|
|
|
| Registros recuperados: 9.251 | |
|
| |
|
| |
|
|
| SANTOS, F. C. dos; MENDES, S. M.; SILVA, A. F. da; SILVA, D. D. da; PASSOS, A. M. A. dos; RESENDE, R. M. S.; PESSOA, S. T.; PIMENTEL, M. A. G.; OLIVEIRA, I. R. de; RODRIGUES, J. A. S.; CHAVES, F. F.; BORGHI, E.; LANDAU, E. C.; COTA, L. V.; RESENDE, A. V. de; ALBUQUERQUE FILHO, M. R. de; GUIMARAES, D. P.; VIANA, P. A.; KARAM, D.; NOCE, M. A.; FIGUEIREDO, A. B. A. de; BRANDAO, A. L.. |
| No mês de novembro de 2017, foi iniciado um projeto de pesquisa entre a Embrapa Milho e Sorgo e a Fazenda Trijunção, com previsão de trabalho em parceria por cinco anos de duração. Dentre as ações do projeto, com foco em ?intensificação agrícola visando a sustentabilidade do uso de solos arenosos?, foi realizado o Circuito Solos Arenosos da Região Cocos-Jaborandi, com a finalidade de realizar um levantamento dos sistemas de produção das lavouras e da pecuária com foco nas práticas de manejo que vêm sendo utilizadas nas propriedades agrícolas da região do Oeste baiano, notadamente envolvendo os municípios de Cocos, Jaborandi, Mambaí e Sítio da Abadia. Esse diagnóstico permitiu identificar as principais tendências tecnológicas do agronegócio, as demandas em... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Sustentabilidade; Sistema de Produção; Manejo do Solo; Produtividade. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1092338 |
| |
|
| |
|
| |
|
|
| Deggerone, Zenicleia Angelita; Oliveira, Carlos Alberto Oliveira de. |
| Este trabalho se dedica a compreender de que modo as organizações cooperativas participam da sucessão geracional em propriedades rurais familiares, localizadas na região do Conselho Regional de Desenvolvimento Norte (Corede Norte), no Rio Grande do Sul. Para atender ao objetivo proposto, a pesquisa apresenta uma abordagem metodológica do tipo exploratória e descritiva, que utilizou métodos quantitativos e qualitativos para a coleta das informações em 11 cooperativas agropecuárias. Os resultados da pesquisa revelam que a saída dos jovens do campo é motivada, segundo os gestores das cooperativas, pela falta de diálogo na família, o que tem causado disputas em torno da tomada de decisão nas propriedades rurais. E, para tentar reverter essa condição, os... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultura familiar; Cooperativas; Jovens; Sucessão geracional. |
| Ano: 2018 |
URL: http://periodicos.ufsm.br/extensaorural/article/view/30340 |
| |
|
|
| Mairet, Francis. |
| Homeostasis is the capacity of living organisms to keep internal conditions regulated at a constant level, despite environmental fluctuations. Integral feedback control is known to play a key role in this behaviour. Here, I show that a feedback system involving transcriptional and post-translational regulations of the same executor protein acts as a proportional integral (PI) controller, leading to enhanced transient performances in comparison with a classical integral loop. Such a biomolecular controller-which I call a level and activity-PI controller (LA-PI)-is involved in the regulation of ammonium uptake by Escherichia coli through the transporter AmtB. The P-II molecules, which reflect the nitrogen status of the cell, inhibit both the production of... |
| Tipo: Text |
Palavras-chave: Homeostasis; Perfect adaptation; Regulatory motif; Transcriptional and post-translational regulations. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00434/54598/55968.pdf |
| |
|
| |
|
| |
|
| |
|
|
| Xia,H.; Ye,J.; Wang,L.; Zhu,J.; He,Z.. |
