888 resultados para Access to water
Resumo:
"November 7, 2005."
Resumo:
"April 9 and 16, 1991"--Pt. 1; "June 6, 1991"--Pt. 2.
Resumo:
Food-related health problems remain widespread throughout the United States. A growing body of research shows that certain populations are disproportionately affected by issues of access to nutritious foods. Limited access is often the result of structural risks and barriers in the “food environment,” including socioeconomic status, physical proximity to food store locations, etc. The purpose of this study is to explore food environments in the city of Seattle for evidence of related disparities between youth of different backgrounds. The findings could support policies to improve access to nutritious foods for all.
Resumo:
Thesis (Master's)--University of Washington, 2016-06
Resumo:
Thesis (Master's)--University of Washington, 2016-06
Resumo:
Thesis (Master's)--University of Washington, 2016-06
Resumo:
Thesis (Master's)--University of Washington, 2016-06
Resumo:
Responses of stomatal conductance (g(s)) and net photosynthesis (A) to changes in soil water availability, photosynthetic photon flux density (Q), air temperature (1) and leaf-to-air vapour pressure deficit (D) were investigated in 4-year-old trees of a dry inland provenance of Eucalyptus argophloia Blakely, and two dry inland provenances (Coominglah and Hungry Hills) and a humid coastal provenance (Wolvi) of Eucalyptus cloeziana F. Muell. between April 2001 and April 2002 in southeast Queensland, Australia. There were minimal differences in A, g, and water relations variables among the coastal and inland provenances of E. cloeziana but large differences between E. argophloia and E. cloeziana. E. argophloia and to a lesser extent the Hungry Hills (inland) provenance of E. cloeziana maintained relatively higher pre-dawn water potential (psi(pd)) during the dry season suggesting possible access to water at depth. Simple phenomenological models of stomatal conductance as a function of Q, T and D explained 60% of variation in gs in E. cloeziana and more than 75% in E. argophloia, when seasonal effect was incorporated in the model. A Ball-Berry model for net photosynthesis explained between 70 and 80% of observed variation in A in both species. These results have implications in matching the dry and humid provenances of E. cloeziana and E. argophloia to suitable sites in subtropical environments. (C) 2004 Elsevier B.V. All rights reserved.