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A mean-field Babcock-Leighton solar dynamo model with long-term variability Anais da ABC (AABC)
SANCHEZ,SABRINA; FOURNIER,ALEXANDRE; PINHEIRO,KATIA J.; AUBERT,JULIEN.
Dynamo models relying on the Babcock-Leighton mechanism are successful in reproducing most of the solar magnetic field dynamical characteristics. However, considering that such models operate only above a lower magnetic field threshold, they do not provide an appropriate magnetic field regeneration process characterizing a self-sustainable dynamo. In this work we consider the existence of an additional α-effect to the Babcock-Leighton scenario in a mean-field axisymmetric kinematic numerical model. Both poloidal field regeneration mechanisms are treated with two different strength-limiting factors. Apart from the solar antisymmetric parity behavior, the main solar features are reproduced: cyclic polarity reversals, mid-latitudinal equatorward migration of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solar dynamo; Solar cycle; Sunspots; Magnetohydrodynamics.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100011
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A mecanização e a sustentabilidade como componente de desenvolvimento para os fornecedores de cana. Repositório Alice
ZORZO, C. R. B.; SACRAMENTO, J.; TORQUATO, S. A.; JESUS, K. R. E. de.
Resumo: A pressão da sociedade que exige produtos agrícolas com melhor qualidade e ecologicamente corretos levou o setor canavieiro a buscar o fim da queima dos canaviais e a adotar medidas ambientais e sociais sustentáveis que culminaram na mecanização do sistema em áreas tradicionais, como no estado de São Paulo, e de expansão, nos estados do Centro-Oeste. As máquinas começam a fazer parte do cenário de produção dos principais envolvidos no setor, os usineiros e os fornecedores. Esses últimos são cruciais ao setor devido à grande quantidade de matéria prima que produzem, mas o alto custo de produção, as exigências ambientais e o baixo preço dos subprodutos têm dificultado a sua permanência. Considerando o cenário de expansão e adequação as normas...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Fornecedores; Áreas de expansão; Sustentabilidade; Cana de açúcar; Mecanização agrícola; Agricultura sustentável; Sugarcane; Mechanical harvesting.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1011612
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A meliponicultura como prática educacional: abelhas sem ferrão ensinam crianças e adultos sobre conservação e uso sustentável dos recursos naturais. Repositório Alice
LEÃO, K. S.; VEIGA, J. C.; QUEIROZ, A. C. M.; GOMES, J. T.; CORDEIRO, H. K. C.; SILVA, K. L.; TEIXEIRA, J. C. S.; MENEZES, C..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Meliponicultura; Abelha sem ferrão; Conservação; Prática educacional; Uso sustentável.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1010143
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A meta-analysis of probiotics for preventing necrotizing enterocolitis in preterm neonates BJMBR
Yang,Y.; Guo,Y.; Kan,Q.; Zhou,X.G.; Zhou,X.Y.; Li,Y..
Necrotizing enterocolitis (NEC) is one of the most common acquired diseases of the gastrointestinal tract in preterm infants. Some randomized, controlled trials (RCTs) have indicated that probiotics may potentially lower the incidence of NEC and mortality. However, debate still remains about the safety of probiotics and their influence on normal infant growth. We performed this meta-analysis to assess the safety and benefits of probiotic supplementation in preterm infants. We searched in PubMed, Embase, and Cochrane databases for English references, and in Wanfang, VIP, and CNKI databases for Chinese references. Ultimately, 27 RCTs (including 9 Chinese articles) were incorporated into this meta-analysis. Relative risk (RR) and weighted mean difference...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Necrotizing enterocolitis; Probiotics; Meta-analysis; Preterm.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000900804
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A method for the deliberate and deliberative selection of policy instrument mixes for climate change adaptation Ecology and Society
Mees, Heleen L. P.; Copernicus Institute of Sustainable Development, Utrecht University; h.l.p.mees@uu.nl; Dijk, Justin; IVM and Department of Spatial Economics, VU University Amsterdam; justin.dijk@vu.nl; van Soest, Daan; Department of Economics and Tilburg Sustainability Center, Tilburg University; d.p.vansoest@tilburguniversity.edu; Driessen, Peter P. J.; Copernicus Institute of Sustainable Development, Utrecht University; p.driessen@uu.nl; van Rijswick, Marleen H. F. M. W.; Utrecht Center for Water, Oceans and Sustainability Law, Utrecht University; H.vanRijswick@uu.nl; Runhaar, Hens; Copernicus Institute of Sustainable Development, Utrecht University; H.A.C.Runhaar@uu.nl.
