Resultados de búsqueda - "A"

A simple model for simulating immunity rate dynamics in a tropical free-range poultry population after avian influenza vaccination por Lesnoff, Matthieu, Peyre, M., Duarte, P.C., Renard, J.F., Mariner, Jeffrey C.

“…We present a simple Leslie matrix model for estimating population turnover and PIR dynamics in a hypothetical small-size vaccinated free-range poultry population. …”
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Mapping the hydrological processes in a community-reconfigured river basin: some conceptual issues and results from a simple dry run por Krishnan, S., Verma, S.

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The turnover and self management of irrigation institutions in developing countries: a discussion paper for a new program of the International Irrigation Management Institute por Vermillion, Douglas L.

“…Discussion paper describing a new IIMI program for research, information and institutional support services concerning the turnover, privatization and self management of irrigation systems in developing countries.…”
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Use of historical data as a decision support tool in watershed management: a case study of the Upper Nilwala Basin in Sri Lanka por Elkaduwa, W.K.B., Sakthivadivel, Ramaswamy

“…Watershed analysis provides a framework for ecosystem management, which is currently the best option for conservation and management of natural resources. …”
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Development of a tool for managing groundwater resources in semi-arid hard rock regions: application to a rural watershed in South India por Dewandel, B., Perrin, J., Ahmed, S., Aulong, S., Hrkal, Z., Lachassagne, P., Samad, Madar, Massuel, S.

“…Until recently, aquifers located in hard rock formations (granite, gneiss, schist) were considered as a highly heterogeneous media, and no adequate methodology for groundwater management was available. …”
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Impact of planted fallows and a crop rotation on nitrogen mineralization and phosphorus and organic matter fractions on a Colombian volcanic-ash soil por Basamba, T.A.A., Barrios, E., Singh, B.R., Rao, Idupulapati M.

“…Soil fertility replenishment is a critical factor that many farmers in the tropical American hillsides have to cope with to increase food crop production. …”
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Minjingu phosphate rock applications increase the population of phosphate solubilising microorganisms with a positive impact on crop yields in a Kenyan Ferralsol por Ndung'u-Magiroi, Keziah Wairimu, Waswa, Boaz Shaban, Bationo, B. André, Okalebo, John Robert, Othieno, Caleb, Herrmann, Laetitia, Lesueur, Didier

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La Peste des Petits Ruminants : La recherche scientifique a du mal à tordre le coup au virus por Technical Centre for Agricultural and Rural Cooperation

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Identification by deep sequencing of a "Caulimo-like" virus in a potato botanical seed germplam accession imported from South America por Abad, J.A., Li, R., Fuentes, S., Kreuze, Jan F., Loschinkohl, C., Bandla, P.

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Transformation of cassava cv. TMS60444 (MNig11) with A. tumefaciens carrying a cry1Ab gene for insect resistance por Ladino Franco, Y.J., Mancilla, LI, Chavarriaga Aguirre, Paul, Tohme, Joseph M., Roca, W.

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Forming a community of practice to strengthen the capacities of learning and knowledge sharing centres in Latin America and the Caribbean: a Dgroup case study por Carvajal, A., Mayorga, O, Douthwaite, Boru

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A study of some economic traits in a herd of Kenana cattle (Northern Sudan Zebu) I. Birth weight in Kenana cattle por Khalifa, H.A.A., Khalafallah, A.M.

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A large-scale intervention to introduce orange sweet potato in rural Mozambique increases vitamin A intakes among children and women por Hotz, C., Loechl, C., de Brauw, Alan, Eozenou, P., Gilligan, Daniel O., Moursi, M., Munhaua, B., Jaarsveld, P.J. van, Carriquiry, A., Meenakshi, J.V.

“…β-Carotene-rich orange sweet potato (OSP) has been shown to improve vitamin A status of infants and young children in controlled efficacy trials and in a small-scale effectiveness study with intensive exposure to project inputs. …”
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Sequence characterization of a Peruvian isolate of sweet potato chlorotic stunt virus: Further variability and a model for p22 acquisition por Cuéllar, Wilmer Jose, Cruzado, R., Fuentes, S., Untiveros, M., Soto, M., Kreuze, Jan F.

“…A role for p22 as a pathogenicity enhancer of SPCSV is also provided by complementary expression of p22 in transgenic sweetpotato plants.…”
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A comparative analysis of the fatty acid composition of sexual and asexual eggs of Daphnia magna and its plasticity as a function of food quality por Putman, A., Martin Creuzburg, D., Panis, Bartholomeus, Meester, L. de

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Produccion y consumo de frijol seco y su contribucion a la oferta de proteina a nivel mundial por Infante, MA, Scobie, Grant M., Gutiérrez Palacios, Uriel

“…Dry bean production in L.A. is generally done by small producers, largely in association with other crops, principally, maize. …”
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Changes in land cover/land use as a possible indicator of sustainable development in a hillside environment of rio Cabuyal in Cauca, Colombia por Knapp, E.B., Urbano, P, Bell, W.B., Rubiano Mejía, Jorge Eliécer

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Genetica de los caracteres agro-morfologicos y fisiologicos relacionados a la tolerancia a sequia en papas diploides por Khan, A., Saravia, D., Munive, S., Bonierbale, Merideth W., Farfán, E.

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A novel approach to estimate direct and indirect water withdrawals from satellite measurements: a case study from the Incomati basin por Eekelen, M.W. van, Bastiaanssen, Wim G.M., Jarmain, C., Jackson, B., Ferreira, F., Zaag, P. van der, Okello, A.S., Bosch, J., Dye, P., Bastidas-Obando, E., Dost, R.J.J., Luxemburg, W.M.J.

“…The Incomati basin encompasses parts of South Africa, Swaziland and Mozambique, and is a water stressed basin. Equitable allocation of water is crucial to sustain livelihoods and agro-ecosystems, and to sustain international agreements. …”
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A Guide for participatory mapping of ecosystem services in multiuse agricultural landscapes: How to conduct a rapid spatial assessment of ecosystem services por Braslow, Juliet, Cordingley, Justine E., Snyder, Katherine A.

“…This guide presents a step-by-step approach in using a participatory mapping method with community members to rapidly identify and map ecosystem services and changes in their supply across multiuse agricultural landscapes. …”
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