|
|
|
| Registros recuperados: 38 | |
|
|
| Xiang,Heng; Zhang,Ruizhi; Li,Nengzhang; Vossbrinck,Charles R.. |
| There are numerous examples of convergent evolution in nature. Major ecological adaptations such as flight, loss of limbs in vertebrates, pesticide resistance, adaptation to a parasitic way of life, etc., have all evolved more than once, as seen by their analogous functions in separate taxa. But what about protein evolution? Does the environment have a strong enough influence on intracellular processes that enzymes and other functional proteins play, to evolve similar functional roles separately in different organisms? Manganese Superoxide Dismutase (MnSOD) is a manganesedependant metallo-enzyme which plays a crucial role in protecting cells from anti-oxidative stress by eliminating reactive (superoxide) oxygen species. It is a ubiquitous housekeeping... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Convergence; Hydrophobic cluster analysis; Manganese superoxide dismutase; Phylogeny; Structure. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000300019 |
| |
|
|
| Bearzi, M.; Stanford, C.B.. |
| Dolphins and African apes are distantly related mammalian taxa that exhibit striking convergences in their socioecology. In both cetaceans and African apes, two or more closely related species sometimes occur in sympatry. However, detailed reviews of the ways in which sympatric associations of dolphins and apes are similar have not been done. As field studies of dolphins and apes have accumulated, comparisons of how the two groups avoid direct food competition when in sympatry have become possible. In this paper we review sympatric ecology among dolphins and African apes, and examine convergences in species-associations in each taxa. We review evidence for hypotheses that seek to explain avoidance of food competition, and consider whether ape-dolphin... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Sympatry; Convergence; Resource partitioning; 42.84. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/262646 |
| |
|
| |
|
| |
|
|
| Gutierrez, Luciano. |
| Agriculture productivity varies dramatically in different regions of the world. Using recent theories of economic growth and new data sets (Larson and al., 1999) as a guide, this study finds some empirical regularities between agricultural labour productivity growth, investment and education, as also for environmental factors, for 44 countries during the period 1980-1993. We find strong evidence that where agricultural investment and educated people rates are higher, agricultural labour productivity grows faster. Secondly, geographical factors as well as freer trade influence growth. Finally, we find evidence of conditional convergence, which means that cross-country agricultural productivity does not converge to the same level of steady state but that... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Growth; Labour productivity; Convergence; Labor and Human Capital; Productivity Analysis. |
| Ano: 2000 |
URL: http://purl.umn.edu/21741 |
| |
|
|
| Wei, Song. |
| Based on the conclusion of the related researches on China’s rural poverty alleviation policies and poverty problems, studies of Chinese scholars on the convergence between rural minimum subsistence system and the development policies of poverty alleviation are illustrated and personal understandings proposed. On the one hand, considering the actual situations of the quickening of China’s urbanization and deepening of poverty, it is necessary to make significant adjustment and transformation in China’s poverty reduction policies and minimum subsistence security system. On the other hand, it is pointed out that there is no omnipotent experience to follow in the convergence of minimum subsistence security system and poverty reduction policies. The actual... |
| Tipo: Journal Article |
Palavras-chave: Countryside; Minimum subsistence security system; Poverty alleviation and development; Convergence; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/113486 |
| |
|
|
| Regmi, Anita; Unnevehr, Laurian J.. |
| Whether food demand is "converging" is tested in two ways. First, the convergence of food expenditures among 18 high-income countries is examined from 1990 to 2004. Convergence is apparent in total expenditures, cereals, and meats, even after correcting for differences in income and levels of protection. Second, specific food retailing and product introduction patterns are examined for the US, Canada, and four northern European countries for the past two decades. These show increasing shares for retail outlets selling standardized products, and increased preference for convenience, upscale, and natural product attributes across all six countries. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food expenditures; Product attributes; Convergence; Demand and Price Analysis; D12; Q18. |
| Ano: 2005 |
URL: http://purl.umn.edu/24687 |
| |
|
|
| Ludena, Carlos E.; Hertel, Thomas W.; Preckel, Paul V.; Foster, Kenneth A.; Nin Pratt, Alejandro. |
| There is considerable interest in projections of future productivity growth in agriculture. Whether one is interested in the outlook for global commodity markets, future patterns of international trade, or the interactions between land use, deforestation and ecological diversity, the rate of productivity growth in agriculture is an essential input. Yet solid projections for this variable have proven elusive particularly on a global basis. This is due, in no small part, to the difficulty in measuring historical productivity growth. The purpose of this paper is to report the latest time series evidence on total factor productivity growth for crops, ruminants and non-ruminant livestock, on a global basis. We then follow with tests for convergence amongst... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Malmquist index; Productivity; Convergence; Projections; Crops; Livestock; Productivity Analysis; D24; O13; O47; Q10. |
| Ano: 2006 |
URL: http://purl.umn.edu/25392 |
| |
|
|
| Monasterolo, Irene. |
| The paper underlines the progresses Hungary undertook during the pre-accession process and after the European Union membership in regional economic development. Using official documents of the European Institutions, statistical data provided by Inforegio, Eurostat, the Hungarian National Institute of Statistics, FADN-DG Agriculture and AKI Ive evaluated the impact of the European objectives and instruments for the cohesion (Structural funds and the Cohesion fund) on the convergence of the Country with the European parameters. The results obtained show a slow evidence of economic convergence but also the emergence and increase of internal divergence between winning and loosing counties, these last being prevalently agricultural, with problems of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: European regional policy; Convergence; Cohesion; Agricultural reforms.; Community/Rural/Urban Development. |
| Ano: 2007 |
URL: http://purl.umn.edu/7800 |
| |
|
| |
|
|
| Fochezatto, Adelar; Stulp, Valter Jose. |
| The study analyzes the convergence of the labor productivity in the Brazilian agricultural sector in the nineties, comparing it with its productivity in the other sectors and projecting its future behavior through Markov matrices. The results indicate that the Brazilian states are diverging in the labor productivity in the agricultural sector. Some states will move to a high level and others to a low level of labor productivity. In five of the other sectors of the Brazilian economy there will be a convergence of the states with regard to the labor productivity. In three of these five sectors the states will converge to a low level of labor productivity; in one sector they will converge to two classes of low productivity and in another sector the states... |
| Tipo: Journal Article |
Palavras-chave: Agricultural; Labor productivity; Convergence; Markov model; Agribusiness. |
| Ano: 2008 |
URL: http://purl.umn.edu/61233 |
| |
|
| |
|
| |
|
|
| Theil, Henri; Deepak, Sri Devi. |
| We use international comparison data of Summers and Heston to trace the development of three regions in Western Europe: the countries currently outside the European Union (EEC), the EEC Center, and the EEC Periphery (Greece, Ireland, Portugal, and Spain). For each year during the period 1950-1990, the per capita gross domestic products of these regions decrease in this order, but the development over time shows a rapid increase of all three regions as well as a mutual convergence, the inequality of the regions and their constituent countries declining substantially. |
| Tipo: Journal Article |
Palavras-chave: Convergence; GDP; Inequality; Purchasing power parity; Western Europe; World Penn Tables. |
| Ano: 2003 |
URL: http://purl.umn.edu/43297 |
| |
|
| |
|
| |
|
| |
|
| |
| Registros recuperados: 38 | |
|
|
|
