Miami-Dade County Superintendent Alberto Carvalho announces Miami-Dade schools will be closed on Monday due to Tropical Storm Isaac. MIAMI (CBSMiami) â Miami-Dade County Schools superintendent Alberto Carvalho announced Saturday that all classes have been canceled for Monday, August 27.
Biochar is charcoal used as a soil amendment. Like most charcoal, biochar is created by pyrolysis of biomass. Biochar is under investigation as an approach to carbon sequestration to produce negative carbon dioxide emissions. Biochar thus has the potential to help mitigate climate change, via carbon sequestration.re-Columbian Amazonians are believed to have used biochar to enhance soil productivity. They produced it by smoldering agricultural waste (i.e., covering burning biomass with soil) in pits or trenches. European settlers called it terra preta de Indio.
Eschar (es-CAR) is dead tissue that sheds or falls off from healthy skin. It is caused by burns and also occurs in pressure wounds (bedsores). Eschar is typically tan, brown, or black and may be crusty.Wounds are classified into stages based on how deep they are and how much skin tissue is affected.When a wound has eschar on top of it, the wound cannot be classified.he eschar may be either softer or firmer than the skin around it. Eschar is often a part of a larger wound. The area around the eschar may appear red or tender to the touch. The area also may be swollen or fluid-filled.