the properties of the resulting mass function spikes, and compare these to the underlying extended mass distributions. When the spike is at PBH masses which are much lower than the exponential cutoff of the extended distribution, very little mass density is held by the PBHs within the spike, and it is not ideal to apply the Press-Schechter formalism in this case as the resulting characteristic overdensity is too different from the threshold for collapse. It is more appropriate to do so when the spike mass is similar to, or larger than the cutoff mass. Additionally, it can hold a similar mass density as the extended part. Such particular mass functions also contain large numbers of small PBHs, especially if stable PBH relics are considered, and they can provide $\sim 1000M_\odot$ seeds for the supermassive black holes at the centres of present-day galaxies. The constraints on the fraction of dark matter in PBHs for monochromatic mass functions are somewhat relaxed when there is an additional underlying extended distribution of masses.
description: 14 pages, 4 figures, 1 table, refereces added, discussion extended and conclusion unchanged. Accepted for publication in MNRAS
Temporal variations in microbial activities and carbon turnover in subtidal sandy sediments
Creators: name: Van Beusekom, J. E.E.
name: Böer, S. I.
name: Arnosti, C.
name: Boetius, A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Temporal dynamics and vertical patterns in bacterial abundances and activities were studied in a shallow subtidal sand flat in the Sylt-R m Basin (North Frisian Wadden Sea, Germany). Extracellular enzymatic activities, bacterial carbon production and community respiration showed strong (factor of 4–5) temporal variations that were mostly related to seasonal temperature change and to changes in substrate availability. These temporal patterns in enzymatic activity were barely reflected in bacterial (200–400 mmol C m 2) and microphytobenthic biomass (800–1500 mmol C m 2) or the sedimentary carbohydrate inventory (1300–2900 mmol C m 2), suggesting that grazing controls the standing stocks of the microphytobenthic and bacterial assemblages. Despite their exposure to strong hydrodynamic forces such as tidal currents and wind-induced wave surge, the subtidal sandy sediments showed persistent vertical gradients in bacterial abundances, carbon production and extracellular enzymatic activities at all times. The vertical distribution of these parameters was tightly coupled to that of the microphytobenthos, dominated by diatoms. Despite the low organic carbon content typical for surge-exposed sandy sediments, high extracellular enzymatic activities and bacterial carbon production rates indicate a very active heterotrophic bacterial community, with a gross secondary productivity of 30–180 mmol C m 2, and a biomass turnover time of 2–18 days. Our data suggest that this high activity is supported by the rapid flux of carbohydrates from microphytobenthic primary productivity. Accordingly, the potential activities of enzymes hydrolyzing carbohydrates cover most of the total bacterial carbon demand during all seasons.
Principal Component Analysis of computed emission lines from proto-stellar jets
Creators: name: Cerqueira, A. H.
name: Reyes-Iturbide, J.
name: De Colle, F.
name: Vasconcelos, M. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A very important issue concerning protostellar jets is the mechanism behind their formation. Obtaining information on the region at the base of a jet can shed light into the subject and some years ago this has been done through a search for a rotational signature at the jet line spectrum. The existence of such signatures, however, remains controversial. In order to contribute to the clarification of this issue, in this paper we show that the Principal Component Analysis (PCA) can potentially help to distinguish between rotation and precession effects in protostellar jet images. We apply the PCA to synthetic spectro-imaging datacubes generated as an output of numerical simulations of protostellar jets. In this way we generate a benchmark to which a PCA diagnostics of real observations can be confronted. Using the computed emission line profiles for [O I]6300A and [S II]6716A, we recover and analyze the effects of rotation and precession in tomograms generated by PCA. We show that different combinations of the eigenvectors can be used to enhance and to identify the rotation features present in the data. Our results indicate that the PCA can be useful for disentangling rotation from precession in jets with an inclination of the jet with respect to the plane of the sky as high as 45 degrees. We have been able to recover the initially imposed rotation jet profile for models at moderate inclination angle (< 15 degrees) and without precession (abridged).
description: 19 pages, 19 figures, Accepted for publication in AJ
Changes in the spectrum and rates of extracellular enzyme activities in seawater following aggregate formation
Creators: name: Steen, A. D.
name: Ziervogel, K.
