Abstract: A pressure chamber has a chamber wall. The chamber wall includes a sensor integrated within the chamber wall, wherein the sensor integrated in the chamber wall comprises defects. A method of determining an effect of pressure on a material is further described. The method includes applying pressure to a material within a pressure chamber and to a pressure chamber wall of the pressure chamber, where the pressure chamber wall has defects. A signal from the defects is sensed while the material and the pressure chamber wall are under pressure. A property of the material is determined based on the sensed signal.

Abstract: The object of the invention is a cutting device to be used with portable trimmers, made by a rigid disc (1) where several centrifugal cutting blades (2) are conveniently fixed. This device can be used with any existing portable trimmers. Also, this device can efficiently cut virtually any kind of vegetation, from small grass to small trees. It was designed to keep cutting with efficiency even after several hard impacts against extremely hard objects, such as stones.

Abstract: A reinforcing product includes a first layer (2) of reinforcing threads (3) parallel to each other and a second layer (4) of reinforcing threads (5) parallel to each other and transverse to the first layer (2). The reinforcing threads (3) in the first layer (2) are partially covered by a powder based on a thermoplastic or thermosetting material forming a bond firstly at points between the reinforcing threads (3) in the first layer (2), and secondly between the reinforcing threads (3) in the first layer (2) and the reinforcing threads (5) in the second layer (4).

Abstract: A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.

Abstract: A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.