The invention relates to a method for determining the spatial content of spaces, especially subterranean spaces, such as for example cavities, caverns, caves and the like. The essence of the invention resides in the fact that the volume of a medium filling the space being studied is changed by a sudden and short-lived increase or decrease in volume. In this arrangement, the pressure prevailing in ...

PCT No. PCT/DK89/00302 Sec. 371 Date Jun. 21, 1991 Sec. 102(e) Date Jun. 21, 1991 PCT Filed Dec. 21, 1989 PCT Pub. No. WO90/07106 PCT Pub. Date Jun. 28, 1990.A method of photometric in vitro determination of at least one blood gas parameter in a sample of whole blood. The whole blood sample is obtained by connecting an at least partially transparent sample container to an in vivo locality and tran...

Disclosed are blends of about 99 to about 10 weight % of poly(ethylene terephthalate) and about 1 to about 90 weight % of a polyester of trans-4,4'-stilbenedicarboxylic acid and at least one aliphatic glycol having 2 to 16 carbon atoms. The blends have improved gas barrier properties and improved chemical resistance. rcj/Montgomery/55709/289235FF

PROCESS FOR THE PREPARATION OF EXPANDABLE STYRENE POLYMERS Of The Disclosoure A process for preparing expandable styrene polymers by extruding a mixture of a styrene polymer, blowing agent, organic bromine compound and dicumyl as a synergist, cooling the extrudate so that it does not foam and while the inside of the extrudate is still plastic deforming it by stretching and/or milling, then reducin...

RIGID POLYPHOSPHAZENE FOAM AND PROCESS FOR MAKING SAME Low density rigid foamed polyphosphazene articles having excellent physical and flammability properties are made by masticating a mixture of high molecular weight weight linear polyphosphazene, a curing agent (e.g., sulfur), an accelerator, a blowing agent and optionally fillers, processing aids and the like to form a substantially homogeneous...

Laminates are provided of at least one polynorbornene prepreg comprising a substrate coated with a polynorbornene secured to a conductive surface, such as copper having an etched matte texture thereon. Adhesion between the polynorbornene prepreg and the conductive surface is improved by coating the conducting surface with as silane coupling agent and/or by providing polyolefin film therebetween. T...

The extrusion of a vinylidene chloride interpolymer pellets is improved by coating with at least one processing aid. Exemplary, processing aid are fatty acid; esters; fatty alcohols; fatty amides; metallic salts of fatty acids; olefin polymers and polyolefin waxes. 36,242-F

A process of bonding aromatic polyamide fibers to rubber compounds is disclosed, which comprises: the first step of treating fibers with an aqueous mixture comprising a resorcinol/formalin resin and a latex of a polymer containing halogens in amounts of not less than 45 % by weight based on the polymer; the second step of treating the fibers with an aqueous adhesive composition comprising a reso...

A crosslinkable polymer composition comprises an olefin copolymer or graft copolymer with hydrolysable silane groups and a silanol condensation catalyst, as well as a silane compound with at least one hydrolysable organic group. The polymer composition is characterised in that the silane compound has a compatibility with the polymer composition of at least 0.035 mole hydrolysable groups per 100 g ...

18 A composition and method for reducing particulate emissions from a diesel engine without measurably increasing NOx emissions from the diesel engine comprises: i) burning in the diesel engine in excess air a fuel oil containing 0.01 ppm to 1 ppm of iron in a compound selected from the group consisting of ferrocene and its derivatives represented by the formula: wherein each of R and R', independ...

Xanthines of formula (I) and their optical isomers and acid-addn. salts are new: R1 = 1-6C alkyl, 3-4C alkenyl or 3-4C alkynyl; R2 = 1-6C alkyl, 3-4C alkenyl, 3-4C alkynyl or opt. substd. benzyl; R3 = (a) C-bonded satd. or unsatd. 5- to 7-membered heterocyclyl contg. one or more O and/or S atoms, opt. substd. by 1-6C alkyl, oxo, CHO, CH2OR4, CH2OR7, COOR4 or CONR5R6; where furyl and thienyl gps. a...

Cement, method of preparing such cement and method of making products using such cement . A cement based on blast-furnace slag and fly ash, characterized in that the cement is a homogeneous dry particulate mixture in ready-to-use from, which comprises blast-furnace slag having a specific surface area of 500-650 m2/kg and fly ash in a weigh ratio in the range of 20/80-60/40, and further comprises t...