42,672 research outputs found
Factors affecting evaporation of water from cattle bedding materials
No full textIn livestock farming, maintaining dry bedding is considered to be important for maximising animal performance and welfare. A better understanding of the mechanisms that regulate drying has the potential to improve bedding management and reduce production costs. A custom laboratory-scale method was developed to explore the effects of environmental conditions and bedding characteristics on drying rate (DR). Samples (n = 256) of different types of bedding materials were exposed to controlled environmental conditions by using a climate chamber equipped with a custom cabinet capable of simulating different levels of air velocity and bedding temperature. The effects of the type of material, bedding moisture content, bedding temperature, air temperature, air relative humidity (RH) and air velocity were evaluated in a full factorial experimental design. Under the experimental conditions tested, DR ranged from 0.28 to 6.04 kg m−2 d−1, with an average of 2.03 kg m−2 d−1. All variables significantly affected DR, but large variation in the magnitude of effects was found. Bedding moisture content, air velocity and air RH had considerably larger effects than the other variables, together accounting for more than 70% of the variance in DR. The DR from bedding samples increased with bedding moisture content and air velocity but decreased with increasing air RH. The results of the current study may have important implications in the design and management of bedded pack barns. To increase the DR and keep bedding dry, producers should focus primarily on providing adequate barn ventilation (both in terms of air velocity and air exchange), whereas maintaining a high pack temperature may yield poorer-than-expected results
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
The L-p-to-L-q boundedness of commutators with applications to the Jacobian operator
No full textSupplying the missing necessary conditions, we complete the characterisation of the L-p -> L-q boundedness of commutators [b, T] of pointwise multiplication and Calderon-Zygmund operators, for arbitrary pairs of 1 q, our results are new even for special classical operators with smooth kernels. As an application, we show that every f is an element of L-p(R-d) can be represented as a convergent series of normalised Jacobians J(u) = det del uof u is an element of (over dot(W))(1,dp)(R-d)(d). This extends, from p = 1 to p > 1, a result of Coifman, Lions, Meyer and Semmes about J:. (over dot(W))(1,d)(R-d)(d) -> H-1(R-d), and supports a conjecture of Iwaniec about the solvability of the equation Ju = f is an element of L-p(R-d). (C) 2021 The Author(s). Published by Elsevier Masson SAS.Peer reviewe
Markov Constraints for Generating Lyrics with Style
No full textWe address the issue of generating texts in the style of an
existing author, that also satisfy structural constraints imposed by the
genre of the text. We focus on song lyrics, for which structural constraints
are well-defined: rhyme and meter. Although Markov processes
are known to be suitable for representing style, they are difficult
to control in order to satisfy non-local properties, such as structural
constraints, that require long distance modeling. We show that
the framework of Constrained Markov Processes allows us to precisely
generate texts that are consistent with a corpus, while being
controllable in terms of rhymes and meter, a result that no other technique,
to our knowledge, could achieve to date. Controlled Markov
processes consist in reformulating Markov processes in the context
of constraint satisfaction. We describe how to represent stylistic and
structural properties in terms of constraints in this framework and
we provide an evaluation of our method by comparing it to both pure
Markov and pure constraint-based approaches.We show how this approach
can be used for the semi-automatic generation of lyrics in the
style of a popular author that has the same structure as an existing
son
On p-Dunford integrable functions with values in Banach spaces
No full text[EN] Let (Omega, Sigma, mu) be a complete probability space, X a Banach space and 1 X. Special attention is paid to the compactness of the Dunford operator of f. We also study the p-Bochner integrability of the composition u o f: Omega->Y , where u is a p-summing operator from X to another Banach space Y . Finally, we also provide some tests of p-Dunford integrability by using w*-thick subsets of X¿.Research partially supported by Ministerio de Economia, Industria y Competitividad and FEDER under projects MTM2014-53009-P (J.M. Calabuig), MTM2014-54182-P (J. Rodriguez) and MTM2016-77054-C2-1-P (P. Rueda and E.A. Sanchez-Perez). The second author was also partially supported by project 19275/PI/14 funded by Fundacion Seneca - Agencia de Ciencia y Tecnologia de la Region de Murcia within the framework of PCTIRM 2011-2014.Calabuig, JM.; Rodríguez, J.; Rueda, P.; Sánchez Pérez, EA. (2018). On p-Dunford integrable functions with values in Banach spaces. Journal of Mathematical Analysis and Applications. 464(1):806-822. https://doi.org/10.1016/j.jmaa.2018.04.030S806822464
Ethnogenia brazilica; esboço critico sobre a pre-historia do Brazil e autochtonia polygenista baseado nas recentes descobertas archeologicas da America apresentadas na Exposição anthropologica do Rio de Janeiro em 1882; com dezeseis estampas--caracteres symbolicos, chromos e contornos cranianos.