Tipo: Peer-Reviewed Reports Palavras-chave: Adaptation to climate change; Local governance; Method; Policy instrument selection.
Ano: 2014
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A method to estimate the biomass of Spirulina platensis cultivated on a solid medium BJM
Pelizer,Lúcia Helena; Moraes,Iracema de Oliveira.
This paper presents a method to estimate the biomass of Spirulina cultivated on solid medium with sugarcane bagasse as a support, in view of the difficulty in determining biomass concentrations in bioprocesses, particularly those conducted in semi-solid or solid media. The genus Spirulina of the family Oscillatoriaceae comprises the group of multicellular filamentous cyanobacteria (blue-green microalgae). Spirulina is used as fish feed in aquaculture, as a food supplement, a source of vitamins, pigments, antioxidants and fatty acids. Therefore, its growth parameters are extremely important in studies of the development and optimization of bioprocesses. For studies of biomass growth, Spirulina platensis was cultured on solid medium using sugarcane bagasse...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spirulina platensis; Solid state cultivation; Estimative of biomass; Sugarcane bagasse; Protein content.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300024
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A methodology for the sustainability assessment of agri-food systems: an application to the Slow Food Presidia project. Ecology and Society
Peano, Cristiana; Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Turin, Italy; cristiana.peano@unito.it; Migliorini, Paola; University of Gastronomic Sciences, Pollenzo, Italy; p.migliorini@unisg.it; Sottile, Francesco; Dipartimento di Scienze Agrarie e Forestali, University of Palermo, Italy; francesco.sottile@unipa.it.
New and alternative models for agri-food production and consumption have brought up questions regarding the effects they have on local development processes in terms of the economic exploitation of rural areas as well as environmental, cultural, and social factors. The agri-food system proposed by the Slow Food (SF) Presidia Project, which focuses on farm-to-market systems for local, high-quality, sustainable products, can respond to the new and emerging needs of both rural and urban populaces via several approaches in addition to food production itself. However, evaluating these parameters is challenging. The aim of this study was to develop an indicator-based tool to monitor the sustainability in agri-food systems that considers quality as well as...
Tipo: Peer-Reviewed Reports Palavras-chave: Agricultural and food systems; Indicators; Slow Food; Sustainability evaluation.
Ano: 2014
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A Michaelis–Menten type equation for describing methylmercury dependence on inorganic mercury in aquatic sediments ArchiMer
Cossa, Daniel; Garnier, Cedric; Buscail, Roselyne; Elbaz-poulichet, Francoise; Mikac, Nevenka; Patel-sorrentino, Nathalie; Tessier, Erwan; Rigaud, Sylvain; Lenoble, Veronique; Gobeil, Charles.
Methylation of mercury (Hg) is the crucial process that controls Hg biomagnification along the aquatic food chains. Aquatic sediments are of particular interest because they constitute an essential reservoir where inorganic divalent Hg (HgII) is methylated. Methylmercury (MeHg) concentrations in sediments mainly result from the balance between methylation and demethylation reactions, two opposite natural processes primarily mediated by aquatic microorganisms. Thus, Hg availability and the activity of methylating microbial communities control the MeHg abundance in sediments. Consistently, some studies have reported a significant positive correlation between MeHg and HgII or total Hg (HgT), taken as a proxy for HgII, in aquatic sediments using...
Tipo: Text Palavras-chave: Mercury; Methylmercury; Aquatic sediment; Methylation; Demethylation.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00171/28220/26520.pdf
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A Microarray-Based Analysis of Gametogenesis in Two Portuguese Populations of the European Clam Ruditapes decussatus ArchiMer
Sousa, Joana; Milan, Massimo; Bargelloni, Luca; Pauletto, Marianna; Matias, Domitilia; Joaquim, Sandra; Matias, Ana Margarete; Quillien, Virgile; Leitao, Alexandra; Huvet, Arnaud.
The European clam, Ruditapes decussatus is a species with a high commercial importance in Portugal and other Southern European countries. Its production is almost exclusively based on natural recruitment, which is subject to high annual fluctuations. Increased knowledge of the natural reproductive cycle of R. decussatus and its molecular mechanisms would be particularly important in providing new highly valuable genomic information for better understanding the regulation of reproduction in this economically important aquaculture species. In this study, the transcriptomic bases of R. decussatus reproduction have been analysed using a custom oligonucleotide microarray representing 51,678 assembled contigs. Microarray analyses were performed in four gonadal...
