An exclusion controller which allows an information processing unit to acquire a contended resource to the exclusion of the other information processing units includes a plurality of non-prioritized information processing units mutually exclusively acquiring a non-prioritized exclusion right, which indicates a candidate for acquiring the contended resource, by a first process. The exclusion controller further includes a prioritized information processing unit acquiring the contended resource by ...

An exclusion circuit for use in a key telephone providing an exclusion release feature. Key telephones are excluded or prevented from accessing a busy line by the exclusion circuit. The exclusion release feature, in a key telephone connected to a telephone line, is operated in response to operation of an exclusion release key or partial operation of a hold key, to allow an associated excluded key telephone to connect to a busy telephone line.

A static dirt exclusion element is arranged in a unitized housing to contact a rotating exclusion element so as to provide a primary barrier to dust and airborne contaminants. A secondary barrier is provided in the housing in the form of a porous filter element formed of a foam or felted material to further exclude and entrap contaminants.

A relay is included in a subset of a key telephone system to connect the subset to a line selected by the line button of the system when the relay is activated. A control circuit is coupled to the relay and a key system positive ground to control the operation of the relay. The "A" lead of the key telephone system is coupled to the control circuit to disable the control circuit and, hence, the relay when the positive ground is coupled into the subset on the "A" lead and to enable the operation o...

A method is disclosed for selectively reducing the permeability of water producing intervals in a hydrocarbon formation without reducing oil permeability. A soluble oil followed by water is injected into the formation to lower the residual oil saturation. The well is then produced to remove water from any oil zones before injection of an isobutyl-methacrylate solution in acetone. A slug of a non-condensable gas follows the treating solution before the shutting in of the well for up to about one ...

An exclusion seal for being removably mounted in a bearing mount is formed with an annular housing with an internal sealing means having a sealing ring is constructed to prevent a "blow-out" of the seal due to the high lubricant pressure. The annular housing has an annular ring wall and a radially extending wall defining an annular chamber in which is received the annular sealing ring which has an annular sealing surface for sealing engagement with an annular surface on a rotating shaft or on a ...

A process for separating saccharides by exclusion chromatography wherein a feed mixture of saccharides is supplied to a molecular exclusion chromatography zone from which at least three fractions are removed. The first fraction contains the least diffusible saccharides of the mixture which generally are the highest molecular weight components, the second fraction contains predominantly intermediate molecular weight saccharides and the third fraction contains predominantly lower molecular weight ...

Method and apparatus of mutual exclusion for executing protected code in a computer system. If an interrupt occurs during the execution of protected code, then the computer system is reconfigured to exclude interrupts having a lower priority than the current exclusion level and the interrupt is either deferred (if it has a lower priority than the current dessired exclusion level) or serviced (if it has a priority higher than the current desked exclusion level). In some embodiments, for computer ...

A preparation effective for reducing colonization by human enteropathogenic bacteria in poultry is prepared from cultures of mucosa-associated flora obtained from ceca of mature birds and is referred to as mucosal competitive exclusion (MCE). The preparation is especially effective for both Salmonella and Campylobacter spp. Administration of the novel MCE preparation to newly-hatched or hatching birds provides substantial protection against both microorganisms and results in the diminished prese...

A weedless turtle exclusion device which excludes turtles and like sized things from trawl nets and the like, while allowing the desired catch therethrough. A deflector, through which the catch passes en route to the net's tail bag or codend is situated between optional spacer rings in the trawling net and comprises a circular frame angularly affixed to the internal walls of the net's chute. Situated at upstream connection points are parallel deflection bars, running from the upstream connection...