نتایج جستجو برای: by environmental pressures analysis

تعداد نتایج: 8635662  

2015
Ivana Cvijović Benjamin H. Good Elizabeth R. Jerison Michael M. Desai

Natural environments are never truly constant, but the evolutionary implications of temporally varying selection pressures remain poorly understood. Here we investigate how the fate of a new mutation in a fluctuating environment depends on the dynamics of environmental variation and on the selective pressures in each condition. We find that even when a mutation experiences many environmental ep...

Journal: :European respiratory review : an official journal of the European Respiratory Society 2014
Yochai Adir Alfred A Bove

Hydrostatic lung injuries The evolution of fish to amphibians, reptiles to endothermic birds and mammals has been accompanied by a progressively thinner pulmonary blood gas barrier, to accommodate the constraint of increased oxygen uptake and carbon dioxide output [1]. Accordingly, pulmonary circulation has evolved as a separate high flow–low pressure system. In humans, mean pulmonary artery pr...

Journal: :Coastal Engineering Proceedings 1974

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده زبانهای خارجی 1391

since esp received universal attention to smooth the path for academic studies and productions, a great deal of research and studies have been directed towards this area. swales’ (1990) model of ra introduction move analysis has served a pioneering role of guiding many relevant studies and has proven to be productive in terms of helpful guidelines that are the outcome of voluminous productions ...

Journal: :Canadian Geotechnical Journal 2016

Journal: :Corporate Social Responsibility and Environmental Management 2011

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