Tipo: Text
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00188/29935/28623.pdf
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A microbiological and biogeochemical investigation of the cold seep tubeworm Escarpia southwardae (Annelida: Siboglinidae): Symbiosis and trace element composition of the tube ArchiMer
Duperron, Sebastien; Gaudron, Sylvie M.; Lemaitre, Nolwenn; Bayon, Germain.
Tubeworms within the annelid family Siboglinidae rely on sulfur-oxidizing autotrophic bacterial symbionts for their nutrition, and are among the dominant metazoans occurring at deep-sea hydrocarbon seeps. Contrary to their relatives from hydrothermal vents, sulfide uptake for symbionts occurs within the anoxic subsurface sediment, in the posterior ‘root’ region of the animal. This study reports on an integrated microbiological and geochemical investigation of the cold seep tubeworm Escarpia southwardae collected at the Regab pockmark (Gulf of Guinea). Our aim was to further constrain the links between the animal and its symbiotic bacteria, and their environment. We show that E. southwardae harbors abundant sulfur-oxidizing bacterial symbionts in its...
Tipo: Text Palavras-chave: Sulfur-oxidizing bacteria; RTCA; Trace elements; RubisCO; Symbiosis.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00191/30251/28683.pdf
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A mixed-methods analysis of social-ecological feedbacks between urbanization and forest persistence Ecology and Society
BenDor, Todd; University of North Carolina at Chapel Hill; bendor@unc.edu; Shoemaker, Douglas A.; North Carolina State University; douglas.shoemaker@gmail.com; Thill, Jean-Claude; University of North Carolina at Charlotte; Jean-Claude.Thill@uncc.edu; Dorning, Monica A.; North Carolina State University; madorning@gmail.com; Meentemeyer, Ross K.; North Carolina State University; ross_meentemeyer@ncsu.edu.
We examined how social-ecological factors in the land-change decision-making process influenced neighboring decisions and trajectories of alternative landscape ecologies. We decomposed individual landowner decisions to conserve or develop forests in the rapidly growing Charlotte, North Carolina, U.S. region, exposing and quantifying the effects of forest quality, and social and cultural dynamics. We tested the hypothesis that the intrinsic value of forest resources, e.g., cultural attachment to land, influence woodland owners’ propensity to sell. Data were collected from a sample of urban, nonindustrial private forest (U-NIPF) owners using an individualized survey design that spatially matched land-owner responses to the ecological and timber...
Tipo: Peer-Reviewed Insight Palavras-chave: Forest persistence; Land-use change; Social-ecological feedbacks; Tax policy; Urban forests; Urbanization.
Ano: 2014
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A Model Analysis for the Design and Deployment of an Eulerian Sediment Trap Mooring Array in a Western Boundary Upwelling System from Southeast Brazil Anais da ABC (AABC)
MENDOZA,URSULA; CANDELLA,ROGÉRIO N.; ASSAD,LUIZ P.F.; CASTILLO,FEDERICO V.; AZEVEDO,LAURA; KNOPPERS,BASTIAAN A.; ALBUQUERQUE,ANA LUIZA S..
This work addresses the design and configuration of a Eulerian sediment trap mooring array, which was deployed at the shelf edge (zm ≈ 140 m) 80 km off Cabo Frio, SE- Brazil (23° S). The site was subject to interplay between the Tropical Waters (TW) of the Brazil Current (BC), intrusions from the South Atlantic Central Waters (SACW), which are the source of upwelling in the region, and other oceanographic processes. Detailed computations were used to optimize the total weight, buoyancy balance, and maximum acceptable tilt to avoid hydrodynamic bias in the trapping efficiency and array adaptation to the local oceanographic conditions with the assistance of Matlab and Muringa programs and Modular Ocean Model 4.0 (MOM; i.e., to assert the vertical...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Design; Mooring array; Sediment traps; Trap efficiency; Cabo Frio upwelling; SE-Brazil.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200589
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A model of the dynamics of cattle systems stypes to study greenhouse gases mitigation in the brazilian conditions. Repositório Alice
MOREIRA, J. M. M. A. P.; BARIONI, L. G.; FASIABEN, M. do C. R.; OLIVEIRA, A. F.; SILVA, R. D. O..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Gases de efeito estufa; Mitigação; Aquecimento global.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/989497
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A model of the dynamics of cattle systems types to study greenhouse gases mitigation in the Brazilian conditions. Repositório Alice
MOREIRA, J. M. M. A. P.; BARIONI, L. G.; FASIABEN, M. do C. R.; OLIVEIRA, A. F.; SILVA, R. D. O..
