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| Registros recuperados: 88 | |
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| Sousa,Diego Guimarães de; Cunha,Hélida Ferreira da. |
| ABSTRACT Understanding how fire affects the plant biota of the Cerrado is essential for formulating conservational strategies. We evaluated the effects of fires during different periods of the year on the populational structure of Anacardium humile. The research was carried out in areas of typical cerrado stricto sensu in the territory of the Kalunga, state of Goiás, Brazil. These areas, which comprise the same population, were submitted to the following treatments: unburned (control), burned in May 2016 (early fire - EF), and burned in September 2016 (late fire - LF). In July 2018, we delimited two contiguous transects of 100 x 20 m, subdivided into 10 plots of 20 x 20 m, in each area. Fire stimulated the development of branches from basal regrowth in EF... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardiaceae; Burning; Cerrado; Fire; Impact; Regimes. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200401 |
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| BELLO, SEGUN RAPHAEL. |
| Performance evaluations of three coconut cracking devices was carried out and its results compared with the conventional (hand cracking technique) of hitting on hard surface. The three devices include a punch-split device, an impact-split device and hydraulic press split device which were developed at the Department of Agricultural & Bioenvironmental Engineering Technology, Federal College of Agriculture, Ishiagu. Each technique was evaluated for output capacity, cracking efficiency, ergonomics, and time required to crack a unit of different grades of coconut. The average cracking efficiency for punch split was 87.09 per cent with a range of 86.76 to 95.00 per cent, impact split efficiency varied from 83.33 to 95.00 per cent with the average of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coconut; Cracking; Impact; Hydraulic; Sphericity; Efficiency; Capacity; Roundness. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5673 |
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| minteh, mustapha. |
| Abstract: Maintenance cost of agricultural machines accounts for about 10 to 15% of total production cost and this tends to increase as the machine gets older. To stabilized this already high cost, agricultural machinery maintenance engineers chose Preventive Maintenance (PM) strategy. However, the latter may not produce the desired results especially when machines are used under different operating context. In this paper, an assessment of the effects of PM strategy on reliability indicators (failure rate, mean time between failures (MTBF), mean time to repair (MTTR) and mechanical availability) of a rice combine harvester Mitsubishi TVR96 working under the operating context of Pacharr rice fields in The Gambia, is discussed. These reliability indicators... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Assessment; Impact; Preventive maintenance; Reliability indicators; Failure; Rice combine harvester.. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4855 |
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| Pereyra,Patricio J.; Rossini,Gustavo B.; Darrigran,Gustavo. |
| The golden mussel Limnoperna fortunei (Dunker 1857) is one of the most distributed Nuisance Invasive Species (NIS) in South America, and a threat of great concern for the industry of the area. In this study, we carried out toxicity tests made with a Neem's oil solution with L. fortunei larvae and benthonic adults (7, 13 and 19 ± 1 mm). Tests with non-target species (Daphnia magna, Lactuca sativa and Cnesterodon decemmculatus) were also made with the aim to evaluate the potential toxicity of the Neem's solution in the environment. The LC100 of Neem's solution obtained for larvae was 500 µl/L, a value much higher than the one obtained for D. magna and C. decemmaculatus. Thus, we recommend that it should not be used in open waters. However, since the adults... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biocide; Impact; Limnoperna fortune; I Neem's oil. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400020 |
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| Oliveira,Hernani F. M. de; Aguiar,Ludmilla M.S.. |
