A data warehouse system for management of ecological data relating to tropical lakes and wetlands, comprising a data acquisition unit managed by an administrator, functioned to import the ecological data from a plurality of sub-databases; a database…

The present invention relates to a communication device for a person with communication impairment comprising: a base; a display screen; a plurality of functional blocks; an enclosure coupled to the base; and characterized by: a digital audio…

A method for producing an aqueous sugar solution from cellulosic materials comprising the steps of heating ground cellulosic materials with perchloric acid; neutralizing the heated materials with an alkali to yield a salt precipitate; and filtering…