862 research outputs found
A New Genus And Species Of Euptychiina (lepidoptera: Nymphalidae: Satyrinae) From Southern Brazil.
This paper describes a new genus and a new species of Euptychiina from open grassland habitats (campos de cima da serra) in southern Brazil. The systematic position of this new taxon is discussed based on morphological and molecular data, and it is considered sister to Taydebis Freitas. Since the campos vegetation is considered endangered due to anthropogenic activities, this butterfly species deserves attention and should be included in future conservation plans for this biome.40231-
Tipos nomenclaturais de Marantaceae R. BR. depositados no Herbário IAN da Embrapa Amazônia Oriental, Belém, Pará, Brasil.
Tipos nomenclaturais são amostras botânicas utilizadas na descrição original de um novo táxon. Essas amostras são consultas obrigatórias durante a elaboração das revisões taxonômicas e monografias. O Herbário IAN possui aproximadamente 2.500 tipos nomenclaturais; esse número continua crescendo mediante novas análises. O mesmo foi fundado em 1945 pelos botânicos João Murça Pires e William Archer e possui um acervo de aproximadamente 192.500 exsicatas. Este trabalho foca a organização, informatização, classificação e divulgação dos tipos das Marantaceae depositados nesse Herbário. A importância econômica dessa família está ligada à culinária, à ornamentação e ao artesanato. Os exemplares de Marantaceae do acervo foram analisados quanto à possibilidade de se tratar de um espécime tipo e, para cada táxon, foi localizada a obra princeps, através de consulta a sites especializados, busca em bibliotecas e COMUT. Através de consultas a essas obras, os tipos foram classificados seguindo o Código Internacional de Nomenclatura para algas, fungos e plantas. Foram localizados 20 exemplares tipo de Marantaceae distribuídos em dois gêneros e nove espécies. Esses resultados são apresentados em tabela contendo nome do táxon, registro do material no Herbário IAN, coletor e número e categoria (tipificação). A divulgação desses resultados, otimizará a localização dos mesmos durante a elaboração das revisões taxonômicas e monografias, além de maximizar o número de tipos no acervo do IAN
A two-step factorial design for optimization of protein extraction from industrial rapeseed meal after ethanol-assisted reduction of antinutrients
Rapeseed meal is a by-product of oil production with relatively high antinutrient content which limits its application in both feed and food industries. A two-step procedure, including two-level full factorial and central composite designs, was used to assess the influence of five factors namely pH (6 and 12), temperature (20 and 40 degrees C), NaCl concentration (0 and 7.5%), rapeseed meal concentration (2.5 and 5%), and extraction longevity (15 and 60 min) on protein extraction from industrial rapeseed meal subjected to ethanol-assisted reduction of antinutrients. Data demonstrated that pH and its interaction with NaCl influenced protein extractability the most. While still significant, individual effects of NaCl, extraction longevity, temperature and its interaction with pH had a less significant effect on protein yield. Overall. higher protein yields were obtained in response to combining high pH values with low NaCl concentrations, and high pH values with high temperatures. The highest protein yield (59.56 +/- 1.29%) was achieved after extraction of 5% ethanol-treated rapeseed meal at pH 12 with no NaCl addition, at 40 degrees C and extraction longevity of 60 min. A second-order polynomial model for protein yield prediction was generated. The adequacy of the model was verified by coefficient of determination and residual analyses. A high correlation between experimentally obtained and predicted protein yields (R-2 = 0.95) was established. Since extraction conditions are strong determinants of protein characteristics, the predictive model generated in the present work is useful for the selection of factor combinations, which allows for the achievement of optimal protein yield of a product with desired techno-functional properties.info:eu-repo/semantics/publishedVersio
Piezoelectric and optical response of uniaxially stretched (VDF/TrFE) (75/25) copolymer films
The phase diagram of the poly(vinylidene fluoride-trifluorethylene) (P(VDF-TrFE))
copolymer system shows for VDF contents of 50...85 mol% a ferroelectric (FE)-paraelectric (PE)
phase transition below melting temperature. Investigations on P(VDF-TrFE) 75/25 samples
revealed a slight anisotropic behaviour, which leads to a strongly anisotropic stretching effect both
on the phase transition and on the amount and nature of the FE phase in samples subjected to
mechanical stretching along the main directions of the film.
In this work, both the refractive index n1,2 and the piezoelectric coefficient d33 of mechanically
stretched P(VDF-TrFE) have been measured for samples with different levels of permanent
deformation. These parameters are found to reflect the anisotropy of the permanently deformed
samples. The stretching effect is most pronounced (n1,2) or limited (d33) to the vicinity of the
yielding point of the material. Above the yielding point, almost the piezoelectric d33 coefficient of
the non-deformed sample is observed for samples with large permanent deformation.Fundação para a Ciência e a Tecnologia (FCT) - Grants POCTI/CTM/33501/99, POCI/CTM/59425/2004.PIEZOTECH S.A.CRUP (AI-A-16/04)
Avaliação do uso da prostaglandina na sincronização do estro associado ou não ao uso do hCG em cabras.