| Glutathione synthetase deficiency (GSSD) is a rare inborn error of glutathione metabolism with autosomal recessive inheritance. The severe form of the disease is characterized by acute metabolic acidosis, usually present in the neonatal period with hemolytic anemia and progressive encephalopathy. A case of a male newborn infant who had severe metabolic acidosis with high anion gap, hemolytic anemia, and hyperbilirubinemia is reported. A high level of 5-oxoproline was detected in his urine and a diagnosis of generalized GSSD was made. DNA sequence analysis revealed the infant to be compound heterozygous with two mutations, c.738dupG in exon 8 of GSS gene resulting in p.S247fs and a repetitive sequence in exon 3 of GSS gene. Treatment after diagnosis of GSSD... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Glutathione synthetase; 5-oxoprolinuria; Newborn; Metabolism; Mutation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000300501 |
| |
|
| |
|
|
| Lu, Yiru; Zhang, Biao; Perrie, William; Mouche, Alexis; Li, Xiaofeng; Wang, He. |
| A new geophysical model function (GMF), called C_SARMOD2, has been developed to relate high-resolution C-band normalized radar cross section (NRCS), acquired in VV polarization over the ocean, to the 10-m height wind speed. A total of 3078 RADARSAT-2 and Sentinel-1A VV-polarized synthetic aperture radar (SAR) images, acquired under different wind speed conditions, were collocated with in situ buoy measurements. The paired dataset was used to derive transfer functions and coefficients of C_SARMOD2, and then to validate the wind speed retrievals. The comparison between SAR-retrieved wind speeds and buoy measurements show almost no bias and a root mean square error of 1.84 m/s. Two representative quad-and dual-polarization SAR images, acquired from coastal... |
| Tipo: Text |
Palavras-chave: Coastal wind speed; Geophysical model function (GMF); Synthetic aperture radar (SAR). |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00452/56390/60555.pdf |
| |
|
|
| Ferreira,André da Silva; Almeida,Lúcia M.; Bravo,Freddy; Grossi,Paschoal Coelho. |
| Abstract A list of species of Rutelinae from Bahia state, Northeastern Brazil, is presented. The list is based on specimens deposited in Brazilian collections. The list includes 4 tribes, 23 genera, 101 species and 17 subspecies. The genera Byrsopolis Burmeister, 1844, Pseudodorysthetus Soula, 2008 and Trizogeniates Ohaus, 1917 are recorded for the first time in Bahia and Northeastern Brazil. Thirty species are newly recorded in Bahia: Areoda espiritosantensis Ohaus, 1905, B. laticollis Burmeister, 1855, Bolax flavolineata (Mannerheim, 1829), Chlorota abdominalis Ohaus, 1926, C. espiritosantensis Ohaus, 1912, Dorysthetus espiritosantensis Ohaus, 1905, D. fulgidus (Waterhouse, 1881), Leucothyreus acanthurus Ohaus, 1917, L. albopilosus Ohaus, 1917, L.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: New records; Northeastern Brazil; Species list. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200301 |
| |
|
|
| Santos,Érika; Gomes Jr,Edivaldo; Rocha,Clélia M. C. da; Bartels,Paul J.; Fontoura,Paulo. |
| ABSTRACT Batillipes specimens collected in the Southwestern Atlantic Ocean, on the Brazilian Coast (Campos Basin and Potiguar Basin) with a bifurcated caudal appendage similar to B. dicrocercus Pollock, 1970 were assigned to B. potiguarensis Santos, da Rocha, Gomes Jr & Fontoura, 2017. This species was described as having a roundish caudal protrusion but, as shown in this study, it exhibits intraspecific variability of the morphology of the caudal apparatus. The examination of specimens of B. dicrocercus from the type locality (Massachussetts, U.S.A.) and the analysis of the original description and two subsequent emended descriptions, one from the Gulf of Mexico (U.S.A.) and another from the Mediterranean Sea, used for comparison, revealed important... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Batillipedidae; Biogeography; Meiofauna; Atlantic Ocean; Taxonomy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100241 |
| |
|
|
| Liu, Yi-wei; Eagle, Robert A.; Aciego, Sarah M.; Gilmore, Rosaleen E.; Ries, Justin B.. |
