|
|
|
| Registros recuperados: 83 | |
|
|
| Esparza Díaz, Gabriela. |
| Se estudiaron los procesos de extracción de compuestos de la semilla de nim y su efecto en Aphis gossypii Glover, se exploró la viabilidad del uso comercial de azadiractina y su producción en México. En la primera parte se evaluaron los procesos de extracción de azadiractina de la semilla por extrusión y Soxhlet, con los solventes metanol, hexano, agua y d-limoneno. La concentración de 2478 mg kg-1 de azadiractina A (AZA) producida al usar metanol por extrusión, fue significativamente mayor que el resto de los solventes. Este extracto de la semilla (azadirex) también contuvo salanina, azadiractina B, y nimbina; la concentración de salanina fue de 3866 mg kg-1 y superó significativamente a las otras sustancias. Los métodos de extracción (acuosa, Soxhlet con... |
|
Palavras-chave: Azadirachta indica A. Juss.; Viabilidad; Salanina; Nimbina; Viability; Salannin; Nimbin; Doctorado; Agroecosistemas Tropicales. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/213 |
| |
|
|
| Alemán Morales, Mireya. |
| La producción de “setas” (Pleurotus ostreatus), es una alternativa para producir y diversificar los alimentos que requiere la población en México. En el país es escasa la información acerca de la rentabilidad de éste cultivo. Por ello, el objetivo de este trabajo fue estimar una función de producción que muestre matemáticamente la relación funcional entre los insumos productivos utilizados y la producción “setas”. La variable dependiente la constituyó la producción de “setas” producidas y la variable independiente fueron las bolsas en producción. Los resultados económicos mostraron que la etapa de producción II, la que es económicamente relevante, se inicia en el punto donde se encuentran en el área de producción 2449 bolsas y termina donde el producto... |
| Tipo: Tesis |
Palavras-chave: Función de producción; Pleurotus ostreatus; Optimización; Rentabilidad; “setas”; Production function; Pleurotus ostreatus; Optimisation; Viability; “mushrooms”. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1417 |
| |
|
|
| Vázquez Hurtado, Nora Berenice. |
| Los procesos sustentables son adoptados con mayor frecuencia por comunidades rurales de México. La conveniencia de conservar y aprovechar de una forma sostenible los recursos naturales, especialmente las bromelias (con potencial ornamental), pueden generar opciones y beneficios para las familias. Como una opción para evitar el saqueo, así como contribuir al manejo y protección, de las bromelias .En esta investigación se plantearon los siguientes objetivo:1) se evaluó el porcentaje de germinación y viabilidad en las semillas de Tillandsia macdougallii y Tillandsia violacea, 2) se probó el efecto de los tratamientos pregerminativos, AG₃ y NKO₃ en la germinación y desarrollo de plántulas, 3) se estudiaron los efectos de diferentes sustratos para el... |
|
Palavras-chave: Germinación; Viabilidad; Sustratos; Micropropagación; Sobrevivencia; Germination; Viability; Substrates; Micropropagation; Survival; Botánica; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2298 |
| |
|
|
| Esparza Díaz, Gabriela. |
| Se estudiaron los procesos de extracción de compuestos de la semilla de nim y su efecto en Aphis gossypii Glover, se exploró la viabilidad del uso comercial de azadiractina y su producción en México. En la primera parte se evaluaron los procesos de extracción de azadiractina de la semilla por extrusión y Soxhlet, con los solventes metanol, hexano, agua y d-limoneno. La concentración de 2478 mg kg-1 de azadiractina A (AZA) producida al usar metanol por extrusión, fue significativamente mayor que el resto de los solventes. Este extracto de la semilla (azadirex) también contuvo salanina, azadiractina B, y nimbina; la concentración de salanina fue de 3866 mg kg-1 y superó significativamente a las otras sustancias. Los métodos de extracción (acuosa, Soxhlet con... |
|
Palavras-chave: Azadirachta indica A. Juss.; Viabilidad; Salanina; Nimbina; Viability; Salannin; Nimbin; Doctorado; Agroecosistemas Tropicales. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/213 |
| |
|
|
| Daneshi,Mohammad; Ehsani,Mohammad Reza; Razavi,Seyed Hadi; Labbafi,Mohsen. |
| Background: There is a genuine interest in the development of probiotic milk and juice based beverages because they are a good-vehicle to deliver probiotic microorganisms to consumers. For this purpose, the viability and metabolism of four probiotic strains (Lactobacillus acidophilus LA5, Bifidobacterium lactis BB12, L. rhamnosus and L. plantarum) were studied in non-fermented milk and carrot juice mix drink. The drinks were evaluated in 5 days interval for viable cell count, pH, acidity, sedimentation and sensory quality during refrigerated storage at 4 ± 2ºC for up to 20 days. Results: The results showed that all strains had good viability in milk/carrot juice drink (88-98%), but L. acidophilus LA5 seemed more stable than three other strains. The levels... |