name: Arnosti, C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Marine snow aggregates are heavily colonized by heterotrophic microorganisms that express high levels of hydrolytic activities, making aggregates hotspots for carbon remineralization in the ocean. To assess how aggregate formation influences the ability of seawater microbial communities to access organic carbon, we compared hydrolysis rates of six polysaccharides in coastal seawater after aggregates had been formed (via incubation on a roller table) with hydrolysis rates in seawater from the same site that had not incubated on a roller table (referred to as whole seawater). Hydrolysis rates in the aggregates themselves were up to three orders of magnitude higher on a volume basis than in whole seawater. The enhancement of enzyme activity in aggregates relative to whole seawater differed by substrate, suggesting that the enhancement was under cellular control, rather than due to factors such as lysis or grazing. A comparison of hydrolysis rates in whole seawater with those in aggregate-free seawater, i.e. the fraction of water from the roller bottles that did not contain aggregates, demonstrated a nuanced microbial response to aggregate formation. Activities of laminarinase and xylanase enzymes in aggregate-free seawater were higher than in whole seawater, while activities of chondroitin, fucoidan, and arabinogalactan hydrolyzing enzymes were lower than in whole seawater. These data suggest that aggregate formation enhanced production of laminarinase and xylanase enzymes, and the enhancement also affected the surrounding seawater. Decreased activities of chondroitin, fucoidan, and arabinoglactan-hydrolyzing enzymes in aggregate-free seawaters relative to whole seawater are likely due to shifts in enzyme production by the aggregate-associated community, coupled with the effects of enzyme degradation. Enhanced activities of laminarin- and xylan-hydrolyzing enzymes in aggregate-free seawater were due at least in part to cell-free enzymes. Measurements of enzyme lifetime using commercial enzymes suggest that hydrolytic cell-free enzymes may be active over timescales of days to weeks. Considering water residence times of up to 10 days in the investigation area (Apalachicola Bay), enzymes released from aggregates may be active over timescales long enough to affect carbon cycling in the Bay as well as in the adjacent Gulf of Mexico. Aggregate formation may thus be an important mechanism shaping the spectrum of enzymes active in the ocean, stimulating production of cell-free enzymes and leading to spatial and temporal decoupling of enzyme activity from the microorganisms that produced them.
(3052) Basil Charlton Watson Watson
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.
Interactions between nitrogen deposition, land cover conversion, and climate change determine the contemporary carbon balance of Europe
Creators: name: Heimann, M.
name: Hughes, J.
name: Zaehle, S.
name: Heumann, B. W.
name: Viovy, N.
name: Ramankutty, N.
name: Jones, C.
name: Jung, M.
name: Chen, Y.
name: Churkina, G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: European ecosystems are thought to take up large amounts of carbon, but neither the rate nor the contributions of the underlying processes are well known. In the second half of the 20th century, carbon dioxide concentrations have risen by more that 100 ppm, atmospheric nitrogen deposition has more than doubled, and European mean temperatures were increasing by 0.02 circle C yr(-1). The extents of forest and grasslands have increased with the respective rates of 5800 km(2) yr(-1) and 1100 km(2) yr(-1) as agricultural land has been abandoned at a rate of 7000 km(2) yr(-1). In this study, we analyze the responses of European land ecosystems to the aforementioned environmental changes using results from four process-based ecosystem models: BIOME-BGC, JULES, ORCHIDEE, and O-CN. The models suggest that European ecosystems sequester carbon at a rate of 56 TgC yr(-1) (mean of four models for 1951-2000) with strong interannual variability (+/- 88 TgC yr(-1), average across models) and substantial inter-model uncertainty (+/- 39 TgC yr(-1)). Decadal budgets suggest that there has been a continuous increase in the mean net carbon storage of ecosystems from 85 TgC yr(-1) in 1980s to 108 TgC yr(-1) in 1990s, and to 114 TgC yr(-1) in 2000-2007. The physiological effect of rising CO
Final-state interactions and spin structure in $E1$ breakup of $^11$Li in Halo EFT
Creators: name: Göbel, Matthias
name: Acharya, Bijaya
name: Hammer, Hans-Werner
name: Phillips, Daniel R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We calculate the $E1$ breakup of the $2n$ halo nucleus $^{11}$Li in Halo Effective Field Theory (Halo EFT) at leading order. In Halo EFT, $^{11}$Li is treated as a three-body system of a $^{9}$Li core and two neutrons. We present a detailed investigation of final-state interactions (FSI) in the neutron-neutron $(nn)$ and neutron-core $(nc)$ channels. We employ Moller operators to formulate an expansion scheme that satisfies the non-energy-weighted cluster sum rule and successively includes higher-order terms in the multiple-scattering series for the FSI. Computing the $E1$ strength up to third order in this scheme, we observe apparent convergence and good agreement with experiment. The neutron-neutron FSI is by far the most important contribution and largely determines the maximum value of the $E1$ distribution. However, inclusion of $nc$ FSI does shift the peak position to slightly lower energies. Moreover, we investigate the sensitivity of the $E1$ response to the spin structure of the neutron-${}^9$Li interaction. We contrast results for an interaction that is the same in the spin-1 and spin-2 channels with one that is only operative in the spin-2 channel, and find that good agreement with experimental data is only obtained if the interaction is present in both spin channels. The latter case is shown to be equivalent to a calculation in which the spin of $^9$Li is neglected.
description: 23 pages, 6 figures
