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| Registros recuperados: 65 | |
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| COSTA FILHO, P. P.; FERREIRA, C. A. P.. |
| A exploração florestal mecanizada na floresta tropical úmida, por ser uma operação bastante complexa, em alguns aspectos, exige ainda muitos cuidados na planificação e organização das operações. Assim, neste trabalho, relata-se alguns problemas referentes ao setor florestal na Amazônia, destacando-se, de modo especial, aqueles referentes à "racionalização das atividades de exploração florestal", visando o rendimento sustentado dos recursos florestais. É feita uma comparação entre as atividades de exploração realizadas na forma tradicional, com as atividades desenvolvidas pelas várias pesquisas realizadas na região, as quais já possuem resultados. Procura-se, também, analisar a situação florestal na região amazônica, mostrando que é possível realizar a... |
| Tipo: Parte de livro |
Palavras-chave: Exploração mecanizada; Brasil; Forest exploitation; Natural resource; Costs; Forest inventories; Transport; Mechanized explotation; Custo; Exploração Florestal; Inventário Florestal; Recurso Florestal; Transporte; Amazonia; Mechanization. |
| Ano: 1996 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/394933 |
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| Urbinati,Elisabeth Criscuolo; Carneiro,Paulo César Falanghe. |
| The addition of salt to the water has been used to mitigate stress and improve survival in fishes. This study investigated the effects of sodium chloride (0.0, 1.0, 3.0 and 6.0 g/l) on levels of plasma cortisol, glucose, tryacilglycerol, total protein, hematocrit, hemoglobin, erythrocyte number, liver glycogen and lipid, and muscle lipid in adult matrinxã(Brycon amazonicum) after a 4-h transport and during a 96-h recovery period. Fish were sampled before and after transport, and 24 and 96 h of the recovery period. Plasma cortisol was higher than initial condition immediately after transportation, except in fish transported in 3.0 and 6.0 g/l of salt. A similar pattern was observed for blood glucose but fish transported in water with 0.0, 1.0 and 3.0 g/l of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salt; Transport; Metabolism. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000400020 |
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| Nozdrovicky, Ladislav. |
| In conditions of the agriculture in Slovak republic the straw, obtained as a by-product from cereals cropping systems, has a growing potential to be used as an important renewable energy source. This trend is fully consistent with the energy policy of the European Union, which aims to reduce the negative environmental impacts of fossil fuel use. The aim of the presented paper was to evaluate technical and economic effects of the using of the system for processing of straw including straw baling, transport and handling of the straw bales. During the years 2010-2012 the field experiments have been conducted in conditions of the large-scale farm (2770 ha of arable land). For the straw baling, transport and handling of the straw bales there is used a machinery... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Straw for energy purposes; Straw baling; Transport; Handling; Economical effects. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3098 |
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| Melo Júnior,Mauro de; Schwamborn,Ralf; Neumann-Leitão,Sigrid; Paranaguá,Maryse N.. |
| The influence of tidal and diel changes on the exchange of Petrolisthes armatus planktonic larvae was studied at the Catuama inlet, which represents an intermediate system of marine and estuarine environments in the Northeast Brazil. To characterize the larval abundance and vertical distribution, samplings were carried out in August 2001 at neap tide and 3 stations, with 3 hours interval over 24 hours. Samples were taken at three or two depths at each station, with a plankton pump coupled to a 300 µm mesh size net. Petrolisthes armatus zoea I and II showed a mean of 26.3 ± 83.6 and 12 ± 38.8 ind m-3, respectively. During flood tides, the larvae were more concentrated in the midwater and surface, which avoided the transport to internal regions. In contrast,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Northeast Brazil; Decapod larvae; Petrolisthes armatus; Estuarine inlet; Transport; Zooplankton. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100009 |
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| Silva,C.L.Á.; Silva Filho,J.M.; Palhares,M.S.; Machado,G.S.; Moraes,M.P.; Rocha,N.M.; Carvalho,L.E.; Rossi,R.. |
| Semen from the first 15mL of the ejaculate (P1) obtained from two boars (30mL) was diluted in glycine-egg yolk extender, cooled at 5°C in a special container and rediluted in standard doses of 3x109 mobile spermatozoa after 12h of storage. Semen was also stored up to 24h after redilution. The physical characteristics of the semen were evaluated at different storage periods (fresh, 0h, 12h, rediluted, 24h, and 36h). The reproductive performance of the boars and their fertility regarding the insemination of primiparous sows were also determined. Two treatments were used: T1-15B sows inseminated with semen originated from hyperconcentrated heterospermic doses (15x109 mobile spermatozoa per dose), rediluted after 12h of storage at 5°C for standard doses of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine; Fractioned collection; Cooling; Transport. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000200327 |
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| Nascimento,A.L.T.O.; Verjovski-Almeida,S.; Van Sluys,M.A.; Monteiro-Vitorello,C.B.; Camargo,L.E.A.; Digiampietri,L.A.; Harstkeerl,R.A.; Ho,P.L.; Marques,M.V.; Oliveira,M.C.; Setubal,J.C.; Haake,D.A.; Martins,E.A.L.. |
