Juan Valdés

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Air pollution in Santiago is a serious problem every winter, causing thousands of cases of breathing problems within the population. With more than 6 million people and almost two million vehicles, this large city receives rainfall only during winters. Depending on the frequency of storms, statistics show that every time it rains, air quality improves for a(More)
[1] Recent observations show a decrease in the fraction of precipitation falling as snowfall in the western United States. In this work we evaluate a historical and future climate simulation over the Colorado River Basin using a 35 km continuous 111 year simulation (1969–2079) of the Weather Research and Forecasting (WRF) regional climate model with(More)
In recent years, there has been increasing interest for the use of hydrocolloids, particularly for the gums, these fact due to need to incorporate new natural sources from plants that for their physical, chemical and biological properties are excellent component to development of better drugs and food. Karaya gum is the most important hydrocolloid from(More)
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