Abstract: The present invention is related to a cooking appliance (100) comprising a first cooking plate (1) and a second cooking plate (2), said second cooking plate (2) being positionable in an operating condition, in which it faces the first cooking plate (1), so as to be able to heat a product positioned on the first cooking plate (1), and in an open condition in which it is lifted with respect to the first cooking plate (1) in such a way to allow freely positioning a food product on the first cooking plate (1), the cooking appliance (100) comprising a positioning device (3) for adjusting the position of the second cooking plate (2) with respect to the first cooking plate (1) when the second cooking plate (2) is in the operating condition, the positioning device allowing movements of the second cooking plate (2) with respect to the first cooking plate (1) having at least two degrees of freedom; it further comprises a control unit (4) operatively associated to the positioning device (3) and configured to control mov

Abstract: The present invention is related to a cooking appliance (100) comprising a first cooking plate (1) and a second cooking plate (2), said second cooking plate (2) being positionable in an operating condition, in which it faces the first cooking plate (1), so as to be able to heat a product positioned on the first cooking plate (1), and in an open condition in which it is lifted with respect to the first cooking plate (1) in such a way to allow freely positioning a food product on the first cooking plate (1), the cooking appliance (100) comprising a positioning device (3) for adjusting the position of the second cooking plate (2) with respect to the first cooking plate (1) when the second cooking plate (2) is in the operating condition, the positioning device allowing movements of the second cooking plate (2) with respect to the first cooking plate (1) having at least two degrees of freedom; it further comprises a control unit (4) operatively associated to the positioning device (3) and configured to control mov

Abstract: A process is disclosed for the production of acidic solutions of activated silica and polyvalent metal salt for water treatment. Activated silica is formed during the process of acidifying a sodium silicate solution to below pH 2 with sulfuric acid. A polyvalent metal salt is then added to stabilize the acidified activated silica.

Abstract: A process is disclosed for the treatment of water to reduce the production of undesirable DBPs, such as THMs, when Fluo-chlorine is used as a disinfectant. The process replaces conventional chlorination with fluoride/chlorine mixtures that disinfect and fluoridate simultaneously.

Abstract: A process is disclosed for the production of activated silica for water treatment. The process acidifies the silicate and uses caustic material to raise the pH to less than 12 to stabilize the activated silica. The process improves the efficiency of the coagulation/flocculation/sedimentation processes used in water treatment.

Abstract: The present invention relates to a ferrous article suitable for use in devices for burning heavy and extra heavy petroleum fuels and a process for forming such an article. The article has a matrix formed from a low carbon steel and a corrosion resistant chromium-aluminum diffusion coating on at least one surface. The coating is formed by subjecting the matrix to successive aluminization and chromization pack cementation treatments.

Abstract: The present invention relates to a ferrous article suitable for use in devices for burning heavy and extra heavy petroleum fuels and a process for forming such an article. The article has a matrix formed from a low carbon steel and a corrosion resistant chromium-aluminum diffusion coating on at least one surface. The coating is formed by subjecting the matrix to successive aluminization and chromization pack cementation treatments.