cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Food security and nutritional status among Vancouver preschool children
Creators: name: Broughton, Margaret Anne
Publisher: name: University of British Columbia
Year: 2009

description: Objectives: The purpose of this study was to measure the prevalence of household food insecurity and to determine the association of household food insecurity with covariates related to the physical and social environments as well as the relationship of household food insecurity to preschool children's body mass index and nutritional status indicators. Study Design: Household food insecurity was measured using the USDA Core Food Security Module in a convenience sample of 142 households with children aged 2-5 years in Vancouver in March 2004. Univariate analyses utilized two-sample t-tests, Wilcoxon signed-rank test and Spearman rank correlation. Multivariate logistic regression was used to examine associations among socio-demographic variables, physical and social environmental predictors, children's body mass index, children's serum ferritin, serum zinc and household food insecurity. Results: Half of households were categorized as food secure, 16.2% were categorized as food insecure with anxiety about their food supply, 21.0% as food insecure with few or no hunger indications, 11.9% as moderately food insecure with indications of adult hunger and 0.7% as severely food insecure with high risk of child hunger. After controlling for socio-demographic variables, parents with less access to food of reasonable quality, lower self-rated food preparation skills, fewer cooking appliances, and lower levels of social inclusion were more likely to experience household food insecurity. Children in food insecure households were over twice as likely to have a body mass index over the 85th percentile compared to those in food secure households OR 2.6 (95%CI: 1.02, 6.5). Spearman rank correlation showed a significant association between increasing household food insecurity and increasing body mass index z-score (rho = 0.18, p = 0.04). Median serum zinc levels were significantly lower among children from food insecure households. Study results did not show a correlation between household food insecurity and serum ferritin depletion. Conclusions and Implications: The prevalence of household food insecurity in the present study indicates a need for monitoring of food insecurity among households with children in Canada. The results suggest that the physical and social environments as well as personal/household attributes are associated with household food insecurity. The study provides evidence that food insecurity is associated with sub-optimal nutritional status in young children.
Koszul duality for extension algebras of standard modules
Creators: name: Drozd, Yuriy
name: Mazorchuk, Volodymyr
Publisher: name: arXiv
Year: 2004
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16S37; 16G99; 17B10

description: We define and investigate a class of Koszul quasi-hereditary algebras for which there is a natural equivalence between the bounded derived category of graded modules and the bounded derived category of graded modules over (a proper version of) the extension algebra of standard modules. Examples of such algebras include, in particular, the multiplicity free blocks of the BGG category $\mathcal{O}$, and some quasi-hereditary algebras with Cartan decomposition in the sense of K{ö}nig.
description: 21 page, revised version
When Do Neural Networks Outperform Kernel Methods?
Creators: name: Ghorbani, Behrooz
name: Mei, Song
name: Misiakiewicz, Theodor
name: Montanari, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 62J99 (Primary)

description: For a certain scaling of the initialization of stochastic gradient descent (SGD), wide neural networks (NN) have been shown to be well approximated by reproducing kernel Hilbert space (RKHS) methods. Recent empirical work showed that, for some classification tasks, RKHS methods can replace NNs without a large loss in performance. On the other hand, two-layers NNs are known to encode richer smoothness classes than RKHS and we know of special examples for which SGD-trained NN provably outperform RKHS. This is true even in the wide network limit, for a different scaling of the initialization. How can we reconcile the above claims? For which tasks do NNs outperform RKHS? If covariates are nearly isotropic, RKHS methods suffer from the curse of dimensionality, while NNs can overcome it by learning the best low-dimensional representation. Here we show that this curse of dimensionality becomes milder if the covariates display the same low-dimensional structure as the target function, and we precisely characterize this tradeoff. Building on these results, we present the spiked covariates model that can capture in a unified framework both behaviors observed in earlier work. We hypothesize that such a latent low-dimensional structure is present in image classification. We test numerically this hypothesis by showing that specific perturbations of the training distribution degrade the performances of RKHS methods much more significantly than NNs.
description: 100 pages, 12 figures
On-Shell Description of Stationary Flames
Creators: name: Kazakov, Kirill A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The problem of non-perturbative description of stationary flames with arbitrary gas expansion is considered. On the basis of the Thomson circulation theorem an implicit integral of the flow equations is constructed. With the help of this integral, a simple explicit expression for the vortex mode of the burnt gas flow near the flame front is obtained. Furthermore, a dispersion relation for the potential mode at the flame front is written down, thus reducing the initial system of bulk equations and jump conditions for the flow variables to a set of integro-differential equations for the flame front position and the flow velocity at the front. The developed approach is applied to the case of thin flames. Finally, an asymptotic expansion of the derived equations is carried out in the case θ\to 1 where θis the gas expansion coefficient, and a single equation for the front position is obtained in the second post-Sivashinsky approximation. It is demonstrated, in particular, how the well-known problem of correct normalization of the front velocity is resolved in the new approach. It is verified also that in the first post-Sivashinsky approximation, the new equation reduces to the Sivashinsky-Clavin equation corrected according to Cambray and Joulin. Analytical solutions of the derived equations are found, and compared with the results of numerical simulations.
description: 22 pages, 4 figures
ZUsammenKUNFT
Creators: name: Mateo I Ferrer, Maria
Publisher: name: WE_OS Jahrbuch
Year: 2021

