نتایج جستجو برای: throughout human evolution history
تعداد نتایج: 2368886 فیلتر نتایج به سال:
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Introduction: Throughout the history of Mars, aqueous solutions should have existed at some depths below the surface. On early Mars, high geothermal gradients and intensive volcanic activity would have favored near-surface existence of aqueous solutions and sapping of ground water (e.g., [1]). During later epochs, solutions could have been stable deep below the surface, usually below ice-bearin...
run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...
Life-history theory predicts that resource scarcity constrains individual optimal reproductive strategies and shapes the evolution of life-history traits. In species where the inherited structure of social class may lead to consistent resource differences among family lines, between-class variation in resource availability should select for divergence in optimal reproductive strategies. Evaluat...
one of the main areas of human resource strategy, implementing strategic approach to human resource management and human resource strategy. the purpose of the strategic actions of those activities for innovative human resources programs is to create a close relationship between human resources with strategic objectives designed. the purpose of the strategic view of human resource management is ...
A brief accounting is presented of the evolution of natural ecosystems and human cultures including industrialization and its ecologically-significant interactions with natural abiotic and biotic processes of the earth. These accounts show, among other things, that excess resource harvest rates and material releases into the natural environment have been ecological risks of growing scope and sc...
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