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| Registros recuperados: 161 | |
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| Linares Bravo, Bárbara Carolina. |
| Este trabajo describe, desde una perspectiva territorial y de género, el proceso de reconversión productiva a palma de aceite y sus repercusiones en tres localidades indígenas del Valle del Tulijá, Chiapas, México. La información aquí presentada, se recolectó y analizó a través de un enfoque mixto de investigación, utilizando la encuesta y la entrevista semiestructurada como herramientas principales. Se encuentra que la reconversión productiva a palma de aceite, cuyo destino comercial es la industria alimenticia y de biocombustibles, ha sido promovida desde agentes locales, nacionales e internacionales, impactando diferencialmente en el ámbito local, con base en las desiguales relaciones de poder encontradas al interior del territorio. Al sustituir una... |
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Palavras-chave: Biocombustibles; Globalización neoliberal; Políticas públicas; Relaciones de género; Biofuels; Food crisis; Neoliberal globalization; Public policies; Gender relationships; Desarrollo rural; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2370 |
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| Romero Padilla, Arely. |
| En los últimos años, México ha venido importado grandes cantidades del maíz que consume su población. Ante esta dependencia alimentaria, nuestro país es vulnerable a los cambios en la producción internacional de este cereal y altamente susceptible a las decisiones y políticas que se establecen en Estados Unidos por ser éste el principal proveedor de maíz a México y el principal productor y exportador a nivel mundial. Aunado a ello, ante la crisis energética mundial se ha dado un crecimiento en la producción de biocombustibles, en donde Estados Unidos ha destinado gran parte su producción de maíz a la generación de etanol, lo que impacta directamente la disposición de este cereal para exportarse a los países deficitarios como México. El objetivo de este... |
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Palavras-chave: Importaciones; Biocombustibles; Maíz; Políticas Agrícolas; Precios Agrícolas; Imports; Biofuels; Corn; Agricultural Policy; Agricultural Prices; Economía; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/1872 |
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| Solís Guzmán, Blanca Flor. |
| Jatropha curcas L. es una opción de importancia en Chiapas como materia prima para biodiesel y se han establecido alrededor de 10 mil hectáreas, aún con escasa información como cultivo. El objetivo de este trabajo fue determinar el potencial de integración de J. curcas en agroecosistemas de la Región Centro de Chiapas, México. Esta investigación se realizó en tres etapas de 2008 a 2011. Primero se determinaron áreas potenciales con el programa ArcView GIS Ver. 3.2®, en dos escenarios: 1) pendiente ≥5 ≤15 % y 2) pendiente ≥0 ≤15 %; el segundo analizó la actitud y aptitud de productores hacia J. curcas como cultivo, usando el índice de Likert y análisis estadísticos univariados y bivariados; el tercero determinó la factibilidad financiera para cultivar J.... |
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Palavras-chave: Jatropha curcas; Cultivos asociados; Biocombustibles; Chiapas; Intercropping; Biofuels; Doctorado; Agroecosistemas tropicales. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/698 |
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| von Maltitz, Graham P.; CSIR, South Africa; Nelson Mandela Metropolitan University, South Africa; gvmalt@csir.co.za; Gasparatos, Alexandros; Integrated Research System for Sustainability Science (IR3S), University of Tokyo, Tokyo, Japan; gasparatos@ir3s.u-tokyo.ac.jp; Fabricius, Christo; Sustainability Research Unit, Nelson Mandela Metropolitan University, South Africa; christo.fabricius@nmmu.ac.za; Morris, Abbie; Independent development practitioner, Malawi; Chittock.abbie@gmail.com; Willis, Kathy J.; Department of Zoology, University of Oxford, UK; Royal Botanical Gardens Kew, UK; kathy.willis@zoo.ox.ac.uk. |