description: Im Jahr 2018 gründete eine Gruppe von Kollegiat*innen des Oberstufen-Kollegs einen Verein mit dem Namen ZUsammenKUNFT. Diese Gruppe besteht aus jungen Menschen mit sehr unterschiedlichen Hintergründen und Erfahrungen, die jedoch durch die Erfahrung des Fremdseins vereint sind. In dieser Organisation arbeiten sie gemeinsam, um die Mechanismen zu verstehen, durch die der Diskurs und die Kategorien entstehen, die sie ausschließen. Sie wollen verstehen, wie bestimmt wird, wer in ihrem sozialen Kontext zum „Wir“ und wer zum „Ihr“ gehört. Dafür setzen sie sich mit philosophischen und soziologischen Texten auseinander, die ihnen dabei helfen, ihre konkreten Erfahrungen der Ausgrenzung zu analysieren. Diese Lektüren ermöglichen den Kollegiat*innen, eine neue Perspektive zu gewinnen, von der aus sie nach Wegen zur Überwindung dieser Situation der Fremdheit suchen können. In diesem Sinne ist ZUsammenKUNFT ein Verein, dessen Ziel das Empowerment der Fremden ist. Aber diese jungen Menschen wollen nicht nur ihre persönliche Situation verbessern, sondern auch die homogenisierenden Kategorien der Normalität durchbrechen, um Raum für Vielfalt zu schaffen. Zu diesem Zweck verstehen sie sich als Multiplikator*innen und suchen nach Möglichkeiten, ihre Arbeit an andere junge Menschen weiterzugeben, die ihre Erfahrungen teilen. Mit diesem Ziel vor Augen entwickeln sie Unterrichtsmaterialien, die sie Lehrer*innen anderer Schulen zur Verfügung stellen. A group of students at the Oberstufen-Kolleg founded an association “ZUsammenKUNFT“ in 2018. Members of this association are young people with diverse backgrounds and experiences, but they all share the same experience of being strangers. In this organisation, they work together in order to analyse and understand the mechanisms that produce a discourse and categories which exclude them. They want to understand the way “we” and “you” are defined and who is part of these categories in their social context. In order to do that, they deal with philosophical and sociological texts which help them to analyse their experience of being excluded. This theoretical basis allows the students to gain a new perspective that enables them to find a way to overcome their alienation. Therefore, “ZUsammenKUNFT” aims at empowerment of foreigners. But these young people do not only want to improve their own personal situation, but they also want to break up the homogenised categories of normality in order to create space for diversity. In order to achieve that, they see themselves as multiplicators and search for opportunities to pass on their insights to other young people who share their experiences. With this goal in mind they develop teaching material which they provide for teachers of other schools.
description: WE_OS Jahrbuch, Bd. 4 Nr. 1 (2021): Herausforderungen und Perspektiven für die Oberstufe
Environment influence on the IR fluorescence of Xe$_{2}^{*}$ molecules in electron beam excited Ar--Xe mixture at high density
Creators: name: Borghesani, A. F.
name: Carugno, G.
name: Iannuzzi, D.
name: Mogentale, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report new measurements of the near infrared (NIR) Xe$_2^*$ excimer fluorescence in an electron--beam--excited Ar (90%)--Xe (10 %) mixture at room temperature. Previous measurements up to a density $N\approx 2\times 10^{26}$ m$^{-3}$ discovered a broad excimer fluorescence band at $\approx 7800$ cm$^{-1},$ whose center is red--shifted by increasing $N$ (A. F. Borghesani, G. Bressi, G. Carugno, E. Conti, and D. Iannuzzi, {\em J. Chem. Phys.}, {\bf 115}, 6042 (2001)). The shift has been explained by assuming that the energy of the optical active electron in the molecule is shifted by the density--dependent Fermi shift and by accounting for the solvation effect due to the environment. We have extended the density range up to $N\approx 6\times 10^{26}$ m$^{-3}, $ confirming the previous measurements and extending the validity of the interpretative model. A detailed analysis of the width of the fluorescence band gives a value of 2.85 nm for the size of the investigated excimer state. Such a large value lends credence to the validity of the proposed explanation of the experimental findings.
description: 8 pages in two column format, 4 figures, submitted to European physical Journal D
Distanzunterricht am Oberstufen-Kolleg
Creators: name: Herbers, Hannah
Publisher: name: WE_OS Jahrbuch
Year: 2021