Review: geological and experimental evidence for secular variation in seawater Mg/Ca (calcite-aragonite seas) and its effects on marine biological calcification
Creators: name: Ries, J. B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Synchronized transitions in the polymorph mineralogy of the major reef-building and sediment-producing calcareous marine organisms and abiotic CaCO3 precipitates (ooids, marine cements) throughout Phanerozoic time are believed to have been caused by tectonically induced variations in the Mg/Ca ratio of seawater (molar Mg/Ca>2="aragonite seas",
Rogue waves in quantum lattices with correlated disorder
Creators: name: Buarque, A. R. C.
name: Dias, W. S.
name: Almeida, G. M. A.
name: Lyra, M. L.
name: de Moura, F. A. B. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the outbreak of anomalous quantum wavefunction amplitudes in a one-dimensional tight-binding lattice featuring correlated diagonal disorder. Such rogue-wave-like behavior is fostered by a competition between localization and mobility. The effective correlation length of the disorder is ultimately responsible for bringing the local disorder strength to a minimum, fuelling the occurrence of extreme events of much higher amplitudes, specially when compared to the case of uncorrelated disorder. Our findings are valid for a class of discrete one-dimensional systems and reveal profound aspects of the role of randomness in rogue-wave generation.
description: 6 pages, 6 figures
Additional file 1 of The iHealth-T2D study: a cluster randomised trial for the prevention of type 2 diabetes amongst South Asians with central obesity and prediabetes—a statistical analysis plan
Creators: name: Muilwijk, Mirthe
name: Loh, Marie
name: Mahmood, Sara
name: Palaniswamy, Saranya
name: Siddiqui, Samreen
name: Silva, Wnurinham
name: Frost, Gary S.
name: Gage, Heather M.
name: Jarvelin, Marjo-Riitta
name: Rannan-Eliya, Ravindra P.
name: Ahmad, Sajjad
name: Jha, Sujeet
name: Kasturiratne, Anuradhani
name: Katulanda, Prasad
name: Khawaja, Khadija I.
name: Kooner, Jaspal S.
name: Wickremasinghe, Ananda R.
name: van Valkengoed, Irene G. M.
name: Chambers, John C.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Detectable difference in secondary study outcomes after one year of follow-up.
Linking agricultural crop management and air quality models for regional to national-scale nitrogen assessments
Creators: name: Benson, V.
name: Bash, J. O.
name: Cooter, E. J.
name: Ran, L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: While nitrogen (N) is an essential element for life, human population growth and demands for energy, transportation and food can lead to excess nitrogen in the environment. A modeling framework is described and implemented to promote a more integrated, process-based and system-level approach to the estimation of ammonia (NH3) emissions which result from the application of inorganic nitrogen fertilizers to agricultural soils in the United States. The United States Department of Agriculture (USDA) Environmental Policy Integrated Climate (EPIC) model is used to simulate plant demand-driven fertilizer applications to commercial cropland throughout the continental US. This information is coupled with a process-based air quality model to produce continental-scale NH3 emission estimates. Regional cropland NH3 emissions are driven by the timing and amount of inorganic NH3 fertilizer applied, soil processes, local meteorology, and ambient air concentrations. Initial fertilizer application often occurs when crops are planted. A state-level evaluation of EPIC-simulated, cumulative planted area compares well with similar USDA reported estimates. EPIC-annual, inorganic fertilizer application amounts also agree well with reported spatial patterns produced by others, but domain-wide the EPIC values are biased about 6% low. Preliminary application of the integrated fertilizer application and air quality modeling system produces a modified geospatial pattern of seasonal NH3 emissions that improves current simulations of observed atmospheric particle nitrate concentrations. This modeling framework provides a more dynamic, flexible, and spatially and temporally resolved estimate of NH3 emissions than previous factor-based NH3 inventories, and will facilitate evaluation of alternative nitrogen and air quality policy and adaptation strategies associated with future climate and land use changes.
(3047) Joseph Charlton Watson
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.
Motion of Lee-Yang zeros
Creators: name: Hou, Qi
name: Jiang, Jianping
name: Newman, Charles M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider the zeros of the partition function of the Ising model with ferromagnetic pair interactions and complex external field. Under the assumption that the graph with strictly positive interactions is connected, we vary the interaction (denoted by $t$) at a fixed edge. It is already known that each zero is monotonic (either increasing or decreasing) in $t$; we prove that its motion is local: the entire trajectories of any two distinct zeros are disjoint. If the underlying graph is a complete graph and all interactions take the same value $t\geq 0$ (i.e., the Curie-Weiss model), we prove that all the principal zeros (those in $i[0,π/2)$) decrease strictly in $t$.
description: 16 pages, 1 figure
Reversible Denoising and Lifting Based Color Component Transformation for Lossless Image Compression
Creators: name: Starosolski, Roman
Publisher: name: arXiv
Year: 2015
Subjects: subject: Multimedia (cs.MM)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 94A08, 68P30, 94A15