| Tipo: Journal article |
Palavras-chave: Carrot juice; Functional beverage; Non-fermented; Probiotic; Viability. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000500005 |
| |
|
|
| Nematollahia,Amene; Sohrabvandi,Sara; Mortazavian,Amir Mohammad; Jazaeri,Sahar. |
| Background: Increased popularity of vegetarianism, lactose intolerance, and the high cholesterol content in dairy products, are all factors that have recently increased the demand for nondairy probiotic products. The objective of this study is to evaluate the effect of refrigeration on the viability of probiotics and asses some of the chemical and sensory characteristics in cornelian cherry juice. Results: The Iranian native probiotic strain (L. casei T4) showed greater viability compared to industrial types (viable count of 8.67 log cfu/mL versus <6.0 log cfu/mL at d 28). However, this most tolerant Iranian strain, could not withstand the conditions of 'Natural juice' at pH 2.6 for more than 7 d. Following a pH adjusted treatment (to pH ~3.5), the... |
| Tipo: Journal article |
Palavras-chave: Antioxidant activity; Anthocyanin; Cornelian cherry; Phenolic compounds; Probiotic; Viability. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000300005 |
| |
|
|
| Pratissoli,Dirceu; Polanczyk,Ricardo A; Holtz,Anderson M; Dalvi,Leandro P; Silva,Alexandre F; Silva,Luciano N. |
| Biological characteristics of the egg parasitoids Trichogramma acacioi, T. atopovirilia, and T. bennetti were studied to select the one with better performance on the control of the Diamondback moth, Plutella xylostella. Parasitism rate, viability, and sex ratio were studied. Parasitism rate ranged from 1.67 to 41.33%. T. atopovirilia and T. acacioi were respectively the most and less aggressive species. The viability ranged from 6.20% for T. acacioi to 53.34% for T. atopovirilia. There were no differences on sex ratio (p<0.05) that remained above 0,88. T. atopovirilia was the species with best performance in the laboratory when rearing on the Diamondback moth eggs. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plutella xylostella; Biological control; Egg parasitoids; Parasitism; Sex ratio; Viability. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000200026 |
| |
|
|
| Pratissoli,Dirceu; Polanczyk,Ricardo A; Holtz,Anderson M; Dalvi,Leandro P; Silva,Alexandre F; Silva,Luciano N. |
| Biological characteristics of the egg parasitoids Trichogramma acacioi, T. atopovirilia, and T. bennetti were studied to select the one with better performance on the control of the Diamondback moth, Plutella xylostella. Parasitism rate, viability, and sex ratio were studied. Parasitism rate ranged from 1.67 to 41.33%. T. atopovirilia and T. acacioi were respectively the most and less aggressive species. The viability ranged from 6.20% for T. acacioi to 53.34% for T. atopovirilia. There were no differences on sex ratio (P < 0.05) that remained above 0,88. T. atopovirilia was the species with best performance in the laboratory when rearing on the Diamondback moth eggs. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plutella xylostella; Biological control; Egg parasitoids; Parasitism; Sex ratio; Viability. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000200013 |
| |
|
| |
|
|
| Setta,Nathalia de; Carareto,Cláudia M. A.. |
| This study aimed to evaluate fitness components of Zaprionus indianus Gupta, 1970, a species recently introduced in Brazil and currently in process of colonization. Longevity, productivity, developmental speed and viability of flies sampled from a population from Mirassol (state of São Paulo, Brazil) were evaluated. Longevity was higher than that of some Indian populations and productivity was similar or higher than in other Drosophilidae. Time of development, one of the main fitness components for competition, was very similar to the values scored in Drosophila sturtevanti Duda, 1927, a species that occurs in high frequencies in the same area as Z. indianus. These data might contribute further for understanding the colonization success of this newcomer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitness components; Productivity; Viability; Time of development; Zaprionus. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000100007 |
| |
|
|
| AGUIAR, J. L. P. de; ALMEIDA, S. P. de. |