description: Wie an anderen Schulen musste auch am Oberstufen-Kolleg ab März 2020 der Unterricht für einige Wochen in Distanz durchgeführt werden. Die Umsetzung des Distanzunterrichts war dabei unterschiedlich. In diesem Beitrag wird die Phase von März bis Sommer 2020 aus der Perspektive einer Kollegiatin des Oberstufen-Kollegs geschildert, und es werden die jeweiligen Vor- und Nachteile der Umsetzung abgewogen. As in other schools, classes at the upper secondary level had to be held by distance learning for a few weeks from March 2020. The implementation of distance learning varied. This article describes the phase from March to summer 2020 from the point of view of a student in the experimental upper school Oberstufen-Kolleg Bielefeld and weighs up the respective advantages and disadvantages of the implementation.
description: WE_OS Jahrbuch, Bd. 4 Nr. 1 (2021): Herausforderungen und Perspektiven für die Oberstufe
Additional file 5 of Molecular delimitation of European leafy liverworts of the genus Calypogeia based on plastid super-barcodes
Creators: name: Ślipiko, Monika
name: Myszczyński, Kamil
name: Buczkowska, Katarzyna
name: Bączkiewicz, Alina
name: Szczecińska, Monika
name: Sawicki, Jakub
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Table S5. Discrimination power of the DNA barcodes recommended for plants.
Additional file 1 of Miglustat ameliorates isoproterenol-induced cardiac fibrosis via targeting UGCG
Creators: name: Liu, Jing
name: Li, Wenqi
name: Jiao, Ran
name: Liu, Zhigang
name: Zhang, Tiantian
name: Chai, Dan
name: Meng, Lingxin
name: Yang, Zhongyi
name: Liu, Yuming
name: Wu, Hongliang
name: Gu, Xiaoting
name: Li, Xiaohe
name: Yang, Cheng
Publisher: name: figshare
Year: 2025
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Additional file 6 of Molecular delimitation of European leafy liverworts of the genus Calypogeia based on plastid super-barcodes
Creators: name: Ślipiko, Monika
name: Myszczyński, Kamil
name: Buczkowska, Katarzyna
name: Bączkiewicz, Alina
name: Szczecińska, Monika
name: Sawicki, Jakub
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Figure S1. Phylograms based on amino acids and complete plastid genomes of Calypogeia species. The posterior probability value lower than 1 is given at the node.
The $Λ$-BMS$_4$ Charge Algebra
Creators: name: Compère, Geoffrey
name: Fiorucci, Adrien
name: Ruzziconi, Romain
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The surface charge algebra of generic asymptotically locally (A)dS$_4$ spacetimes without matter is derived without assuming any boundary conditions. Surface charges associated with Weyl rescalings are vanishing while the boundary diffeomorphism charge algebra is non-trivially represented without central extension. The $Λ$-BMS$_4$ charge algebra is obtained after specifying a boundary foliation and a boundary measure. The existence of the flat limit requires the addition of corner terms in the action and symplectic structure that are defined from the boundary foliation and measure. The flat limit then reproduces the BMS$_4$ charge algebra of supertranslations and super-Lorentz transformations acting on asymptotically locally flat spacetimes. The BMS$_4$ surface charges represent the BMS$_4$ algebra without central extension at the corners of null infinity under the standard Dirac bracket, which implies that the BMS$_4$ flux algebra admits no non-trivial central extension.
description: 22 pages + 23 pages appendices, 1 figure
Des correctifs de securite a la mise a jour
Creators: name: Loriant, Nicolas
name: Devillechaise, Marc Segura
name: Menaud, Jean-Marc
Publisher: name: arXiv
Year: 2004
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The ever growing software complexity suggests that they will never be bugfree and therefore secure. Software compagnies regulary publish updates. But maybe because of lack of time or care or maybe because stopping application is annoying, such updates are rarely if ever deployed on users' machines. We propose an integrated tool allowing system administrators to deploy critical security updates on the fly on applications running remotly without end-user intervention. Our approach is based on an aspect weaving system, Arachne, that dynamicaly rewrites binary code. Hence updated applications are still running while they are updated. Our second tool Minerve integrates Arachne within the standart updating process: Minerve takes a patch produced by dif and eventually builds a dynamic patch that can later be woven to update the application on the fly. In addition, Minerve allows to consult patches translated in a dedicated language and hence eases auditing tasks.
title: 01_2637
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Dynamical System Analysis of Randall-Sundrum Model with Tachyon Field on the Brane
Creators: name: Ravanpak, Arvin
name: Fadakar, Golnaz Farpour
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this manuscript we use the dynamical system approach to study the linear dynamics of a Randall-Sundrum braneworld model with a tachyon scalar field confined to the brane. We recognize that the form of the tachyon potential plays a significant role in the evolution of the universe. For the case of an inverse square potential we find that one of our new variables, $λ$, is constant. We obtain critical points of the system in this situation and investigate their stability using the linear perturbation method. Then we turn to a Gaussian potential in which $λ$ is not constant. Using the idea of instantaneous critical points we study the behavior of the universe and its possible fates. One of the interesting results of this manuscript is that our universe will probably experience another phase transition from acceleration to deceleration in the future.
Ion Beam Milling as a Symmetry-Breaking Control in the Synthesis of Periodic Arrays of Identically Aligned Bimetallic Janus Nanocrystals.
Creators: name: J. Tuff, Walker
name: A. Hughes, Robert
name: D. Golze, Spencer
name: Neretina*, Svetlana
Publisher: name: University of Notre Dame
Year: 2024