| Jatropha-based biofuels have undergone a rapid boom-and-bust cycle in southern Africa. Despite strong initial support by governments, donors, and the private sector, there is a lack of empirical studies that compare the environmental and socioeconomic impacts of Jatropha’s two dominant modes of production: large plantations and smallholder-based projects. We apply a rapid ecosystem services assessment approach to understand the impact of two Jatropha projects that are still operational despite widespread project collapse across southern Africa: a smallholder-based project (BERL, Malawi) and a large plantation (Niqel, Mozambique). Our study focuses on changes in provisioning ecosystem services such as biofuel feedstock, food, and woodland products... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Biofuels; Ecosystem services; Jatropha; Malawi; Mozambique; Smallholders. |
| Ano: 2016 |
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| Schut, Marc; Knowledge, Technology and Innovation Group, Wageningen University and Research Centre; marc.schut@wur.nl; Leeuwis, Cees; Knowledge, Technology and Innovation Group, Wageningen University and Research Centre; cees.leeuwis@wur.nl; Paassen, Annemarie van; Knowledge, Technology and Innovation Group, Wageningen University and Research Centre; annemarie.vanpaassen@wur.nl. |
| In this paper, we explore how ex ante scale dynamics analysis can contribute to better understanding of interactions between scales and levels, and how these interactions influence solution space in policy processes. In so doing, we address opportunities and challenges of conducting ex ante scale dynamics analysis as part of an action-oriented social science research approach that seeks to enhance its contribution to more scale-sensitive policy development. The policy debate on sustainable biofuels in Mozambique provides the empirical context in which we analyze interactions across administrative, institutional, and economic scales and levels, and how these interactions influence the space in which policy solutions can be explored and designed. On the... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Action-oriented research; Biofuels; Ex ante scale dynamics analysis; Mozambique; Policy processes; Scale and level; Sustainability. |
| Ano: 2013 |
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| Prins, Anne Gerdien; Netherlands Environmental Assessment Agency (PBL); Annegerdien.Prins@pbl.nl; Eickhout, Bas; Netherlands Environmental Assessment Agency (PBL); European Parliament; Bas.Eickhout@pbl.nl; van Meijl, Hans; Agricultural Economics Institute (LEI); Hans.vanMeijl@wur.nl; Rienks, Willem; Rom3D, formerly Alterra, Research Institute for the Green Space, Wageningen University and Research Centre; Willem.Rienks@wur.nl; Woltjer, Geert; Agricultural Economics Institute (LEI); Geert.Woltjer@wur.nl. |
| Food supply and food distribution have been and are important issues in the global political arena. The recent emergence of biofuel policies has increased the influence of the policy arena on agricultural production. In this paper we show the regional impact of changes in the European Common Agricultural Policy and biofuel policy. Shifting trade patterns, changes in agricultural production, and expansion of agricultural area or intensification of agriculture result in changes in land use and land use emissions. Higher prices for agricultural crops on the world market together with changing production raise agricultural income. Brazil is the region the most affected. The results show that arrangements or policies will be needed to avoid negative impacts in... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Agricultural income; Biodiversity; Biofuels; CAP reform; Land use. |
| Ano: 2011 |
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| Obidzinski, Krystof ; Center for International Forestry Research (CIFOR); kobidzinski@cgiar.org; Andriani, Rubeta ; Center for International Forestry Research (CIFOR) ; r.andriani@cgiar.org; Komarudin, Heru; Center for International Forestry Research (CIFOR) ; h.komarudin@cgiar.org; Andrianto, Agus ; Center for International Forestry Research (CIFOR) ; a.andrianto@cgiar.org. |
| This paper reviews the development of oil palm with linkages to biofuel in Indonesia and analyzes the associated environmental and socioeconomic impacts. We selected three plantation study sites in West Papua (Manokwari), West Kalimantan (Kubu Raya), and Papua (Boven Digoel) to assess the impacts. Research findings indicate that the development of oil palm in all three sites has caused deforestation, resulting in significant secondary external impacts such as water pollution, soil erosion, and air pollution. In terms of social impacts, many stakeholder groups, i.e., employees, out-growers, and investing households, report significant gains. However, we found these benefits were not evenly distributed. Other stakeholders, particularly traditional... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Biofuels; Environmental impacts; Oil palm; Socioeconomic benefits. |