| Ocean acidification will potentially inhibit calcification by marine organisms; however, the response of the most prolific ocean calcifiers, coccolithophores, to this perturbation remains under characterized. Here we report novel chemical constraints on the response of the widespread coccolithophore species Ochrosphaera neapolitana (O. neapolitana) to changing-CO2 conditions. We cultured this algae under three pCO(2)-controlled seawater pH conditions (8.05, 8.22, and 8.33). Boron isotopes within the algae's extracellular calcite plates show that this species maintains a constant pH at the calcification site, regardless of CO2-induced changes in pH of the surrounding seawater. Carbon and oxygen isotopes in the algae's calcite plates and carbon isotopes in... |
| Tipo: Text |
|
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00452/56323/72132.pdf |
| |
|
|
| Shafaei, Seyed Mojtaba; Loghavi, Mohammad; Kamgar, Saadat. |
| This paper communicates the prediction of required draft force of disk plow implement during tillage operations. The well-known mathematical model proposed by American Society of Agricultural and Biological Engineers (ASABE), multiple linear regression (MLR) and data mining model, based on artificial neural network (ANN), were employed for this purpose. The input variables of the models were considered as forward speed of 2-6 (km/h) and plowing depth of 10-30 (cm). The development details of the models are documented in the paper. On account of statistical performance criteria, the best ANN model with coefficient of determination of 0.971, root mean square error of 0.762 (kN), mean absolute percentage error of 1.886 (%) and mean value of absolute... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4466 |
| |
|
|
| J. SIMÃO,MARIELA; J.S. BARBOZA,THIAGO; G. VIANNA,MARCELA; GARCIA,RENATA; MANSUR,ELISABETH; P.R. IGNACIO,ANA CLAUDIA; PACHECO,GEORGIA. |
| Abstract Passiflora species are well known for their common use in popular medicine for the treatment of several diseases, such as insomnia, anxiety, and hysteria, in addition to their anti-inflammatory, antioxidant, analgesic and antibacterial potential. However, few data about the chemical composition and the medicinal potential of in vitro derived materials are available. Therefore, the goal of this work was to compare, for the first time, the phytoconstituents of in vitro derived materials of four Passiflora species, and evaluate the antibacterial potential of their extracts against 20 Gram-positive and negative strains. Chromatographic analysis indicated the presence of saponins in roots extracts from all studied species, whereas leaf extracts... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Chromatography; Flavonoids; Passiflora; Saponins. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602805 |
| |
|
| |
|
|
| Van Der Heijden, Marcel; Wittwer, Raphael; Jossi, Werner; Prechsl, Ulrich; Nemecek, Thomas; Schläppi, Klaus; Hagen, Emily O.; Keller, Thomas; Walder, Florian; Büchi, Lucie; Charles, Raphael; Colombi, Tino; Hess, Julia; Hirte, Juliane; Mayer, Jochen; Loiaza, Viviana; Pujol-Pereira, Engil; Six, Jo; Dennert, Francesca; Maurhofer, Monika; Seitz, Steffen. |
| One of the primary challenges of our time is develop sustainable farming systems that can feed the world with minimal environmental impact. Some studies argue that organic farming systems are best because these have minimal impact on the environment and are positive for biodiversity. Others argue that no-tillage systems are better because such systems save energy and preserve soil structure and quality. A third group argues that conventional farming systems are best because yield per hectare is highest. However, so far, systematic comparisons of major arable production systems are rare and often it is difficult to compare the advantages and disadvantages of farming systems in a systematic way due to differences in soil/site characteristics and management.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Food security; Food quality and human health Soil tillage. |
| Ano: 2018 |
URL: http://orgprints.org/34561/1/vanderheijden-etal-2018ESA2018_FinalAbstractBook_p45.pdf |
| |
| Registros recuperados: 9.251 | |
|
|
|