description: Bimetallic Janus nanostructures represent a highly functional class of nanomaterials due to important physicochemical properties stemming from the union of two chemically distinct metal segments where each maintains a partially exposed surface. Essential to their synthesis is the incorporation of a symmetry-breaking control that is able to induce the regioselective deposition of a secondary metal onto a preexisting nanostructure even though such depositions are, more often than not, in opposition to the innate tendencies of heterogeneous growth modes. Numerous symmetry-breaking controls have been forwarded but the ensuing Janus structure syntheses have not yet achieved anywhere near the same level of control over nanostructure size, shape, and composition as their core–shell and single-element counterparts. Herein, a collimated ion beam is demonstrated as a symmetry-breaking control that allows for the selective removal of a passivating oxide shell from one side of a metal nanostructure to create a configuration that is transformable into a substrate-bound Au–Ag Janus nanostructure. Two different modalities are demonstrated for achieving Janus structures where in one case the oxide dissolves in the growth solution while in the other it remains affixed to form a three-component system. The devised procedures distinguish themselves in their ability to realize complex Janus architectures arranged in periodic arrays where each structure has the same alignment relative to the underlying substrate. The work, hence, provides an avenue for forming precisely tailored Janus structures and, in a broader sense, advances the use of oxides as an effective means for directing nanometal syntheses.
Additional file 1 of Molecular delimitation of European leafy liverworts of the genus Calypogeia based on plastid super-barcodes
Creators: name: Ślipiko, Monika
name: Myszczyński, Kamil
name: Buczkowska, Katarzyna
name: Bączkiewicz, Alina
name: Szczecińska, Monika
name: Sawicki, Jakub
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Species used in this study, sampling data and sequencing results.
Additional file 2 of Molecular delimitation of European leafy liverworts of the genus Calypogeia based on plastid super-barcodes
Creators: name: Ślipiko, Monika
name: Myszczyński, Kamil
name: Buczkowska, Katarzyna
name: Bączkiewicz, Alina
name: Szczecińska, Monika
name: Sawicki, Jakub
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Table S2. SNP and indel variation within chloroplast genes of Calypogeia species.
Looking for a new member of Gordon's identities
Creators: name: Afsharijoo, Pooneh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We give a commutative algebra viewpoint on Andrews recursive formula for the partitions appearing in "Gordon's identities", which are a generalization of Rogers-Ramanujan identities. Using this approach and differential ideals we conjecture a family of partition identities which extend Gordon's identities. This family is indexed by r >=2. We prove the conjecture for r=2 and r=3.
description: Published version
Calculating the nuclear mass at finite angular momenta
Creators: name: Carlsson, B. G.
name: Ragnarsson, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Mean field methods to calculate the nuclear mass are extended into the high spin regime to calculate the nuclear binding energy as a function of proton number, neutron number and angular momentum. Comparing the trend as a function of mass number for a selection of high-spin states, a similar agreement between theory and experiment is obtained as for ground state masses.
description: 4 pages, 3 figures
Economic Potential of Using High Tunnel Hoop Houses to Produce Fruits and Vegetables
Creators: name: Donnell, Jeri
name: Biermacher, Jon T.
name: Upson, Steve
name: Donnell, Jeri
name: Biermacher, Jon T.
name: Upson, Steve
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Farm Management
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: breakeven prices
subject: economics
subject: fruits and vegetables
subject: hoop houses
subject: plasticulture

