control agent

control agent

[kən′trōl ‚ā·jənt]
(chemical engineering)
In process automatic-control work, material or energy within a process system of which the manipulated (controlled) variable is a condition or characteristic.
References in periodicals archive ?
The latest biological control agent is a leaf eating caterpillar known as Eueupithecia cisplatensis, or UU for short, joining an ever increasing armoury of insects, mites and fungus.
Different field and laboratory experiments reveal that many EPNs species, for example Heterorhabditis bacteriophora have the mutualistic association with other bio control agent like Beauveria bassiana.
Sarwar is doing his PhD thesis entitled isolation and identification of causative agent of potato common scab and characterization of effective antagonistic bacterial strain as biological control agent under the supervision of Associate Professor Dr Zakia Latif.
Native predators and parasitoids within the introduced range of a biological control agent often find and attack the agent, a novel resource (Hill & Hulley 1995; Paynter et al.
8,975,220 B1; Clorox has patented a composition that consists of a homopolymer of diallyl dimethyl ammonium chloride; an oxidant selected from the group consisting of a hypohalous acid, a hypohalite, and mixtures thereof; water; and optionally, an adjuvant selected from the group consisting of a fragrance, a hydrotrope, a colorant, a dye, a buffer, a chelating agent, an electrolyte, an antimicrobial agent, a solvent, a stain and soil repellent, a lubricant, an odor control agent, a perfume, a fragrance release agent, an acid, a base, a solubilizing material, a stabilizer, an anti-corrosion agent, a thickener, a defoamer, a cloud-point modifier, a preservative, a water immiscible solvent, an enzyme, and mixtures thereof.
This control agent typically coats the surface and controls microphase orientation by interaction with the solidifying block copolymer.
The reaction is carried out by combining a reactant stream of the titanium halide and a reactant stream of the oxygen-containing gas in a reaction zone of a vapor phase oxidation reactor at a temperature of at least 700 [degrees] C; introducing a particle size control agent into the reaction zone to control the particle size of the titanium dioxide, the particle size control agent including an ionizing agent and fumed silica; and separating the titanium dioxide particles from the gaseous reaction products.
Patented is an absorbent article, comprised of a top cover and a material layer disposed beneath the top cover, an odor control agent deposited in a visible pattern between the top cover and the material layer of the article.
Root-eating insects could soon be eating themselves sick--if their favorite food has been treated with a fungal control agent.
Selenium application, for example, is sometimes used as a control agent, but this research suggests that an insufficient dose might be benefiting the very insects it's supposed to control.
While starch, as well as an appropriate foam control agent, are typically found in a size press solution, new high performance programs can make the difference in delivering a sheet that performs as expected.
The individual riot control agent disperser has been changed from Federal Supply Class V (ammunition) to Class II (individual equipment).

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