| Fire is a common and natural event in Cerrado that can influence the composition of trees and mammals and change the entire conditions of the environment. This study was developed in a gallery forest of Distrito Federal - Brazil. Bat samplings were conducted for a total of six nights after a fire that happened on the gallery forest. Three samplings were conducted: one day, three months and seven months after fire. A total of nine mist nets (12 m x 3 m) were opened from 7pm to 1am. Captured bats were measured and identified to species. Shannon index measured the species diversity of bats in the gallery forest over time. A rarefaction curve was made to assess the estimated bat richness in each of the samplings and a chi-square test was used to check whether... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Chiroptera; Cerrado; Fire; Impact; Recovery. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000400402 |
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| Kritski,Afrânio; Fujiwara,Paula I.; Vieira,Maria Armanda; Netto,Antonio Ruffino; Oliveira,Martha Maria; Huf,Gisele; Squire,S. Bertel. |
| In this manuscript, we report the current situation of tuberculosis globally and in Brazil, the need for new strategies toward tuberculosis control, focusing on new diagnostic technologies. Critical comments are given on the state of the art regarding the evaluation of new health technologies, degree of scientific evidence needed, evaluation of clinical impact, cost-effectiveness of incorporation into the health system and the social impact. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tuberculosis; Diagnostics; Impact; Evidence; Policy; Innovation; Regulatory agency. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200015 |
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| Sampayo Paredes, Humberto. |
| En México, como en prácticamente todo el mundo, se experimenta un acelerado crecimiento del sector de las microfinanzas de corte comercial, aun cuando se trata de un sector relativamente nuevo; desde principios de la década los 90´s, para el caso específico de México. Ello se debe a cuatro factores básicos: a) La enorme demanda de servicios financieros por parte de millones de personas de bajos ingresos; b) El diseño de una tecnología apropiada para acercar estos servicios a esa población; c) La presencia de inversionistas dispuestos a invertir en esta industria y; d) La difusión mundial que se le ha dado como instrumento de combate a la pobreza (objetivos del milenio). Lo anterior ha dado origen a múltiples estudios enfocados a evaluar los... |
| Tipo: Tesis |
Palavras-chave: Microfinanzas; Crecimiento; Impactos; Pobreza; Bienestar; Maestría; Desarrollo Rural; Microfinance; Growth; Impact; Poverty; Welfare. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1532 |
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| Lallement,Mailén Elizabeth; Juárez,Santiago Martín; Macchi,Patricio Jorge; Vigliano,Pablo Horacio. |
| Volcanic eruptions are natural phenomena with the most diverse and varied consequences, and have important effects on both terrestrial and aquatic environments. On June 4th, 2011 the volcanic Puyehue Cordón-Caulle complex (2.236 masl, 40º 32´ S-72º 2´ W, Chile) erupted explosively ejecting on the first day, 950 million metric tons of ashes into the atmosphere. Due to predominant westerly winds, 24 million hectares of Argentinian Patagonia were covered by the ashfall. We studied three streams in northwestern Patagonia in order to explore the ash fall impact and possible recovery processes in water quality and macroinvertebrate communities. We selected three streams representing maximum, intermediate and minimum ash deposition levels. For each stream, we... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Volcanic ash; Impact; Arthropods; Functional feeding groups; Water quality. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2014000100008 |
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| Margoluis, Richard; Foundations of Success;; Stem, Caroline; Foundations of Success;; Swaminathan, Vinaya; Foundations of Success; vinaya@fosonline.org; Brown, Marcia; Foundations of Success;; Johnson, Arlyne; Foundations of Success;; Placci, Guillermo; Foundations of Success;; Salafsky, Nick; Foundations of Success; Nick@FOSonline.org; Tilders, Ilke; Foundations of Success;. |
| Every day, the challenges to achieving conservation grow. Threats to species, habitats, and ecosystems multiply and intensify. The conservation community has invested decades of resources and hard work to reduce or eliminate these threats. However, it struggles to demonstrate that its efforts are having an impact. In recent years, conservation project managers, teams, and organizations have found themselves under increasing pressure to demonstrate measurable impacts that can be attributed to their actions. To do so, they need to answer three important questions: (1) Are we achieving our desired impact?; (2) Have we selected the best interventions to achieve our desired impact?; and (3) Are we executing our interventions in the best possible manner? We... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Adaptive management; Assumption; Effectiveness; Evaluation; Impact; Measure; Monitoring; Outcome; Planning; Results chains; Theory of change. |