description: Abstract Hoop house plasticulture has been promoted as a production technology that allows fruit and vegetable crops to be grown in the cool season months in early spring and late fall. At this time little information regarding the economics of hoop house plasticulture is available. Two fruit and vegetable production systems were developed for growing conditions in south-central Oklahoma. The first system has a spinach crop followed by field tomato, and the second system has annually produced strawberry followed by yellow and zucchini squash. Crop production data were collected in a three-year randomized and replicated experiment. The objectives were (1) to determine the expected cost of production for each crop and systems, (2) to determine the breakeven price for each crop in each system, and (3) to determine how robust breakeven prices are to a number of yield, expense and marketing scenarios. The expected total cost of production were $1,968 and $1,652 per house for spinach and tomato crops, respectively, and $2,749, $359 and $353 per house for yellow and zucchini squash crops, respectively. Breakeven prices for spinach and tomato were $3.32 and $0.83 per pound, respectively, and $6.16, $0.92, and $1.40 per pound for strawberry and yellow and zucchini squash, respectively. Breakeven prices for spinach and strawberry crops were most sensitive to assumptions about quantity of marketable yield sold and/or quantity of yield consumed by grower household.
Additional file 3 of Molecular delimitation of European leafy liverworts of the genus Calypogeia based on plastid super-barcodes
Creators: name: Ślipiko, Monika
name: Myszczyński, Kamil
name: Buczkowska, Katarzyna
name: Bączkiewicz, Alina
name: Szczecińska, Monika
name: Sawicki, Jakub
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Table S3. SNP and indel variation within chloroplast noncoding regions of Calypogeia species.
Alcachofra: dicas essenciais para plantar e usufruir desta planta rica em nutrientes
Creators: name: Popoff, Sandra
Publisher: name: Zenodo
Year: 2024
Subjects: jornalismo rural
agricultura sustentável

description: Você já se perguntou como seria adicionar um superalimento ao seu jardim e à sua dieta? A resposta pode estar na alcachofra. Rica em antioxidantes e cheia de sabor, esta planta não só melhora a saúde como também transforma qualquer refeição em uma experiência gourmet.

A alcachofra pode ajudar a reduzir o colesterol, regular a pressão arterial, melhorar a saúde do fígado e auxiliar na digestão. Além disso, essa planta é uma excelente fonte de fibra, vitamina C, vitamina K, ácido fólico, magnésio e manganês.

No Brasil, o estado de São Paulo é um grande produtor de alcachofras. A cidade de São Roque, no interior do estado, possui condições climáticas ideais para o cultivo, tornando-se um polo produtor da hortaliça no país. Muitos agricultores da região vivem da remuneração obtida do cultivo da alcachofra, pois a produção tem boa rentabilidade na comercialização.

Neste artigo, abordaremos além de dicas sobre o cultivo, os benefícios da alcachofra para a saúde humana. Continue lendo para descobrir mais sobre esta planta fascinante e como ela pode beneficiar sua saúde.
The ALPINE-ALMA [CII] survey: Molecular gas budget in the Early Universe as traced by [CII]
Creators: name: Dessauges-Zavadsky, M.
name: Ginolfi, M.
name: Pozzi, F.
name: Béthermin, M.
name: Fèvre, O. Le
name: Fujimoto, S.
name: Silverman, J. D.
name: Jones, G. C.
name: Schaerer, D.
name: Faisst, A. L.
name: Khusanova, Y.
name: Fudamoto, Y.
name: Cassata, P.
name: Loiacono, F.
name: Capak, P. L.
name: Yan, L.
name: Amorin, R.
name: Bardelli, S.
name: Boquien, M.
name: Cimatti, A.
name: Gruppioni, C.
name: Hathi, N. P.
name: Ibar, E.
name: Koekemoer, A. M.
name: Lemaux, B. C.
name: Narayanan, D.
name: Oesch, P. A.
name: Rodighiero, G.
name: Romano, M.
name: Talia, M.
name: Toft, S.
name: Vallini, L.
name: Vergani, D.
name: Zamorani, G.
name: Zucca, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The molecular gas content of normal galaxies at z>4 is poorly constrained, because the commonly used molecular gas tracers become hard to detect. We use the [CII]158um luminosity, recently proposed as a molecular gas tracer, to estimate the molecular gas content in a large sample of main-sequence star-forming galaxies at z=4.4-5.9, with a median stellar mass of 10^9.7 Msun, drawn from the ALMA Large Program to INvestigate [CII] at Early times (ALPINE) survey. The agreement between molecular gas masses derived from [CII] luminosity, dynamical mass, and rest-frame 850um luminosity, extrapolated from the rest-frame 158um continuum, supports [CII] as a reliable tracer of molecular gas in our sample. We find a continuous decline of the molecular gas depletion timescale from z=0 to z=5.9, which reaches a mean value of (4.6+/-0.8)x10^8 yr at z~5.5, only a factor of 2-3 shorter than in present-day galaxies. This suggests a mild enhancement of star formation efficiency toward high redshifts, unless the molecular gas fraction significantly increases. Our estimates show that the rise in molecular gas fraction as reported previously, flattens off above z~3.7 to achieve a mean value of 63%+/-3 over z=4.4-5.9. This redshift evolution of the gas fraction is in line with the one of the specific star formation rate. We use multi-epoch abundance matching to follow the gas fraction evolution over cosmic time of progenitors of z=0 Milky Way-like galaxies in 10^13 Msun halos and of more massive z=0 galaxies in 10^14 Msun halos. Interestingly, the former progenitors show a monotonic decrease of the gas fraction with cosmic time, while the latter show a constant gas fraction from z=5.9 to z~2 and a decrease at z<2. We discuss three possible effects, namely outflows, halt of gas supplying, and over-efficient star formation, which may jointly contribute to the gas fraction plateau of the latter massive galaxies.
description: 16 pages, 9 figures, 2 tables. Submitted to Astronomy & Astrophysics
Additional file 1 of Dual stable isotopes approach reveals the nitrogen sources, transformations, and effects on phytoplankton community structure in a large floodplain lake
Creators: name: Ha, Xianrui
name: Lin, Shunhe
name: Jia, Junjie
name: Wang, Jing
name: Wu, Fan
name: Sun, Kun
name: Lu, Yao
name: Wang, Shuoyue
name: Gao, Yang
Publisher: name: figshare
Year: 2025
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Supplementary material 1: Table S1 Detailed sampling information of sample size and date during 2018–2019 in study area. Table S2 Variation of environmental variables in different season and all year of Lake Poyang. Table S3 Uncertainty analysis of nitrogensources contribution in Lake Poyang across seasons using MixSIAR model. Fig. S1 Piper diagram of major ions in Lake Poyang in all four seasons. Different colors are used to mark samples from different seasons. Fig. S2 The N and O isotope distribution in Lake Poyang in spring, summer, autumn, winter; The values of δ15N-NO3- were marked upon the bar. Fig. S3. Proportion of N sources in all year, spring, summer, autumn, winterof Lake Poyang using MixSIAR model
title: High-frequency PWM amplifier for high precision motion
Creators: name: Šibenik, Dijana
Publisher: name: TU Wien
Year: 2020
Subjects: subject: Leistungselektronik
subject: Hochpräzise Antriebe
subject: Mechatronik
subject: Power electronics
subject: High-precision actuators
subject: Mechatronics