No full textAt head of title: Dr. F. Ferraz de Macedo."Bibliografia": p. 103.Mode of access: Internet
2. Genetic prothrombotic factors in children with otogenic lateral sinus thrombosis: five case reports
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Genetic prothrombotic factors in children with otogenic lateral sinus thrombosis: five case reports
Author(s): Zangari, P (Zangari, Paola)1; Messia, V (Messia, Virginia)1; Viccaro, M (Viccaro, Marika)2; Bottero, S (Bottero, Sergio)2; Randisi, F (Randisi, Francesco)3; Marsella, P (Marsella, Pasquale)2; Luciani, M (Luciani, Matteo)4; Locatelli, F (Locatelli, Franco)4
Source: BLOOD COAGULATION & FIBRINOLYSIS Volume: 23 Issue: 2 Pages: 158-163 DOI: 10.1097/MBC.0b013e328349cafb Published: MAR 2012
Times Cited: 0 (from Web of Science)
Cited References: 20 [ view related records ] Citation Map
Abstract: Lateral sinus thrombosis (LST) is an uncommon, but life-threatening complication of both acute and chronic otitis media. There is some evidence that acquired or hereditary prothrombotic disorders are risk factors for LST. The aim of this work was to evaluate the role of thrombotic screening, anticoagulant therapy or prophylaxis in patients with either acute or chronic otitis media and LST. The medical records of five children hospitalized at Pediatric Hospital Bambino Gesu of Rome because of acute or chronic otitis media complicated by mastoiditis and LST were reviewed. All children underwent laboratory workup for hypercoagulability. All the five children were found to be heterozygote for the C677T MTHFR mutation and a child presented also heterozygosity for factor V Leiden mutation. They have been successfully treated with anticoagulant therapy without sequels. Children with acute or chronic otitis media may have a prothrombotic tendency that becomes clinically evident because of the inflammatory state. Patients with a family and/or personal history of thrombosis and/or thrombophilic conditions need anticoagulant prophylaxis also in the absence of clear signs of LST. Treatment with low molecular weight is successful in patients with LST. Blood Coagul Fibrinolysis 23:158-163 (C) 2012 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins
Relationships among visual scores with feedlot performance and feed efficiency in Bos indicus cattle.
No full textVisual evaluation of live beef cattle have been largely used to identify more adequate animals for meat production and, in Brazil, even as selection criteria in breeding programs. However, the relationship of these evaluations with feed efficiency traits in feedlot are unknown. The objective of this work was to evaluate phenotypic correlations of visual scores of conformation (C), precocity (P) and muscularity (M) with feedlot performance.Edição dos trabalhos do: ADSA-PSA-AMPA-ASAS-CSAS-WSASAS JOINT ANNUAL MEETING, 2012, Phoenix-AR. Breeding and Genetics: Applications and Methods in Animal Breeding. T5
Envolvimento de Phytophthora cinnamomi no declínio de Quercus suber e Q. rotundifolia: estudo da influência de factores bióticos e abióticos na progressão da doença. Possibilidades de controlo químico do declínio
No full textTese dout., Ciências Agrárias, Universidade do Algarve, 2007Estudou-se a evolução do declínio de sobreiros (Quercus suber) e azinheiras
(Q. rotundifolia) em Portugal e na província de Andaluzia em Espanha. A observação do
sistema radicular das árvores afectadas, revelou muitas raízes necróticas e elevadas
percentagens de raízes absorventes mortas. Das raízes, assim como do solo associado,
isolou-se o oomicete Phytophthora cinnamomi, patogénio radicular de numerosas espécies
lenhosas, entre as quais se encontram espécies mediterrâneas do género Quercus.
Registou-se, em diferentes condições edafo-climáticas, a progressão da incidência e da
severidade do declínio de Q. suber, que aumentaram progressivamente, ao longo de
5 anos.
O estudo de crescimento in vitro dos isolamentos de P. cinnamomi obtidos nas
prospecções em sobreirais e montados, permitiu determinar temperaturas óptimas de
crescimento bastante elevadas (26.9 – 30,1ºC).
O desenvolvimento da infecção por P. cinnamomi foi mais severo em condições de
permanente saturação hídrica do solo. A temperatura não influenciou a infecção. O
método semi-quantitativo da avaliação visual de sintomas foi o que melhor expressou a
severidade da doença, pois permitiu examinar a funcionalidade das raízes, que não era
possível ser detectada com os métodos quantitativos ensaiados.
Avaliou-se o efeito de diferentes substâncias químicas no controlo da infecção em
sobreiros e azinheiras jovens e sobreiros adultos, tendo-se verificado uma grande
variabilidade de eficácia entre si.Fundação para a Ciência e a Tecnologia (FCT
MR2819034 Castillo, René Erlín The Nemytskii operator on bounded p-variation in the mean spaces. Mat. Enseñ. Univ. (N. S.) 19 (2011), no. 1, 31–41. (Reviewer: Pasquale Vetro)
No full textThe author introduces the notion of bounded -variation in the
sense of -norm. Precisely: Let with
. Let be a partion of
if where the supremum is taken over all partitions of
and , then is said to
be of bounded -variation in the mean. The author obtains a Riesz
type result for functions of bounded -variation in the mean and
gives some properties for functions of bounded -variation by
using the Nemytskii operator
- …
