A method of warning of the onset of pipe sticking in a rotary drilling operation using a drill string comprising: (a) monitoring the pressure of a drilling fluid being pumped through the drill string during drilling over predetermined periods of time to obtain series of pressure measurements; (b) monitoring the torque required to rotate the drill string during said periods to obtain series of torq...

A method of accessing water from an aquifer which underlies an impervious stratum without contamination of the aquifer by polluted water from above the stratum by drilling a bore hole to the aquifer; comprises the steps of (a) drilling a first bore hole into, but not through the impervious stratum and a second bore hole of smaller diameter to the aquifer; (b) inserting therein a protective tube ...

A vehicle with an internal combustion engine having fuel injection under the control of an engine management system 77 responsive to signals 84, 86, 88 indicative of the current value of one or more vehicle/engine operating parameters. One or more sensors are provided for sensing operating parameters and a transmission controller 48 controls a clutch and optionally the selection of the operative r...

An ostomy filter for colostomy and ileostomy bags is gas-permeable to allow venting, and liquid-impermeable to prevent leakage. It includes a hydrogen sulphide adsorbent to remove smells. The filter comprises 9 to 50 % by weight of particles of unsintered granular polytetrafluoroethylene (PTFE), 30 to 82 % by weight of particles of comminuted sintered expanded porous PTFE, and 9 to 30 % by weight ...

Extraction of polyamic acid-polyimide gel in bipolymerized polyimide manufacturing process with a solvent containing an extraction-enhancing agent, which is a pyridine, picoline, or quinoline, leads to a polyimide film having increased molecular weight. Polyimides are valuable materials used in fabricating articles which must withstand high temperatures, especially in aerospace applications, and i...

A method of water purification provides for introducing into the water a sorbent-suspension obtained by electroerosive dispersion of ferrous metals in the water and containing no more than 3 % of magnetite, mixing and subsequent separation of the solid phase. The suspension is fed into the water at a quantity of 3 to 120 g of dry substance for 1 g of impurities. Mixing of the suspension with the w...

A spiral-wound pervaporation module, designed to achieve optimum permeate flow throughput. The module is of conventional design and construction, in that it incorporates membrane envelopes, within and between which are channels through which the feed and permeate streams flow. The feed and permeate channels are created by spacers on the feed and permeate sides of the membrane layers. The module is...

The present invention is directed to foams produced from sulfone polymers and mixtures of sulfone polymers with various non-sulfone polymers. These foams are produced using aqueous blowing agents comprising water as the only blowing agent, or mixtures of water with another blowing agent material.

A method of decontaminating waste contaminated polystyrene involves dissolving the contaminated product in liquid styrene monomer and recovering the contaminant-free solution.

Es wird ein thermoplastisches Sinterpulver zur Herstellung genarbter Sinterfolien beschrieben, wobei das Pulver aus ausschließlich linearen, aliphatischen Komponenten besteht. Die Polyolkomponente setzt sich zusammen aus 60 bis 80 Gewichtsteilen Polycarbonatdiol mit einem MG von 2000 und einer OH-Zahl von 56 auf Basis Adipinsäure, Hexandiol und Neopentylglykol mit einem MG 2000 und einer OH-Zahl v...

Die Erfindung betrifft eine trockene, tensidfreie Einkomponenten-Alkalisilikat-Zementzusammensetzung, die als Härter kondensiertes Aluminiumphosphat und mindestens eine Verbindung aus der Gruppe, bestehend aus den Ortho- und Pyrophosphaten von Mangan, Zink, Cobalt, Eisen (III) und Chrom (III) enthält und außerdem die üblichen Bestandteile abgerundeten Quarzsand, Ton, Kieselgur, Mineralöl und feste...

This is to present a facsimile apparatus (1) and its maintenance charge control apparatus (3) capable of easily controlling and settling the maintenance charge of the apparatus. Corresponding to the transmission request instruction signal transmitted from the control apparatus (3), the facsimile apparatus (1) transmits the counting of the sheet counter (19) to the control apparatus (3). The contro...

Vorrichtung zum Herstellen von Mischungen aus einem Propylencopolymerisat a) und einem weiteren Polyolefin b), enthaltend mindestens zwei hintereinander angeordnete Reaktoren und eine mit dem letzten Reaktor verbundene Einrichtung zur Aufnahme und Vermischung des aus dem letzten Reaktor erhaltenen Propylencopolymerisats a) mit dem Polyolefin b). Mit Hilfe dieser Vorrichtung sowie des ebenfalls erf...

An optical information reproducing apparatus of the invention includes a light emitting and receiving unit and an optical system. The optical system converges light from the light emitting and receiving unit on a recording medium and converges the light after reflected by the recording medium. The light emitting and receiving unit includes: a semiconductor laser device disposed an a substrate for ...

True spherical fine particles of a water soluble polymer or a crosslinked product thereof, and a method for their production are disclosed. The method comprises spray drying an aqueous solution of a mixture of a water-soluble polymer and an additive such as a polyhydric alcohol or an oligosaccharide. The removal of the additive may be made only by crosslinking or washing the particles.

A method of forming a laminated piezoelectric structure is disclosed wherein a plurality of polarized piezoelectric films of vinylidene fluoride and trifluoroethylene are solvent welded together. The solvent welding solution comprises a copolymer of vinylidene fluoride and trifluoroethylene and a suitable solvent. The transducers produced from such a laminated structure are also disclosed.

Containers with low permeability to hydrocarbon vapors, and in particular to fuel vapors, having at least one surface coated with a p-xylylene polymer and/or its derivatives. The containers find use in the fuel industry and, in particular, in the automobile industry for the production of fuel tanks for cars, commercial vehicles, and motorcycles.

Disclosed is a coated article (201) having a substrate (221) with an adherent, abrasion resistant alkene-silane plasma reaction product coating (231). In a preferred exemplification the coating is substantially transparent to visible light and partially absorbing to ultraviolet light. The coating is a plasma assisted chemical vapor deposition deposited coating.

A first digital TV signal of a standard format or a second digital TV signal of a bandwidth larger than that of the first signal are recorded with a digital video tape recorder. For processing the second signal, two consecutive frames are calculated to produce the sum of the pixel values of each pixel of the two frames and also the differences between their values. Either the resultant interframe ...

A block of picture elements is DCT transformed and coded to produce a corresponding data block of variable length codewords having an average length. The data blocks are apportioned among fixed length transport blocks as needed to produce full transport blocks. The transport blocks include a direct (DC) component and alternating components at prescribed locations, as well as an address information...