description: High quality motion with nanometer resolution is indispensable in many systems such as atomic force microscopes and high-precision 3D- printers. In these systems, Lorentz actuators or piezoelectric actuators are typically utilized to satisfy the requirements on the positioning resolution and bandwidth, and they are usually driven by linear power amplifiers. They have low noise for high-precision motion; however, their energy efficiency is low, resulting in energy dissipation and a cooling system requirement. Although the energy efficiency can be improved by using switching power amplifiers, they generate current ripples that impair motion precision. To drive high-precision actuators in an energy efficient way without degrading the motion resolution, this thesis investigates the feasibility to utilize switching power amplifiers based on Gallium Nitride (GaN) transistors, which enable a higher switching frequency in comparison with conventional silicon-based transistors. For the experimental investigation, a switching power amplifier is developed, consisting of a PWM generator, logic and dead-time adjustment circuit, an output stage and an LC-filter. Evaluation of the developed amplifier is conducted with inductive load and piezoelectric actuator. Experimental results with the inductive load show that the increase of the switching frequency from 20 kHz to 1MHz decreases the current ripple of the coil current by a factor of 13 while power dissipation is constantly low. However, the energy dissipation analysis reveals high energy losses when the developed power amplifier is used for driving the piezoelectric actuator. Analysis shows that cause for these losses is the hard switching effect occurring when amplifier is used for driving a capacitive load. Experimental results also show that the high-frequency switching is beneficial for a high positioning bandwidth and reduction of a standard deviation of voltage on the piezoelectric actuator up to switching frequency of 450 kHz.
„Und das Schwierigste ist und bleibt halt, alleine zu lernen“
Creators: name: Frohn, Julia
name: Pozas, Marcela
Publisher: name: WE_OS Jahrbuch
Year: 2021

