Abstract: A method of attaching metal compounds to articles formed from synthetic polymers wherein the articles are subjected to the action of hydrogen sulfide under pressure or to the action of an aqueous solution of a thioacetamide or thiourea, and then to the action of an aqueous solution of a silver, copper (cupric or cuprous), lead, tin or mercury salt. This method makes it possible to obtain articles, particularly textile articles, of improved electrical conductivity.

Abstract: A jetty arranged angularly to the edges of a body of water so as to slow down or detour the currents having a pile of fill with its base resting on an excavation and an unwoven fabric surrounding the pile with wave breaking means surmounting the pile.

Abstract: A method of ultrafiltration and an artificial kidney therefor, in which a membrane which is capable of simultaneous ultrafiltration and dialysis of blood is arranged to form a portion of the wall of a constant volume, closed loop vessel. A dialysis liquid is circulated in the vessel, while blood is passed on the opposite face of the membrane, and a fraction of the dialysis liquid is withdrawn from the vessel at a predetermined rate. The remainder of the dialysis liquid is kept at a constant temperature and is regenerated.

Abstract: A process and apparatus for purification of a sodium chloride solution dialysis liquid in which the liquid is subjected to an electrolysis.

Abstract: A process for preparing high molecular weight aryl alkyl polymers is disclosed, wherein oxalic acid and paraphenylene diisocyanate are reacted in substantially stoichiometric amounts in a polar, aprotic anhydrous organic solvent at a temperature which is raised progressively at a rate of about 1 to about 5.degree.C per minute from a lower temperature of about 0.degree. to 30.degree. C to a higher temperature of about 80.degree. to about 150.degree.C in the presence of, at least when the viscosity of the reaction mixture exceeds 6,000 poises, a viscosity reducing amount of a hydrogen bond breaking agent, such as lithium chloride.The resulting polymers can be formed into filaments, fibers and films, and the filaments exhibit improved tensile strengths and modulus of elasticity as compared to similar filaments of other arylalkyl polymers based on oxalic acid and other aromatic diisocyanates.