A watchdog timer circuit (10) includes a cyclic counter (18) with an overflow signal that functions as a reset pulse to a microprocessor (12). The timer circuit (10) includes a feature for selectivity supplanting the overflow signal to enable in situ programming of the microprocessor (12).

An independent watchdog circuit operating with a microcontroller includes a non-volatile memory element and a counter. The non-volatile memory element stores a counting value therein. The counter is connected to the non-volatile memory element and times an operation of the microcontroller, the length of the timing being based on the counting value stored in the non-volatile memory element. The cir...

The present invention relates to the use of hollow microspheres filled with a hydrocarbon, to introduce uniform cell geometries in syntactic foams having a bimodal cell structure. The rigid foam product includes from 20 to 80 percent by weight of the hollow microspheres, the microspheres having average diameters ranging from 80 to 200 microns. The microspheres are encapsulated from 80 to 20 percen...

A novel polyester polymer containing 9,9-bis[4-(2-hydroxyethoxy)phenyl]fluorene as the diol component. It has good transparency and thermal resistance, small optical anisotropy and excellent moldability, dimensional stability and chemical resistance, thus being useful in the industrial fields including optical material, fiber, film and sheet.

The present invention relates to DNA sequences that encode for the branched-chain alpha-ketoacid dehydrogenase complex of an organism belonging to the genus Streptomyces and to polypeptides produced by the expression of such sequences. It also relates to methods of enhancing the production of natural avermectin and of producing avermectin through fermentation.

Disclosed are branched polyester compositions having an I.V. of at least about 0.7 dl/g and a melt viscosity sufficiently high to permit foaming during extrusion or molding operations. These branched polyesters are readily foamable with a wide range of foaming agents to provide low density shaped articles, films, and sheets. The branched polyesters comprise about 80 to about 99.9 wt % of a polyest...

A process for the production of rigid polyurethane foams is provided which comprises the reaction of (1) an organic polyisocyanate; (2) an isocyanate-reactive composition containing a plurality of isocyanate-reactive groups; and (3) a blowing agent comprising isopentane and n-pentane in a ratio of 99:1 to more than 80:20 parts by weight under foam foaming conditions.

Stretched, mono- or biaxially drawn film produced from linear alternating terpolymers of carbon monoxide, ethylene and at least one ethylenically unsaturated hydrocarbon, demonstrates good properties of strength and stiffness, even at low draw ratios.

PURPOSE:To improve the strength of concrete by compounding an aggregate consisting essentially of a gerenite compound to a specific cement conssisting essentially of plural compounds with a specific formula and gypsum. CONSTITUTION:A special cement is prepared by mixing 100pts.wt. of matrix powders containing 90-20 pts.wt. of 12CaO.7aL2O3 and 10-100 pts.wt. of at least one kind of gypsm dihyrate o...

Coating compositions based on ethylene vinyl acetate polymers have improved compatability with solvents (especially with aliphatic hydrocarbon solvents) hydrocarbon oils, and mineral waxes by blending the EVA with a fatty acid and heating at or above the melting point of the EVA. Furthermore the resultant blends are much more easily emulsified in the presence of cations that blends which have not ...

PURPOSE:To obtain an oxide superconductor exhibiting superconducting phenomenon at a temperature higher than liquid nitrogen temperature and having excellent stability to water by having specific composition of rare earth-alkaline earth metal-Cu-O system and having A3B2O6 crystal structure containing two-dimensional plane. CONSTITUTION:A complex oxide having composition expressed by the formula RE...

Measurement-while-Drilling apparatus, for obtaining information about a formation, uses sensors (Fig 3C, 301) on substantially non-rotating pads 264 attached to a rotating housing 256 that is part of the drilling assembly. The pads make contact with the formation. The sensors may be density, NMR, resistivity, sonic or electromagnetic sensors. The NMR sensors may use a static magnetic field, that c...

A method and a system for operating a revolving credit system utilizing a table of tiered, variable interest rates in which one of the interest rates is applied as a finance charge to a remaining outstanding balance of an account depending upon the percentage that payments made during a billing cycle comprise of an account parameter, such as the outstanding balance, a highest balance or a beginnin...

In a publish/subscribe data processing broker network having a plurality of broker data processing apparatuses each of which has an input for receiving published messages directly from a publisher application and/or receiving subscription data from a subscriber application, a first broker data processing apparatus has: a unit for receiving a data message published on a first topic by a first publi...

A method/system for controlling downshifting in an automated mechanical transmission system (10) utilized on a vehicle having a manually controlled engine brake (46) and foot brake (44) system. The engine speed at which downshifts are commanded (ESD/S) is modified as a function of sensed operation of the engine brake (EB?) and foot brake (FB) systems.

The present invention is an improved method and apparatus for testing and monitoring wellbore operations. The invention is (1) a data acquisition device capable of monitoring, recording wellbore and/or reservoir characteristics while capable of fluid flow control; and (2) a method of monitoring and/or recording at least one downhole characteristic during testing, completion and/or maintenance of a...

An optical pickup comprises a holographic element 150 including a transparent substrate 154 carrying multiple thin layers 155 formed by alternately stacking first and second kinds of thin layer having respective first and second reflective indices. A reflecting layer 158 is applied to the substrate and layers. The element 150 gives rise to different light paths for differently polarized light comp...

The present invention relates to a carbon fiber prepreg. The carbon fiber prepreg of the present invention is characterized in that a carbon fiber bundle comprising a plurality of continuous carbon filaments and having a hook drop value of 10 cm or more as the degree of fiber entanglement is impregnated with a base resin mainly composed of a thermosetting resin, and that particles of 150 mu m or ...

Novel methods of making elastomer compositions irclude the use of certain modifying agents and mechanical working prior to incorporation of a vulcanization system in a first or other early stage of a multi-stage process particulate filler, such as carbon black, and sulfur cross-linking agent are substantially dispersed into sulfur crosslinkable hydrocarbon elastomer. The particulate filler and sul...

The invention relates to a process and a device for preparing exposed typesetting films for phototypesetting. In said process, a typesetting film which has a transparent plastic base sheet and at least one surface layer applied thereto is scanned with a laser beam and exposed with respect to picture elements while being guided by the typesetting information. To prepare a typesetting films in a sim...