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| Registros recuperados: 24.427 | |
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| Carneiro, Wendell Marcio Araujo; Brainer, Maria Simone de Castro Pereira; Santos, Jose Ailton Nogueira Dos; Souza, Gilzenor Satyro De; Silva, Carlos Enrique Gama E. |
| O objetivo deste artigo é caracterizar o setor agroindustrial de alimentos derivados de cacau no Nordeste Brasileiro. O trabalho foi desenvolvido com base na metodologia de pesquisa descritiva e explicativa, focado na identificação das características e nas inter-relações entre os elos dessa atividade econômica no Nordeste. A agroindústria de derivados de cacau no Nordeste tem se expandido e apresentado maior integração com as cadeias produtivas do setor rural. Porém, o fortalecimento do setor agroindustrial depende, ainda, do fornecimento de matérias-primas com qualidade e regularidade; estabelecimento, disseminação e fiscalização de controles de qualidade e de normas e padrões sanitários; profissionalização de dirigentes nas áreas administrativas e de... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agroindústria; Cacau; Nordeste Brasileiro; Agro-industry; Cacao; Brazilian Northeast; Agribusiness; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/106075 |
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| R. Freimann. |
| Within a continuous development of mobile agricultural machinery the application and further introduction of electronic controls is offering the fare most potential for working processes optimization. The article gives an introduction to tractor and implement controls, especially targeting implement guided tractor control, underlined with two executed examples for this advanced control design. A structured development model and basic knowledge on safe and robust control loop set-ups were developed. Potential conflict scenarios within the multi master control system of driver, tractor, implement and independently... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/934 |
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| Bittig, Henry C.; Maurer, Tanya L.; Plant, Joshua N.; Schmechtig, Catherine; Wong, Annie P. S.; Claustre, Hervé; Trull, Thomas W.; Udaya Bhaskar, T. V. S.; Boss, Emmanuel; Dall’olmo, Giorgio; Organelli, Emanuele; Poteau, Antoine; Johnson, Kenneth S.; Hanstein, Craig; Leymarie, Edouard; Le Reste, Serge; Riser, Stephen C.; Rupan, A. Rick; Taillandier, Vincent; Thierry, Virginie; Xing, Xiaogang. |
| The Biogeochemical-Argo program (BGC-Argo) is a new profiling-float-based, ocean wide, and distributed ocean monitoring program which is tightly linked to, and has benefited significantly from, the Argo program. The community has recommended for BGC-Argo to measure six additional properties in addition to pressure, temperature and salinity measured by Argo, to include oxygen, pH, nitrate, downwelling light, chlorophyll fluorescence and the optical backscattering coefficient. The purpose of this addition is to enable the monitoring of ocean biogeochemistry and health, and in particular, monitor major processes such as ocean deoxygenation, acidification and warming and their effect on phytoplankton, the main source of energy of marine ecosystems. Here we... |
| Tipo: Text |
Palavras-chave: Ocean observation; Ocean biogeochemical cycles; Sensors; Carbon cycle; Ocean optics; Best practices; Argo. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00512/62344/66607.pdf |
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| Greenville, Jared W.; MacAulay, T. Gordon. |
| The use of protected areas as a fishery management tool has been suggested as a hedge against management failures and variation in harvests. A stochastic bioeconomic model of a two-species fishery will be used to test the performance of protected areas as a management tool in a fishery with heterogenous environments. Protected areas are analysed under density-dependent and sink-source dispersal relationships between environments within the fishery. Differing levels of management control over fishery resource extraction are analysed. The model is applied to Manning Bioregion in NSW. The focus of the study is placed on the biological and institutional characteristics that yield benefits to the fishery. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21469 |
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| Ghose, Ananda; Hawkins, Chris. |
| American foulbrood (AFB) is considered the most significant brood disease of bees in Western Australia. The Department of Agriculture of Western Australia (DAWA) provides assistance to apiarists by way of quarantine and surveillance measures under the AFB control program. A bio-economic evaluation was considered necessary by the department for setting future policy direction. As a way forward, a number of risk analysis scenarios were simulated to estimate the future prevalence rate of AFB in the absence of the present program. This epidemiological investigation was complemented by an economic evaluation which identifies the extent of benefit that flows through to direct beneficiaries. The paper provides a comprehensive... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/58449 |
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| Olson, Kent D.; Badibanga, Thaddee Mutumba. |
| Since its first detection in the North Central region in July 2000, the soybean aphid (Aphis glycines Matsamura) has caused considerable loss in soybean (Glycine max L.) yield, bean quality, and producer income. Discovered first in Wisconsin and then in adjoining states, it is currently distributed in 21 US states and parts of Canada. In 2003, over 42 million acres of soybean in the North Central US were infested and over 7 million acres were treated with insecticides to control soybean aphid (Landis et al. 2003). Populations exceeding 24,000 aphids per plant and 40% losses in seed yield have been reported (DiFonzo & Hines 2002). Even prior to the outbreak of 2003, the Soybean Strategic Pest Management Plan identified... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Soybean aphid; Bioeconomic model; Farm Management. |