description: An undesirable side effect of reversible color space transformation, which consists of lifting steps (LSs), is that while removing correlation it contaminates transformed components with noise from other components. Noise affects particularly adversely the compression ratios of lossless compression algorithms. To remove correlation without increasing noise, a reversible denoising and lifting step (RDLS) was proposed that integrates denoising filters into LS. Applying RDLS to color space transformation results in a new image component transformation that is perfectly reversible despite involving the inherently irreversible denoising; the first application of such a transformation is presented in this paper. For the JPEG-LS, JPEG 2000, and JPEG XR standard algorithms in lossless mode, the application of RDLS to the RDgDb color space transformation with simple denoising filters is especially effective for images in the native optical resolution of acquisition devices. It results in improving compression ratios of all those images in cases when unmodified color space transformation either improves or worsens ratios compared with the untransformed image. The average improvement is 5.0-6.0\% for two out of the three sets of such images, whereas average ratios of images from standard test-sets are improved by up to 2.2\%. For the efficient image-adaptive determination of filters for RDLS, a couple of fast entropy-based estimators of compression effects that may be used independently of the actual compression algorithm are investigated and an immediate filter selection method based on the detector precision characteristic model driven by image acquisition parameters is introduced.
description: Keywords: Reversible color space transformation; Lifting technique; Denoising; Reversible denoising and lifting step; Detector precision characteristic; Lossless image compression
CAMINS DUBTOSOS leer el libro pdf
Creators: name: Levell
Publisher: name: Zenodo
Year: 2024