| Ano: 2013 |
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| OLIVEIRA, M. D. de; CALHEIROS, D. F.. |
| Considerando os usos gerais dos principais sistemas aquáticos no Brasil, os impactos causados por processos de erosão/assoreamento são pontos importantes a serem considerados em programas de pesquisa, básica e aplicada, na área de Limnologia, devido a sua importância na alteração da qualidade da água.O aumento do aporte de material em suspensão, além de causar assoreamento dos rios, altera as características físicas e químicas da água, modificando a qualidade óptica da água e a temperatura (Alabaster & Lloyd, 1982). O sedimento em suspensão pode aderir à superfície dos ovos de peixes, impedindo as trocas de oxigênio e dióxido de carbono, aderir às brânquias e prejudicar as funções de respiração e excreção, e depositar-se cobrindo plantas e locais de... |
| Tipo: Folhetos |
Palavras-chave: Alteração; Característica; Assoreamento; Impacto; Rio Taquari; Characteristic; Sedimentation; Impact; Taquari river; Água; Limnologia; Pantanal; Limnology; Water. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/810731 |
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| Bouilly, Karine; Leitao, Alexandra; Mccombie, Helen; Chaves, R.; Guedes Pinto, H; Boudry, Pierre; Lapegue, Sylvie. |
| In the Pacific oyster, Crassostrea gigas hypodiploid aneuploid cells with 2n=19, 18 or 17 chromosomes have regularly been reported. There is a negative correlation between somatic aneuploidy and growth rate in oysters (Leitão et al., 2001a) as well as evidence for a genetic basis (Leitão et al., 2001b). Furthermore, non-random chromosome loss has been demonstrated in aneuploid karyotypes of C. gigas using the G-banding technique (Leitão et al., 2001c). This poster summarises different studies used to investigate the effects of the herbicide atrazine on the level of aneuploidy in this species |
| Tipo: Text |
Palavras-chave: Genetic; Aneuploidy; Toxicology; Impact; Atrazine; Crassostrea gigas; Pacific oysters. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/acte-3489.pdf |
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| Buchet, Rémi. |
| Within the European water framework directive (WFD), the status assessment of littoral waters is based both on the chemical quality and on the ecological quality of each water body. Quality elements enabling to assess the ecological status of a water body are, among other things, biological quality elements (phytoplankton, macroalgae, angiosperms, benthic invertebrates, fish), for each of which the member states have developed quantitative indicators. This document is one of the deliverables of a multi-annual study intended to characterize the sensitivity of these biological indicators towards the various anthropogenic pressures exerted on the French Atlantic and Channel coast: ultimately, the goal is to establish a quantitative and predictive... |
| Tipo: Text |
Palavras-chave: DCE; Manche-Atlantique; Élément de qualité biologique; Indicateur; Métrique; DPSIR; Pressions anthropiques; Forçages naturels; Impact; WFD; Atlantic and Channel coastline; Biological quality element; Indicator; Metric; DPSIR; Anthropogenic pressures; Natural constraints; Impact. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00346/45721/45350.pdf |
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| Bondad-reantaso, Melba; Berthe, Franck. |
| Pacific oysters were introduced into west coast of the USA from Matsushima Bay in Japan, infected with low levels of Haplosporidiumsp. identical to H.nelsoni(MSX) which causes high mortalities of Eastern oyster (C. virginica). A highly specific and sensitive DNA probe for H. nelsonican also detect Haplosporidium sp. in C.gigas of western US and Japan (Burreson and Stokes 2000).In 2002, H. nelsoni was detected in Japan using the same probe (Kamaishi and Yoshinaga 2002).Lesson: it appears that H. nelsoni does not cause serious disease in Pacific oysters; H. nelsoniis now speculated to have been introduced into the Pacific US by apparently healthy but infected C. gigas. Infected C. gigaswere introduced onto the east coast of the US where the parasite shifted... |
| Tipo: Text |
Palavras-chave: Pathogens; Diseases; Impact; Introductions; Transfers; Molluscan Pathogens. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/acte-3294.pdf |
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| Registros recuperados: 88 | |
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