This work reports on the development of a multiperiod linear programming model to optimize private profitability of the trajectories of land use of the most representative types of cattle production systems in Brazil.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Gado de corte; Sistema de produção; Cattle.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/988775
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A modeling study of the processes of surface salinity seasonal cycle in the Bay of Bengal ArchiMer
Akhil, V. P.; Durand, Fabien; Lengaigne, Matthieu; Vialard, Jerome; Keerthi, M. G.; Gopalakrishna, V. V.; Deltel, Charles; Papa, Fabrice; De Boyer Montegut, Clement.
In response to the Indian Monsoon freshwater forcing, the Bay of Bengal exhibits a very strong seasonal cycle in sea surface salinity (SSS), especially near the mouths of the Ganges-Brahmaputra and along the east coast of India. In this paper, we use an eddy-permitting (∼25 km resolution) regional ocean general circulation model simulation to quantify the processes responsible for this SSS seasonal cycle. Despite the absence of relaxation toward observations, the model reproduces the main features of the observed SSS seasonal cycle, with freshest water in the northeastern Bay, particularly during and after the monsoon. The model also displays an intense and shallow freshening signal in a narrow (∼100 km wide) strip that hugs the east coast of India, from...
Tipo: Text
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00197/30819/29189.pdf
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A Morphometric Study on the Skull of Donkey (Equus asinus) International Journal of Morphology
Zhu,Lei; Shi,XiaoDong; Wang,JunJie; Chen,JianGang.
The present study was carried out on a number of 16 skulls of adult male domestic donkeys. Craniometric measurements for 40 different parts of the skulls were made. All investigated features were expressed as Mean±SD. Cephalic indices and ratios were calculated by using the investigated features. The craniometric measurements and cephalic indices had been compared with those of local horses and ponies. A skull length of 443.07±53.57 mm and a maximum zygomatic width of 169.09±17.64 mm were obtained. The size of donkey skull was between those of local horses and ponies. A skull index of 38.23±0.85, a cranial index of 45.01±2.83 and a facial index of 67.80±3.79 were obtained. Cranial index and skull index were found to be close in value to that of local...
Tipo: Journal article Palavras-chave: Skull; Donkey; Craniometry.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400030
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A MOSCA dos vírus: pesquisa monitora mosca-branca na cultura do tomate. Infoteca-e
bitstream/item/176670/1/edicao-12.pdf
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Desidratação de hortaliça; Praga de Planta; Inseto; Tomate; Herbicida; Agricultura Familiar.
Ano: 2014 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1091363
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A mouse air pouch model for evaluating the immune response to Taenia crassiceps infection. Repositório Alice
GASPAR, E. B.; SAKAI, Y. I.; GASPARI, E. de.
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Resposta imunológica; Helminto; Cisticercose.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/979466
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A mudança de uma aldeia indígena e seu impacto na evolução da mandioca - Manihot esculenta. Repositório Alice
FREITAS, F. de O..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Diversidade Genética; Evolução; Aldeia indígena; Mandioca.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1001179
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A multicriteria model to assess tractors used in family agriculture REA
Reis,Ângelo V. dos; Machado,Antônio L. T.; Gomes,Mário C.; Andersson,Norberto L. M.; Machado,Roberto L. T..
In recent years, public policy has been offering subsidized credit for machine purchase to family farmers. However, there is no methodological procedure to select a suitable tractor for these farmers' situation. In this way, we aimed to develop a selection model for smallholder farmers from Pelotas city region in the state of Rio Grande do Sul. Building a multicriteria model to aid decisions is divided into three main stages: structuring stage (identifying stakeholders, decisional context and model creation), evaluation stage (stakeholder preference quantification) and recommendation stage (choice selection). The Multicriteria method is able to identify and value the criteria used in tractor selection by regional family farmers. Six main evaluation areas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Machine selection; Small farms; MCDA; PRONAF.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400012
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