| We report novel features of the genome sequence of Leptospira interrogans serovar Copenhageni, a highly invasive spirochete. Leptospira species colonize a significant proportion of rodent populations worldwide and produce life-threatening infections in mammals. Genomic sequence analysis reveals the presence of a competent transport system with 13 families of genes encoding for major transporters including a three-member component efflux system compatible with the long-term survival of this organism. The leptospiral genome contains a broad array of genes encoding regulatory system, signal transduction and methyl-accepting chemotaxis proteins, reflecting the organism's ability to respond to diverse environmental stimuli. The identification of a complete set... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leptospira interrogans; Outer membrane proteins; Lipopolysaccharides; Transport; Regulatory systems. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000400003 |
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| Ducic,Tanja; Polle,Andrea. |
| Heavy metals like Mn and Cu, though essential for normal plant growth and development, can be toxic when present in excess in the environment. For normal plant growth maintenance of metal homeostasis is important. Excess uptake of redox active elements causes oxidative destruction. Thus, uptake, transport and distribution within the plant must be strongly controlled. Regulation includes precisely targeted transport from the macro-level of the tissue to the micro-level of the cell and organelles. Membrane transport systems play very important roles in metal trafficking. This review provides a broad overview of the long distance and cellular transport as well as detoxification and homeostasis mechanisms of Mn and Cu, which are essential micronutrients but... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Copper; Heavy metals; Manganese; Phytoremediation; Transport. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000100009 |
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| Abreu,Janessa Sampaio de; Sanabria-Ochoa,Ana Isabel; Gonçalves,Flávio Daolio; Urbinati,Elisabeth Criscuolo. |
| Optimum loading density for the transport of matrinxã juveniles was investigated in a closed system with plastic bags. Transport was conducted for 4 h with fish (23.5± 0.4g and 11.6 (0.08cm) starved for 24h at loading densities of 83g L-1 (D1), 125g L-1 (D2), 168g L-1 (D3) and 206g L-1 (D4). Fish were sampled before transport (BT), after transport (AT) and 24h AT. The water quality was monitored before capturing fish in depuration tanks, after transport in plastic bags and in recovery tanks. Water oxygen decreased to values below 4mg L-1 in D2, D3 and D4, temperature was around 32°C, pH 6.5-6.78, total ammonia 1.09-1.7mg L-1, un-ionized ammonia 3.58-9.33x10³mg L-1 and alkalinity 134-165mg CaCO3 L-1. Blood cortisol and glucose concentrations increased in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stress; Fish density; Transport; Water quality; Brycon amazonicus. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000500034 |
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| Daniel,Ana Paula; Ferreira,Lauren Fresinghelli; Klein,Bruna; Ruviaro,Amanda Roggia; Quatrin,Andréia; Parodi,Thaylise Vey; Zeppenfeld,Carla Cristina; Heinzmann,Berta Maria; Baldisserotto,Bernardo; Emanuelli,Tatiana. |
| ABSTRACT: This research aimed to evaluate whether the essential oil of Aloysia triphylla (EOAT) used in vivo as a sedative in the water for transporting fish could increase the oxidative stability of silver catfish (Rhamdia quelen) fillets during frozen storage. The chemical composition of EOAT and of fillets from fish exposed to EOAT (0, 30 or 40µL L-1) were assessed. The pH and lipid oxidation parameters (conjugated dienes, CD; thiobarbituric acid-reactive-substances, TBARS) were evaluated in the fillets throughout the storage period (-18±2oC/17 months). The main compounds found in EOAT were α- and β-citral. Treatment with EOAT did not modify the proximate composition of the fillets, but 40µL L-1 EOAT reduced pH levels when compared to the control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lipid oxidation; Transport; Fish; TBARS; Natural anesthetic. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300560 |
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| Martínez-Quintana,José Alfredo; Yepiz-Plascencia,Gloria. |
| Glucose and related hexoses are very important metabolic substrates. Their most important function is to provide quick fuel for most organisms in all three kingdoms because they are the first substrate for energy production in the form of ATP through glycolysis and the subsequent metabolic pathways. In this paper we review the current information about how glucose and related hexoses are transported across biological membranes to carry out their function either as a metabolic molecule or as energy store in marine invertebrate organisms. In these animals, there are two sugar transport systems that are mediated by the sodium/solute symporter family proteins (SGLT) and the major facilitative super-family proteins (GLUT). The most studied sugar transporters in... |
| Tipo: Journal article |
Palavras-chave: Facilitative; GLUT; SGLT; Sodium-dependent; Transport. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000500016 |
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| Faria,Danilo A. F. de; Frazão,Márcia L. da S.; Vieira,José G. V.; Silva,João E. A. R. da; Lemos,Paula H.. |
| ABSTRACT This article explores decision analysis regarding Drop and Hook (D&H) transportation operations at sugarcane mills. By means of a case study, a combination of a discrete event simulation model and multi-attribute utility theory was used to evaluate different configurations for sugarcane delivery systems using internal, external, or no D&H systems. A D&H strategy maximises truck utilisation, as semi-trailers can be handled independently of the traction unit of the trucks, which makes the transport system more agile. For internal D&H systems the semi-trailer detaching/attaching point is located inside the mill site while for external D&H systems it is located outside, before the trucks’ weighbridge. Each configuration requires... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drop and hook; Multicriteria analysis; Simulation model; Sugarcane; Transport. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000200248 |
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| Registros recuperados: 65 | |
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