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This paper presents the main objectives of the economic policy in Egypt as revealed in a study of recent history. The merits and shortcomings of the major policies are appraised and it is argued that far reaching changes in economic policy are needed. Principles to guide the change are formulated and examples of possible reforms presented. Suggestions are given for maximizing the economic benefit to Egypt from the exploitation of its natural gas deposits.
Cet article présente les objectifs principaux de la politique économique de l'Egypte tels qu'ils ressortent d'une étude réalisée récemment. Il évalue les mérites et les insuffisances des politiques majeures et fait valoir que des changements de longue portée dans la politique économique sont nécessaires. Les principes qui doivent guider ces changements sont énoncés et des exemples de réformes possibles sont présentés. Des suggestions sont faites pour optimiser le bénéfice que l'Egypte est en droit d'attendre de l'exploitation de ses gisements de gaz naturel.
Este articulo presenta los objectivos principales de la economía política de Egipto tal como se revelan en un estudio de la historia reciente. Se evalúan los méritos y desventajas de las políticas principales y se arguye que es necesario hacer cambios de gran alcance en la política económica. Se formulan luego los principios para guiar dichos cambios y se dan ejemplos de posibles reformas. Se dan también sugerencias para maximizar los beneficios económicos de Egipto, derivados de la explotación de sus depoósitos de gas natural.  相似文献   
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The U.S. Department of Agriculture (USDA) pepper (Capsicum spp.) germplasm collection contains several thousand members or accessions. Many of these species and cultivars have not been analyzed for their concentrations of ascorbic acid, capsaicin, and total phenolic compounds, which are important antioxidants having a number of benefits for human health. The objective of this investigation was to select candidate accessions of hot pepper having high concentrations of ascorbic acid, capsaicin, free sugars, and total phenols for use as parents in breeding for these compounds. Seventeen accessions of pepper from the core Capsicum germplasm collection (four accessions of Capsicum chinense; five accessions of C. baccatum; six accessions of C. annuum; and two of C. frutescens) were field grown and their mature fruits were analyzed for their antioxidant composition. Concentrations of these compounds tended to be higher in C. chinense and C. baccatum, than in C. annuum and C. frutescens. Across all accessions the concentration of total phenols was correlated with ascorbic acid (r = 0.97) and free sugars (r = 0.80). Concentrations of total phenols (1.4, 1.3, and 1.3 mg g?1 fruit) and ascorbic acid (1.6, 1.2, and 1.3 mg g?1 fruit) were significantly greater in PI-633757, PI-387833, and PI-633754, respectively, compared to other accessions analyzed. Total capsaicinoids concentrations were greatest (1.3 mg g?1 fruit) in PI-438622 and lowest (0.002 mg g?1 fruit) in Grif-9320. The great variability within and among Capsicum species for these phytochemicals suggests that these selected accessions may be useful as parents in hybridization programs to produce fruits with value-added traits.  相似文献   
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Some Aspects of Water Resources Planning and Management in Smaller Islands   总被引:1,自引:0,他引:1  
This paper reviews some of the issues and problems peculiar to water resources development and management in island countries. It indicates difficulties encountered and prospective solutions; reference is made to the technical support being provided in this respect by the United Nations Department of Technical Co-operation for Development.
Cet article passe en revue certains des problèmes concernant la mise en valeur et la gestion des ressources en eau dans les pays insulaires. Il fait état des difficultés rencontrées ainsi que des solutions envisagées. Il mentionne également l'aide technique fournie dans ce domaine par le Département de la coopération technique pour le développement des Nations Unies.
Este artículo examina algunos temas y problemas que son peculiares al desarrollo de recursos de agua y su administración en los países islas. Se señalan las dificultades encontradas y soluciones potenciales; a este respecto se mencionan la asistencia técnica que provee el Departamento de Cooperación Técnica para el Desarrollo de las Naciones Unidas.  相似文献   
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Conservation Genetics in the Management of Desert Fishes   总被引:3,自引:0,他引:3  
Abstract: The status and security of fishes in North American deserts have steadily declined in this century due to man's activities in this naturally fragile region. We address genetic aspects of the population structure of desert fishes as applicable to conservation and recovery programs by developing two zoogeographic models of isolation and gene flow. In the Death Valley model populations are isolated, with no chance of natural gene flow among them. Genetic diversity within populations tends to be low, but genetic divergence among populations within a species is high. In the Stream Hierarchy model, a complicated hierarchical genetic structure exists and is a function of geographic proximity and connectivity of habitats. Within-habitat genetic diversity tends to be higher, and among-habitat differentiation lower, than in the Death Valley model. These two systems must be recognized as distinct and managed differently. We also suggest three areas of experimentation needed to better understand and manage genetic stocks of desert fishes: relationships between heterozygosity and fitness, experimental mixing of similar stocks to examine effects of increased heterozygosity, and analysis of the relative roles of genetic adaptation and phenotypic plasticity in local differentiation.  相似文献   
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