description: CAMINS DUBTOSOS de JOAN CARLES VENTURA

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CAMINS DUBTOSOS

JOAN CARLES VENTURA

Número de páginas: 320

Idioma: CATALÁN

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788417077723

Editorial: ALREVES

Año de edición: 2018

 

 

 

 

 

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Overview

El mateix dia en què tres joves amics decideixen emprendre un destarotat viatge de fi de carrera cap a Itàlia per intentar recuperar la relació sentimental que un d’ells ha mantingut durant el curs amb una estudiant d’Erasmus, un reu surt en llibertat condicional de la presó de Fontcalent amb la ferma intenció de venjar-se i assaltar el domicili del culpable de la seua llarga condemna, un antic soci que, mentre ell es podria entre reixes, s’ha convertit en un dels constructors més pròspers del País Valencià, un influent home de negocis implicat en tots els tripijocs bruts del partit en el poder i connectat directament amb la màfia russa. Per una sèrie d’infortunis, els camins de l’expresidiari i dels tres col·legues s’encreuen de manera accidental i aleshores es deslloriga una persecució esbojarrada que tindrà fatídiques conseqüències i sonades repercussions. Camins dubtosos és un thriller esperpèntic de caire polític, amb aires de road movie i de comèdia gamberra que s’ambienta en terres valencianes durant els dies de la visita del Papa Benet XVI a la capital del Túria i del tràgic accident de la línia 1 del metro, el juliol del 2006. Una narració a ritme de selecta banda sonora que es desenvolupa amb la cadència d’una pel·lícula dels germans Coen i que enganxa in crescendo des de la primera línia fins a l’ine...
The influence of temperature and seawater carbonate saturation state on 13C-18O bond ordering in bivalve mollusks
Creators: name: Ramirez, P.
name: Marenssi, S.
name: Roy, K.
name: Nakamura, K.
name: Eagle, R. A.
name: Wanamaker Jr., A. D.
name: Tripati, A. K.
name: Eiler, J. M.
name: Hiebenthal, C.
name: Freitas, P. S.
name: Elliot, M.
name: Taviani, M.
name: Ries, J. B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: The shells of marine mollusks are widely used archives of past climate and ocean chemistry. Whilst the measurement of mollusk  δ  18O to develop records of past climate change is a commonly used approach, it has proven challenging to develop reliable independent paleothermometers that can be used to deconvolve the contributions of temperature and fluid composition on molluscan oxygen isotope compositions. Here we investigate the temperature dependence of 13C-18O bond abundance, denoted by the measured parameter & Delta;47, in shell carbonates of bivalve mollusks and assess its potential to be a useful paleothermometer. We report measurements on cultured specimens spanning a range in water temperatures of 5 to 25 C, and field collected specimens spanning a range of -1 to 29 C. In addition we investigate the potential influence of carbonate saturation state on bivalve stable isotope compositions by making measurements on both calcitic and aragonitic specimens that have been cultured in seawater that is either supersaturated or undersaturated with respect to aragonite. We find a robust relationship between & Delta;47 and growth temperature. We also find that the slope of a linear regression through all the & Delta;47 data for bivalves plotted against seawater temperature is significantly shallower than previously published inorganic and biogenic carbonate calibration studies produced in our laboratory and go on to discuss the possible sources of this difference. We find that changing seawater saturation state does not have significant effect on the & Delta;47 of bivalve shell carbonate in two taxa that we examined, and we do not observe significant differences between & Delta;47-temperature relationships between calcitic and aragonitic taxa. © Author(s) 2013.