Today climate change is one of the most important human concerns This fact affected human life in different ways .  one of the most important impacts of climate change is on crops yield so that change in temperature  regime  particularly maximum and minimum  temperatures  is noticeably change plants production . in this research , is considered to  impact of climate change on water requirement ...

ABSTRACT After performing the morpho-kinematic analysis of planetary nebula (PN) PC 22, we now present its nebular and stellar analysis. The plasma investigation relies on novel use a Monte Carlo associated with pyneb code for uncertainty propagation. innermost region shows electronic temperatures Te ≈ 10 800 K using [N ii] ≈13 000 [O iii] densities ne 600 cm−3. We also used first time machine ...

RESUMO As mudanças climáticas podem causar alterações drásticas nos ecossistemas lacustres especialmente em razão da elevação temperatura e das na precipitação, provocando, entre outros fatores, aumento no aporte de nutrientes e, consequentemente, eutrofização. Este trabalho apresenta a estimativa projeções vazão carga (NO3−, PO4–3) afluentes à lagoa Mangueira — grande rasa subtropical localiza...

Climate projections for the fourth assessment report1 (AR4) of the Intergovernmental Panel on Climate Change (IPCC) were based on scenarios from the Special Report on Emissions Scenarios2 (SRES) and simulations of the third phase of the Coupled Model Intercomparison Project3 (CMIP3). Since then, a new set of four scenarios (the representative concentration pathways or RCPs) was designed4. Clima...