| Ano: 2005 |
URL: http://purl.umn.edu/19237 |
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| Ribeiro,L.A.; Mariani,P.D.S.C.; Azevedo,J.L.; Rech,E.L.; Schmidt,G.S.; Coutinho,L.L.. |
| Chicken embryos kept in culture medium were bombarded using a high helium gas pressure biolistic device. To optimize the factors that affect transformation efficiency, the lacZ gene under control of the human cytomegalovirus immediate early enhancer/promoter was used as a reporter gene. There was an inverse relationship between survival rate and transformation efficiency. The best conditions obtained for high embryo survival and high transformation efficiency were achieved with 800 psi helium gas pressure, 500 mmHg vacuum, gold particles, an 8 cm DNA-coated microparticle flying distance to the embryo and embryo placement 0.5 cm from the center of the particle dispersion cone. Under these conditions, transformation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biolistic process; Chicken embryo; Gene transfer; SS-galactosidase; Green fluorescent protein; GFP. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900003 |
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| 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,... |
| Tipo: Text |
Palavras-chave: Homeostasis; Perfect adaptation; Regulatory motif; Transcriptional and post-translational regulations. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00434/54598/55968.pdf |
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| Erickson, Jon D.; Schlapfer, Felix. |
| Agronomists consider the continuity and nutrient capturing properties of cover crops as important determinants of nutrient cycling in agricultural systems. Managing for these biotic control functions can help limit nutrient loss and groundwater contamination between main crop harvests. This simulation study highlights the potential role of cover crop management in a welfare economics framework. The objective is to find the optimal combination of nutrient input to the main crop, the extent of off-season cover crops, and crop functional diversity to maximize the sum of benefits from agricultural production and groundwater protection. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/31422 |
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| Gonzalez,L.E.; Parada,M.A.; Tucci,S.; Teneud,L.; Overstreet,D.H.; Hernandez,L.. |
| Breeding for high and low hypothermic responses to systemic administration of a serotonin1A (5-HT1A) receptor agonist (8-hydroxy-2-(di-n-propylamino)tetralin, 8-OH-DPAT) has resulted in high DPAT-sensitive (HDS) and low DPAT-sensitive (LDS) lines of rats, respectively. These lines also differ in several behavioral measures associated with stress. In the present microdialysis study we observed that basal 5-HT concentrations in the prefrontal cortex and dorsal hippocampus did not differ significantly between HDS and LDS rats. Thus, behavioral differences between the HDS and LDS lines might not be attributed to differences in basal 5-HT release. However, both lines had lower basal levels of 5-HT release than their randomly bred |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brain microdialysis; Serotonin; 5-HT1A rat lines; Fenfluramine; 8-OH-DPAT. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000200014 |
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| GITAHY, P. de M.; SOUZA, M. T. de; MONNERAT, R. G.; ARRIGONI, E. de B.; BALDANI, J. I.. |
| Diatraea saccharalis é o inseto-praga que provoca os maiores danos a cultura da cana-de-açúcar, e seu controle é limitado pela localização do ataque no interior do colmo das plantas. Como parte de um projeto a longo prazo com o objetivo de desenvolver uma alternativa eficiente para o controle da broca da cana utilizando as proteínas Cry de Bacillus thuringiensis, o presente trabalho descreve a seleção e caracterização de uma estirpe desta bactéria com atividade larvicida para D. saccharalis. A estirpe brasileira S76, foi selecionada pela alta atividade letal contra larvas da broca, dez vezes maior do que a estirpe comercial HD-1 de B. thuringiensis, com resultados da CL50 de 13.06 µg/L e 143.88 µg/L, respectivamente. Foram observados cristais bipiramidais... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Controle biológico; Bacillus thuringiensis; Diatraea saccharalis; Cana-de-açúcar; Biological control; Sugarcane. |
| Ano: 2000 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/597034 |
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| Gitahy,Patrícia de Medeiros; Souza,Marlene Teixeira de; Monnerat,Rose Gomes; Arrigoni,Enrico de Beni; Baldani,José Ivo. |
| The control of the major sugarcane pest, Diatraea saccharalis, is limited by the stem location of the caterpillar. As part of a long-term project towards the development of an alternative and efficient delivery system of Cry proteins to control the sugarcane borer, the current work describes the selection and characterization of a Brazilian B. thuringiensis strain with prominent activity towards D. saccharalis. Strain S76 was eleven-fold more active than the HD-1 Lepidoptera-standard strain, as estimated by the LC50 of 13.06 µg/L and 143.88 µg/L, respectively. We observed bipiramidal and cuboidal crystals similar to those found in other B. thuringiensis strains with entomopathogenic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Bacillus thuringiensis kurstaki; Cry toxins; Spherical crystal; Diatraea saccharalis. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000300028 |
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| Registros recuperados: 24.427 | |
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