| A gueroba, guariroba ou gariroba e uma palmeira importante para a populacao do Cerrado, sendo extraido dela um palmito de sabor amargo muito apreciado na culinaria regional. Esse produto e comercializado, geralmente, in natura e sua industrializacao ainda e artesanal. Seu principal mercado localiza-se nos Estados de Goias, Tocantins, Mato Grosso, Mato Grosso do Sul, algumas regoes da Bahia e de Minas Gerais e no Distrito Federal. Com a exploracao predatoria e a acelerada destruicao da vegetacao nativa por meio da expansao da fronteira agricola, a oferta do produto, oriunda do extrativismo, vem sendo reduzida substancialmente. No entanto, tem-se observado o cultivo dessa palmeira em alguns Estados, principalmente em Goias que, em 1999, cultivava 4.499... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Gueroba; Syagrus oleracea; Production system; Viabilidade; Cerrado; Guariroba; Palmae; Palmeira Oleaginosa; Sistema de Produção; Viability. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/564012 |
| |
|
| |
|
|
| Loka Bharathi, Pa; Nair, S; Bd De Souza, Mj; Chandramohan, D. |
| During the austral summer, we examined the bacterial population along the cruise track extending from 70degrees S and 18degrees E to 30degrees S and 35degrees E. During the cruise, three distinct fractions of the bacterioplankton viz. total count, total direct viable and retrievable counts were simultaneously enumerated in these waters. In the stations south of the convergent region designated as section I the population ranged within 10(8-9) L-1 whereas in the north of the region designated as section 11 they were one order higher and ranged from 10(9-10) L-1. The percentage of viability in the region was high corresponding to the generally high chlorophyll and primary productivity encountered in the eastern Aghulas bank. The study substantiates the... |
| Tipo: Text |
Palavras-chave: Bactérie; Viabilité; Océan Antarctique; Secteur indien; Bacteria; Viability; Antarctic ocean; Indian side. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00322/43334/42893.pdf |
| |
|
|
| Doyen, Luc; Cisse, Abdoul; Gourguet, Sophie; Mouysset, L.; Hardy, Pierre-yves; Bene, Christophe; Blanchard, Fabian; Jiguet, Frederic; Pereau, J.-c.; Thebaud, Olivier. |
| Terrestrial and marine biodiversity provides the basis for both ecosystems functioning and numerous commodities or services that underpin human well-being. From several decades, alarming trends have been reported worldwide for both biodiversity and ecosystem services. Therefore the sustainable management of biodiversity requires a double viewpoint balancing ecological conservation with the welfare of human societies. Understanding the underlying trade-offs, synergies and interactions imposes the development of interdisciplinary researches and methods. In that respect, bio-economic or ecological economic modeling is likely to play a major role. The present paper intends to elicit the key features, strengths and challenges of bio-economic approaches... |
| Tipo: Text |
Palavras-chave: Ecological economics; Modeling; Sustainability; Biodiversity; Public policy; Criterion; Equilibrium; Optimality; Viability. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00171/28208/26510.pdf |
| |
|
|
| Doyen, Luc; Bene, Christophe; Bertignac, Michel; Blanchard, Fabian; Cisse, Abdoul; Dichmont, Catherine; Gourguet, Sophie; Guyader, Olivier; Hardy, Pierre-yves; Jennings, Sarah; Little, Lorne Richard; Macher, Claire; Mills, David Jonathan; Noussair, Ahmed; Pascoe, Sean; Pereau, Jean-christophe; Sanz, Nicolas; Schwarz, Anne-maree; Smith, Tony; Thebaud, Olivier. |
| Reconciling food security, economic development and biodiversity conservation is a key challenge, especially in the face of the demographic transition characterizing many countries in the world. Fisheries and marine ecosystems constitute a difficult application of this bio-economic challenge. Many experts and scientists advocate an ecosystem approach to manage marine socio-ecosystems for their sustainability and resilience. However, the ways by which to operationalize ecosystem-based fisheries management (EBFM) remain poorly specified. We propose a specific methodological framework-viability modelling-to do so. We show how viability modelling can be applied using four contrasted case-studies: two small-scale fisheries in South America and Pacific and two... |
| Tipo: Text |
Palavras-chave: Biodiversity; Ecological economics; Ecosystem approach; Fisheries; Scenario; Viability. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00409/52009/52724.pdf |
| |
|
|
| Doyen, Luc; Thebaud, Olivier; Bene, Christopher; Martinet, V.; Gourguet, S.; Bertignac, Michel; Fifas, Spyros; Blanchard, Fabian. |
