Method for purifying a liquid from solid and liquid impurities by flotation-filtration in which the dirt flocks in the liquid to be purified are separated from the liquid to be purified after which they are led to the top of the liquid to form a sludge bed 16 from there to continue out to a sludge canal 17 and to a drain. The purified liquid flows further through a sand filter 18 to an isolated sp...

Method for purifying a liquid from solid and liquid impurities by flotation-filtration in which the dirt flocks in the liquid to be purified are separated from the liquid to be purified after which they are led to the top of the liquid to form a sludge bed 16 from there to continue out to a sludge canal 17 and to a drain. The purified liquid flows further through a sand filter 18 to an isolated sp...

Method for purifying a liquid from solid and liquid impurities by flotation-filtration in which the dirt flocks in the liquid to be purified are separated from the liquid to be purified after which they are led to the top of the liquid to form a sludge bed 16 from there to continue out to a sludge canal 17 and to a drain. The purified liquid flows further through a sand filter 18 to an isolated sp...

Low adherency wound dressings which comprise a wound facing layer, an intermediate absorbent layer and an outer layer characterised in that the wound facing layer comprises a conformable elastomeric apertured film, the intermediate absorbent layer comprises a conformable hydrophilic foam and the outer layer comprises a continuous moisture vapour transmitting conformable film; materials therefor an...

Method for determining at least one characteristic of a casing cemented in a borehole, such as cement bond and casing thickness, from a reflected acoustic signal S(t) obtained by directing an acoustic pulse at a substantially normal incidence towards a radial sector of the wall of the casing, said pulse stimulating thickness resonance within the walls of the casing. The method according to the inv...

A hardener composition for alkaline phenolic resole resin binders which comprises a solution of a benzylic ether resole resin in an ester. Binder compositions comprising this hardener with alkaline phenolic resole resins are further provided as are foundry molding compositions and methods for making foundry cores and molds using the molding compositions.

PURPOSE:To raise the mechanical characteristics of a styrene resin-based film by molding a styrene resin into which rubber particles of an occlusion structure, having an average diameter of 0.3-2mu, and a butadienedominated particles of an average diameter of 0.4mu or less are dispersed into a film. CONSTITUTION:Particles of an average diameter of 0.3-2mu, having an occlusion structure in which st...

PURPOSE: To reduce a manufacturing cost by measuring a variation ratio of a monitor signal for a drive signal supplied to a device, and deciding monitor sensitivity based on differential efficiency of a variation ratio and a device. CONSTITUTION: A correction routine is performed, a controller 44 makes a feedback loop 42 of a device side non-operation by a signal ENS, sets temporarily a monitor se...

PURPOSE:To restrain over-current by placing a high-resistance conductor with a specified electric resistance rate at liquid nitrogen temperature around a superconductor. CONSTITUTION:For the electric resistance rate (p) of a high-resistance conductor 3 which is placed so as to encircle the sheath of a superconductor 1, p>=1X10<-2>muOMEGA.m should be applied at liquid nitrogen temperature (about 77...

PURPOSE:To obtain inexpensive NbNC group superconductive material by depositing a black carbon coat on the surface of a Nb substrate by sputtering to give an element circuit, etc., fine process by a precise control-available laser in an atmosphere including nitrogen. CONSTITUTION:A carbon layer 2 of thickness 1mum or more is deposited on a Nb substrate 1 by a regular sputtering technique to prepar...

PURPOSE:To obtain a linear superconductive material of NbC group compound at a low cost by depositing a black carbon coat on the surface of a Nb substrate by sputtering, etc., to give an element circuit, etc., fine process by a precise control-available laser in an in active atmosphere. CONSTITUTION:A carbon layer 2 of thickness 1mum or more is deposited on a Nb substrate 1 by a ring technique to ...

S P E C I F I C A T I O N "DOWN-HOLE DECELERATORS" A down-hole decelerator for decelerating a device dropped down a borehole in a drilling mud column has an elongate casing immersible in the mud flow with its longitudinal axis along the axis of the borehole. A plunger is slidable axially within the casing to vary the volume of two chambers within the casing and terminates outside the casing in a n...

Apparatus for cleaning pipelines of finite length has a four-way flow reversing valve whose body admits a liquid cleaning agent from an inlet into one port and thence into a pipeline whence the cleaning agent flows back into the body by way of a second port and is discharged by way of an outlet. The valving element is a piston which is reciprocable between two end positions in one of which the flo...

Multi-step biological sewage treatment plant comprising at least two treatment or aeration tanks (31, 32, 33) having an inlet (35) for sewage, an outlet (38) for treated water and a conduit for air supply (31A, 32A, 33A) down in each treatment tank (31, 32, 33), and further comprising a settling tank (34) as a final treatment step. The air supply conduit in each treatment tank (31, 32, 33) is prov...

Multi-step biological sewage treatment plant comprising at least two treatment or aeration tanks (31, 32, 33) having an inlet (35) for sewage, an outlet (38) for treated water and a conduit for air supply (31A, 32A, 33A) down in each treatment tank (31, 32, 33), and further comprising a settling tank (34) as a final treatment step. The air supply conduit in each treatment tank (31, 32, 33) is prov...

A method and a system for enriching the oxygen content of a body of water having a relatively low oxygen content are disclosed. The method contemplates providing, in a pipeline communicating with the body of water, a pressurized, flowing aqueous liquid stream that is at a pressure greater than ambient and supersaturated with respective to the dissolved oxygen concentration thereof. The liquid stre...

Multi-step biological sewage treatment plant comprising at least two treatment or aeration tanks (31, 32, 33) having an inlet (35) for sewage, an outlet (38) for treated water and a conduit for air supply (31A, 32A, 33A) down in each treatment tank (31, 32, 33), and further comprising a settling tank (34) as a final treatment step. The air supply conduit in each treatment tank (31, 32, 33) is prov...

Continuous production of a panel, partic. a mineral wool insulation panel; covered or at least two adjacent faces from a continuous band consists of the following operations all carried out at the same line speed or the moving band: (a) Sticking the covering (2) on a first face of the band; (b) Maintaining the covering in position until the bonding is complete; (c) progressively folding the coatin...

PURPOSE:To execute a command without determining the inputting order of the command and a parameter by storing the inputted command and the inputted parameter separately, and referring to a table in which the executable combination of the command and the parameter is registered, and executing executable command processing. CONSTITUTION:When data is inputted, it is discriminated whether it is the c...

PURPOSE:To simplify the capacity evaluation system of a processing device, and simultaneously, to realize false terminal equipment to make the operation of each terminal equipment useless by re-writing state information for the terminal equipment based on the transmission data and the control information. CONSTITUTION:The false terminal equipment is constituted of eight pieces of input/output port...