| Ano: 2012 |
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| Gonzalez,Ramon. |
| Metabolic engineering was formally defined more than two decades ago (Bailey, 1991) and it is now an established discipline. Metabolic engineering is generally defined as the directed improvement of product formation or cellular properties through the modification of specific biochemical reactions or the introduction of new ones with the use of recombinant DNA technology (Bailey, 1991; Stephanopoulos et al. 1998). Therefore, the analysis and engineering/synthesis of metabolic pathways is of central importance to metabolic engineering. The analytical part uses a number of experimental and modeling techniques for the systematic study of cellular responses (in terms of RNA, protein and metabolite levels, metabolic fluxes, etc.) to genetic and environmental... |
| Tipo: Journal article |
Palavras-chave: Biofuels; Escherichia coli; Metabolic engineering; Systems biology. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000300017 |
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| Silva,Magnun A. P. Da; Biaggioni,Marco A. M.; Sperotto,Felipe C. S.; Macedo,Ana C.; Brandão,Fernando J. B.. |
| ABSTRACT The objective of this study was to evaluate the effect of different drying methods on seed coat pigmentation and quality of oil and biodiesel extracted from crambe. The experimental design was completely randomized with five treatments and four replications, totaling 20 plots. The treatments consisted of drying with heated air, natural air, ground, in the shade and in the plant. Physical and chemical analyzes were performed to verify the quality of grain, oil and biodiesel. The largest amounts of chlorophyll a and b and green beans and the lowest oil content were found in artificial drying with heated air. It was concluded that the drying in the plant presented grains and oil of better quality, but do not interfering in the quality of biodiesel,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll; Biofuels; Oilseed. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601167 |
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| Fonseca,Bruna Constante; Riaño-Pachón,Diego Mauricio; Guazzaroni,María-Eugenia; Reginatto,Valeria. |
| Abstract We report on the nearly complete genome sequence of Clostridium beijerinckii strain Br21, formerly isolated from a sugarcarne vinasse wastewater treatment plant. The resulting genome is ca. 5.9 Mbp in length and resembles the size of previously published C. beijerinckii genomes. We annotated the genome sequence and predicted a total of 5323 genes. Strain Br21 has a genetic toolkit that allows it to exploit diverse sugars that are often found after lignocellulosic biomass pretreatment to yield products of commercial interest. Besides the whole set of genes encoding for enzymes underlying hydrogen production, the genome of the new strain includes genes that enable carbon sources conversion into butanol, ethanol, acetic acid, butyric acid, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clostridium; Biofuels; Biohydrogen; Beta-glucosidase. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572019000100139 |
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| Gallinari,Rafael Henrique; Coletta,Rafael Della; Araújo,Pedro; Menossi,Marcelo; Nery,Mariana Freitas. |
| Abstract Hemicellulose and cellulose are essential polysaccharides for plant development and major components of cell wall. They are also an important energy source for the production of ethanol from plant biomass, but their conversion to fermentable sugars is hindered by the complex structure of cell walls. The glucuronic acid substitution of xylan (GUX) enzymes attach glucuronic acid to xylan, a major component of hemicellulose, decreasing the efficiency of enzymes used for ethanol production. Since loss-of-function gux mutants of Arabidopsis thaliana enhance enzyme accessibility and cell wall digestion without adverse phenotypes, GUX genes are potential targets for genetically improving energy crops. However, comprehensive identification of GUX in... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: GUX; Sugarcane; Phylogeny; Angiosperms; Biofuels. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100602 |
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| Registros recuperados: 161 | |
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