| Academia and management agencies show a growing interest for ecosystem-based fishery management (EBFM). However, the way to operationalize this approach remains challenging. The present paper illustrates how the concepts of stochastic co-viability, which accounts for dynamic complexities, uncertainties, risk and sustainability constraints, can be useful for the implementation of EBFM. In the present case, this concept is used to identify fishing strategies that satisfy both ecological conservation and economic sustainability in a multi-species, multi-fleet context. Economic Viability Analysis (EVA) and the broader Co-Viability Analysis (CVA), are proposed to expand the usual Population Viability Analysis (PVA) and precautionary approach. An illustration is... |
| Tipo: Text |
Palavras-chave: Ecosystem based fisheries management; Viability; Stochastic; Nephrops; Hake. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00074/18571/16153.pdf |
| |
|
|
| Martinet, Vincent; Blanchard, Fabian. |
| Sustainable management of natural resources, and in particular fisheries, must take into account several conflicting objectives. This is the case in the French Guiana shrimp fishery for which profitability objectives imply a reduction in the fishing activity. On the one hand, this fishery has negative externalities on marine biodiversity due to discards. On the other hand, this fishery has positive externalities on the economy of the local community and interestingly enough on a protected seabird species in the area (the Frigatebird that feeds on discards). In this paper, we examine the viability of that system considering two sustainability objectives: an economic objective in terms of the profitability of the fishing activity, and a conservation... |
| Tipo: Text |
Palavras-chave: Bio-economic modeling; Viability; Sustainability; Fishery externalities; Species conservation. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00020/13135/10195.pdf |
| |
|
|
| Cisse, Abdoul; Doyen, L.; Blanchard, Fabian; Bene, Christophe; Pereau, J. -c.. |
| This paper applies a stochastic viability approach to a tropical small-scale fishery, offering a theoretical and empirical example of ecosystem-based fishery management approach that accounts for food security. The model integrates multi-species, multi-fleet and uncertainty as well as profitability, food production, and demographic growth. It is calibrated over the period 2006–2010 using monthly catch and effort data from the French Guiana's coastal fishery, involving thirteen species and four fleets. Using projections at the horizon 2040, different management strategies and scenarios are compared from a viability viewpoint, thus accounting for biodiversity preservation, fleet profitability and food security. The analysis shows that under certain... |
| Tipo: Text |
Palavras-chave: Small-scale fishery; Biodiversity; Sustainability; Profitability; Food security; Multi-species; Multi-fleet; Stochasticity; Viability; Scenario. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00276/38732/37310.pdf |
| |
|
|
| De Lara, Michel; Doyen, Luc; Guilbaud, Therese; Rochet, Marie-joelle. |
| Fisheries management agencies have to drive resources on sustainable paths, i.e. within defined boundaries for an indefinite time. The viable-control approach is proposed as a relevant method to deal with sustainability. We analyse the ICES precautionary approach (PA) by means of the notion of viability domain, and provide a mathematical test for sustainability. It is found that the PA based on spawning-stock biomass (SSB) and fishing mortality (F) indicators is sustainable only when recruits make a significant contribution to SSB. In this case, advice based upon SSB, with an appropriate reference point, is sufficient to ensure sustainability. In all other cases, SSB is not a sufficient metric of stock productivity and must be complemented with other... |
| Tipo: Text |
Palavras-chave: Viability; Sustainable management; Indicators; ICES precautionary approach. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2821.pdf |
| |
|
|
| Boulais, Myrina; Soudant, Philippe; Le Goic, Nelly; Quere, Claudie; Boudry, Pierre; Suquet, Marc. |
| Fertilization of the oocyte is a critical process of sexual reproduction depending among other factors on spermatozoa functionality. Mitochondria participate in many crucial processes for spermatozoa motility and fertilizing ability. The Pacific oyster, Crassostrea gigas, is characterized by a high inter-individual variability of its reproductive success which has been shown to be partially due to the variability of gamete quality. The present study explored spermatozoa characteristics such as: i) relationships among mitochondrial functionality (ATP content, mitochondrial membrane potential (MMP), reactive oxygen species production); sperm viability (percentages of live, dying, and dead); and motility; and ii) their involvement in inter-oyster variability... |
| Tipo: Text |
Palavras-chave: Spermatozoa; Quality; Motility; Viability; ATP content; ROS production. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00386/49769/50309.pdf |
| |
| Registros recuperados: 83 | |
|
|
|