Resumo: O objetivo deste estudo foi avaliar a eficácia da sincronização do estro sobre os parâmetros ovarianos e comportamentais de cabras da raça Toggenburg. A administração da hCG no inicio do estro é capaz de antecipar a ovulação e promover um aumento no numero de ovulações. Estes resultados devem ser observados para estabelecimento momento ideal para a IA. [Evaluation of the use prostaglandin in synchronization the estrus associated or not the hCG in goats]
Use of nanoparticulate and convencional antimicrobials for treatment of subclinical mastitis in sheep at drying off.
A Generalization of Quantum Stein's Lemma
We present a generalization of quantum Stein's Lemma to the situation in
which the alternative hypothesis is formed by a family of states, which can
moreover be non-i.i.d.. We consider sets of states which satisfy a few natural
properties, the most important being the closedness under permutations of the
copies. We then determine the error rate function in a very similar fashion to
quantum Stein's Lemma, in terms of the quantum relative entropy.
Our result has two applications to entanglement theory. First it gives an
operational meaning to an entanglement measure known as regularized relative
entropy of entanglement. Second, it shows that this measure is faithful, being
strictly positive on every entangled state. This implies, in particular, that
whenever a multipartite state can be asymptotically converted into another
entangled state by local operations and classical communication, the rate of
conversion must be non-zero. Therefore, the operational definition of
multipartite entanglement is equivalent to its mathematical definition.Comment: 30 pages. (see posting by M. Piani arXiv:0904.2705 for a different
proof of the strict positiveness of the regularized relative entropy of
entanglement on every entangled state). published version
A new and rare actinote hübner (Lepidoptera : Nymphalidae: Heliconiinae : Acraeini) from southeastern Brazil
The present paper describes a new species of Actinote (Nymphalidae, Heliconiinae, Acraeini), Actinote keithbrowni Freitas, Francini & Mielke sp. nov., from southeastern Brazil, based on morphological and molecular data. The new species is very similar in wing pattern to Actinote eberti, within what we term the “light-gray mimicry complex.” The host plants and immature stages of the new species are unknown. Actinote keithbrowni sp. nov. is one of the rarest species of Actinote from Brazil: in total, only eight individuals of this species are known from a narrow region of the Itatiaia massif despite years of collecting effort in that region since the 1940s495696703CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP303834/2015-3; 304639/2014-20012011/50225-3; 2013/50297-0; 2015/24663-4AVLF acknowledges support from Fundação de Amparo à Pesquisa do Estado de São Paulo – (FAPESP) (Biota-Fapesp grants 2011/50225-3, 2013/50297-0) and from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (303834/2015-3). LMM acknowledges FAPESP (PhD scholarship - 2015/24663-4). AHBR thanks Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brazil (CAPES) - Finance Code 001. OHHM acknowledges support from the – CNPq (304639/2014-2
Possíveis impactos do projeto: "Uso de sêmen resfriado e inseminação artificial em caprinos leiteiros na República de Cabo Verde".
Resumo - Este artigo procura discutir o contexto do projeto ?Uso de sêmen resfriado e inseminação artificial em caprinos leiteiros na República de Cabo Verde?, suas implicações no sistema de criação de caprinos leiteiros, bem como seu impacto nos planos social, ambiental e econômico. Possible impacts of the project: "use of chilled semen and artificial insemination in dairy goats on Cape Verde Republic?. Abstract - This article intent to discuss the aspects involved in the project ?Use of chilled semen and artificial insemination in dairy goats on Cape Verde Republic? their implications on dairy goats rearing and also, the social, the economic, and the environmental impacts.Anais do 15o. Simpósio Paranaense de Ovinocultura, 3o. Simpósio Paranaense de Caprinocultura, 3o. Simpósio Sul Brasileiro de Ovinos e Caprinos, Pato Branco, PR, out., 2011
Entanglement as a quantum order parameter
We show that the quantum order parameters (QOP) associated with the
transitions between a normal conductor and a superconductor in the BCS and
eta-pairing models and between a Mott-insulator and a superfluid in the
Bose-Hubbard model are directly related to the amount of entanglement existent
in the ground state of each system. This gives a physical meaningful
interpretation to these QOP, which shows the intrinsically quantum nature of
the phase transitions considered.Comment: 5 pages. No figures. Revised version. References adde
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