description: Der Beitrag zielt auf die explorative Bearbeitung zweier wenig beachteter Forschungsfelder im Rahmen der bildungsbezogenen Covid-19-Forschung: Zum einen soll er Aufschluss darüber geben, welche Potenziale und Herausforderungen der „Fernunterricht“ in der Oberstufe im Vergleich zu anderen Schulstufen und ‑formen birgt; damit verbunden steht zum anderen die Frage im Mittelpunkt, wie die Förderung von Autonomieerleben, Kompetenzerleben und sozialer Eingebundenheit über die Distanz dazu beitragen kann, den besonderen Bedingungen im „Fernunterricht“ der Oberstufe zu begegnen. Methodisch stützt sich der Beitrag auf Impulse aus einer Interviewstudie (N = 14) sowie aus einer detaillierten Analyse eines Fallbeispiels als Sonderfall im Datenmaterial. Die Interviews wurden – als Nachfolgeerhebung zu einer Befragung im April 2020 – zwischen April und Juni 2021 geführt und nach Anonymisierung und Transkription inhaltsanalytisch mithilfe des Programms MAXQDA ausgewertet. Aus dem Material wurden die Kategorien Selbstständigkeit, Corona-bedingte Unsicherheiten sowie Wissenschaftspropädeutik durch fachliches und überfachliches Lernen als Besonderheiten für den Distanzunterricht in der Oberstufe herausgearbeitet. Das Fallbeispiel wiederum zeigt als „practice example“ Möglichkeiten auf, diesen Besonderheiten durch Stärkung von Autonomieerleben, Kompetenzerleben und sozialer Eingebundenheit produktiv zu begegnen. The paper presents an exploratory study on two current research gaps within the context of Covid-19 educational research: On the one hand, the study aims to examine the potentials and challenges of “distance learning” at upper secondary school (Oberstufe) compared to other school forms and tracks. On the other hand, it focuses on investigating how fostering students’ autonomy, competence and relatedness through distance learning can help meet the special learning and teaching conditions at upper secondary school. Following a qualitative research design, the study analyses data from an interview study (N = 14) including an in-depth exploration of data material from a case study. Concerning the interviews, data stems from a follow-up survey conducted between April and June 2021. After anonymization and transcription, the data was analyzed using the MAXQDA program. From the material, the categories of self-regulated learning, Corona-related uncertainties, and science propaedeutics through subject-specific and interdisciplinary learning were worked out as special features concerning distance teaching and learning at the upper level of secondary school. Furthermore, the case study serves as a “practice example” and sheds information on the possibilities to productively work these peculiarities by strengthening autonomy, competence and relatedness.
description: WE_OS Jahrbuch, Bd. 4 Nr. 1 (2021): Herausforderungen und Perspektiven für die Oberstufe
Circuits in random graphs: from local trees to global loops
Creators: name: Marinari, Enzo
name: Monasson, Remi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We compute the number of circuits and of loops with multiple crossings in random regular graphs. We discuss the importance of this issue for the validity of the cavity approach. On the one side we obtain analytic results for the infinite volume limit in agreement with existing exact results. On the other side we implement a counting algorithm, enumerate circuits at finite N and draw some general conclusions about the finite N behavior of the circuits.
description: submitted to JSTAT
An Economic Performance Analysis of the Beef Cow-herd Enterprise Using a Stochastic Frontier Function
Creators: name: Cho, Jaesung
name: Park, Seong Cheol
name: Bevers, Stanley J.
name: Cho, Jaesung
name: Park, Seong Cheol
name: Bevers, Stanley J.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Farm Management
subject: Livestock Production/Industries
subject: Production Economics
subject: beef
subject: cattle
subject: cost
subject: cow-calf
subject: production
subject: stochastic production function.

description: Standardized Performance Analysis (SPA) data from Texas, Oklahoma, and New Mexico were used to examine the economic performance of beef cow herd operations in the Southern Plains region by measuring their technical efficiency index. Factors that make significant impacts on the production are herd size, machinery investment per breeding cow, and rainfall. Little technical inefficiency among the Southern beef cattle operations that participated in the SPA data was found.
Self-Organization and Nitrogen Incorporation in Diamond-Like Carbon Microstructures Synthesized by Nonthermal Plasma
Creators: name: J. Clarke, Russell
name: Hicks, Jason C.
Publisher: name: University of Notre Dame
Year: 2024

description: Nonthermal plasma activation of light alkanes is an encouraging decarbonization strategy to produce chemicals or fuels from abundant and/or flared carbon sources. However, prolific carbon growth on both the catalyst and electrode has limited its practicality, requiring additional knowledge of the carbon structure and growth mechanism before breakthroughs are realized. Here, visual evidence is provided for nonuniform diamond-like carbon (DLC) microstructures that materialize in a coaxial dielectric barrier discharge (DBD) reactor flowing ethane and He at 278 K. Through a connection to known behaviors of DBD microdischarge patterns, the microstructure spacing was controlled by altering the applied voltage (ΔV) of the plasma or the burning voltage (Ub). Additionally, carbon valorization through nitrogen incorporation from N2 was explored as an orthogonal solution to carbon mitigation, with N/C values >0.25 achieved and both sp2 and sp3 C–N bonding observed in the microstructures.
Gene expression profiles during scarless healing of human palatal mucosa
Creators: name: Habijanac, Tara Marie
Publisher: name: University of British Columbia
Year: 2009

description: Scarless healing of adult wounds is not well understood. Unlike human skin, oral masticatory mucosa heals largely by regeneration rather than scar formation. For a better understanding of healing by regeneration, we compared gene expression profiles of human mucosal wounds 1-, 3-, and 7-day-postwounding to that of normal non-wounded mucosa in three healthy volunteers. Clinical and histological healing was followed in additional volunteers for up to 60 days. The majority of the mucosal wounds healed with regeneration as the wounds at 60 days or later were no longer clinically or histologically detectable. At day one, a large number of genes showed a change in expression (988 genes). Expression levels of extracellular matrix proteins were down-regulated while genes in several categories including cytokines, cell motility and immune response were up-regulated. Gene ontology analysis of 3-day-old wounds revealed up-regulation of many categories including proteinase inhibitors, calcium binding categories. In 7-day-old wounds, genes for the extracellular matrix proteins and cytoskeletal structural proteins were highly expressed. Interestingly, some genes with the largest increase in expression showed no major decline from day one to seven. These included matrix metalloproteinase-1, serine proteinase inhibitor B l and a novel gene in the context of wound healing, carcinoembryonic antigen-related cell adhesion molecule-6 (Ceacam-6). In early wounds, Ceacam-6 protein was expressed by basal and suprabasal keratinocytes at the wound margin. After 7 days post-wounding, expression of Ceacam-6 in keratinocytes declined but was induced in granulation tissue fibroblasts that continued to express Ceacam-6 until day 28. The function of Ceacam-6 in oral cells during wounding remains unravelled but could involve regulation of self-defence against bacteria and inhibition of anoikis. To conclude, the present study represents one of the first large-scale gene expression studies comparing different phases of regenerating human mucosal wounds. Future studies are needed to directly compare gene expression profiles of healing scar-forming skin wounds to regenerating oral wounds.
Series reduction method for scattering of planar waves by Kerr-Newman black holes
Creators: name: Stratton, Tom
name: Leite, Luiz C. S.
name: Dolan, Sam R.
name: Crispino, Luís C. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a practical method for evaluating the scattering amplitude $f_s(θ,ϕ)$ that arises in the context of the scattering of scalar, electromagnetic and gravitational planar waves by a rotating black hole. The partial-wave representation of $f_s$ is a divergent series, but $f_s$ itself diverges only at a single point on the sphere. Here we show that $f_s$ can be expressed as the product of a reduced series and a pre-factor that diverges only at this point. The coefficients of the reduced series are found iteratively as linear combinations of those in the original series, and the reduced series is shown to have amenable convergence properties. This series-reduction method has its origins in an approach originally used in electron scattering calculations in the 1950s, which we have extended to the axisymmetric context for all bosonic fields.
description: 16 pages, 3 figures
Gestion Dynamique des Services Techniques pour Modele a Composants
Creators: name: Herault, Colombe
name: Lecomte, Sylvain
Publisher: name: arXiv
Year: 2004
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The new applications being intended for more and more heterogeneous environments, it is necessary to propose solutions of development which answer in best the necessities of adaptation of new services. Component-based programming partially answers this aim, allowing easy replacement of software blocks in order to provide the most adapted version of a component. Nevertheless, most of the industrial component-based model implementations do not allow to provide to components the most adapted technical services (naming, trading, security, transaction, etc.). In this paper, we suggest defining technical services themselves under the shape of components. We shall detail our proposition, by basing it on the Fractal component model of Objectweb. Then, we shall bring solutions for the use of these new component-based technical services and shall propose a set of management components which allow to administer in a dynamic and stand-alone way the obtained components. Finally we present the prototype of the proposed solution.
Revisited reference solar proton event of 23-Feb-1956: Assessment of the cosmogenic-isotope method sensitivity to extreme solar events
Creators: name: Usoskin, Ilya G.
name: Koldobskiy, Sergey A.
name: Kovaltsov, Gennady A.
name: Rozanov, Eugene V.
name: Sukhodolov, Timophei V.
name: Mishev, Alexander L.
name: Mironova, Irina A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Our direct knowledge of solar eruptive events is limited to several decades and does not include extreme events, which can only be studied by the indirect proxy method over millennia, or by a large number of sun-like stars. There is a gap, spanning 1--2 orders of magnitude, in the strength of events between directly observed and reconstructed ones. Here, we study the proxy-method sensitivity to identify extreme solar particle events (SPEs). First, the strongest directly observed SPE (23-Feb-1956), used as a reference for proxy-based reconstructions, was revisited using the newly developed method. Next, the sensitivity of the cosmogenic-isotope method to detect a reference SPE was assessed against the precision and number of individual isotopic records, showing that it is too weak by a factor $\approx$30 to be reliably identified in a single record. Uncertainties of 10Be and 14C data are shown to be dominated by local/regional patterns and measurement errors, respectively. By combining several proxy records, an SPE 4--5 times stronger than the reference one can be potentially detected, increasing the present-day sensitivity by an order of magnitude. This will allow filling the observational gap in SPE strength distribution, thus enriching statistics of extreme events from 3--4 presently known ones to several tens. This will provide a solid basis for research in the field of extreme events, both for fundamental science, viz. solar and stellar physics, and practical applications, such as the risk assessments of severe space-based hazards for the modern technological society.