30 results about "Elevated ph" patented technology

The invention relates to copolymers effective as slump retention agents for hydraulic compositions such as cement, mortar and concrete. The copolymers are formed by reacting monomers A, B and C, wherein monomer A is a compound of formula I, monomer B is a compound of formula II, and monomer C is a compound of formula III or IV as shown herein. The copolymers may be used alone or in combination with a water reducing agent or slump retaining agent, e.g. a superplasticizer such as PNS or PMS or a low range water reducer such as lignosulfonate. The copolymer includes a group that is hydrolyzable at elevated pH (e.g. around pH 12) typically present in hydraulic compositions, so that the group hydrolyzes when present in such compositions and forms a charged group that provides extended slump retention properties without introducing undesirable air-entraining characteristics.

A synergistic composition and method is provided for controlling odor from waste products. The composition comprises a combination of magnesium hydroxide and a sulfide-consuming compound. The method includes adding a sufficient amount of the composition to a waste stream to provide sufficient sulfide-consuming compound to effect immediate removal of sulfide. The composition incorporates a pH elevating and buffering compound, which both increases and buffers the pH. The increased pH serves to reduce both the volatile sulfide species and the volatile fatty acid (VFAs) species. The elevated pH also promotes the growth of naturally occurring bacteria which metabolize the sulfide to an innocuous form. Finally, addition of the composition drives the pH into a range where the growth of sulfide producing bacteria is inhibited. The mixture has surprisingly been found to be synergistic with respect to both control of chemical species that produce odors and corrosion of metals commonly found in sludge dewatering equipment.

Provided is a method of treating or preventing age-related macular degeneration (AMD) in a patient subject to, or symptomatic of the disease, wherein the method comprises restoring normal lysosomal pH (pH_L), or acidifying an abnormally elevated pH_L, thus decreasing or preventing a damaging accumulation of lipofuscin or waste products in the retinal pigment epithelium (RPE) cells of the eye of the patient. Further, this method is achieved by elevating cAMP by administering or stimulating receptors coupled to a Gs protein in an amount sufficient to decrease the elevated pH_L or restore acidity of said lysosomes, specifically by administering or stimulating receptors comprising D1-like dopamine receptors by the use of D1-like dopamine receptor agonists. Methods for selecting and quantifying the effectiveness of drugs to restore pH_L and determine outer segment clearance rates is also provided using a high through-put screening protocol.

An economical method for recovering nitrogen from liquid waste using autotrophic organisms and minimal energy inputs and without chemical additives. Solids are separated from anaerobically digested liquid waste. The resulting translucent liquid is introduced to a culture of autotrophic microorganisms in the presence of natural or artificial light, thereby accumulating biomass and producing a liquid effluent with elevated pH. The elevated-pH, liquid effluent is heated and stripped of ammonia, thereby producing a water vapor and stripped ammonia gas stream. The water vapor ammonia gas stream is condensed to form a liquid/ammonia condensate. The autotrophic microorganisms are advantageously cultivated in a photobioreactor comprising a plurality of axially spaced-apart, growth plates mounted for rotation to a shaft. The pH of the culture is adjustable within a preferred range of 8.0 to 10.5 by adjusting the light intensity and rotational speed.

An economical method for recovering phosphate or phosphate and nitrogen from liquid streams. A liquid containing phosphate is introduced into a culture of autotrophic microorganisms in the presence of natural or artificial light, thereby producing a liquid effluent with elevated pH and reduced alkalinity. The alkalinity is reduced through the consumption of bicarbonate/carbonate by the autotrophic microorganisms. The effluent is then chemically treated with low-cost chemicals to provide Ca⁺⁺ or Mg⁺⁺ ions necessary to form a phosphate precipitate such as calcium phosphate or magnesium-ammonium-phosphate (MAP). The autotrophic microorganisms can be cultivated in ponds, lagoons, or photobioreactors. The pH of the culture is adjustable within a preferred range of 7.5 to 10.5 by adjusting the photobioreactor operation. The process includes an economical flotation separator for solid, liquid, gas separation and a means of concentrating ammonia nitrogen that may also be removed during the process of phosphate reclamation.

A method for increasing the stability and uniformity of a PEGylated G-CSF polypeptide having at least one PEG moiety attached to the epsilon amino group of a lysine residue or the N-terminal amino group and at least one PEG moiety attached to a hydroxyl group, comprising subjecting the polypeptide to an elevated pH of above 8.0 for a period of time suitable to remove PEG moieties attached to a hydroxyl group, and reducing the pH to about 8.0 or lower; as well as PEGylated G-CSF polypeptides and compositions produced according to the method and methods for increasing neutrophil levels in a patient using the PEGylated G-CSF polypeptides and compositions.

Acidic milk based beverage products which do not precipitate over time and are physically stable, and a process for preparing these products, are disclosed. These products contain from about 0.5% to 5.0% milk proteins and 0.1 to 2.0% of a food stabilizer and a food acid sufficient to lower the pH below 4.5. The first step of the process involves mixing milk proteins with a food grade weak base to raise the pH above 7.0. Food grade stabilizers are added to the elevated pH mixture of milk proteins and base under low shear conditions. Other ingredients are then added to provide the desired sweetness, flavor, color and microbiological stability. This mixture is homogenized before acidification. A chilled food grade acid is then added at a temperature below 30° C. under low to moderate shear conditions.

A pharmaceutical composition comprising proton pump inhibitors and prebiotics is proposed for the treatment of gastric and duodenal ulcer, this allowing effective ulcer treatment and eradication of H. pylori from the gastric and duodenal mucosa to be carried out without using wide-spectrum antibiotics. The comprehensive treatment of ulcer disease associated with a helicobaterial infection using a pharmaceutical composition of a PPI and a prebiotic makes it possible, in conditions of an elevated pH of the stomach contents, actively to stimulate the growth of lactobacilli in the upper sections of the gastrointestinal tract, including the duodenum, and substantially to increase the titre of lactobacilli, which are antagonists of H. pylori, which greatly improves the effectiveness of the ulcer treatment.; The high clinical effectiveness and safety resulting from the synergistic action of the proton pump inhibitor and the prebiotic in the upper sections of the gastrointestinal tract, the absence of side effects and recurrences, and also the level of compliance to the combined treatment provided by the claimed pharmaceutical composition indicate that the proposed formulation is a promising new means for the treatment of gastric and duodenal ulcer. Use of the claimed composition dramatically reduces the number of recurrences of the illness.

A method of fabricating a working electrode adapted for reduction of carbon dioxide comprises layering a gold film (Au) over a shrinkable polymer to create a layered structure, heating the layered structure to cause shrinking, for instance, at a temperature of about 130° C., and removing the shrinkable polymer layer. The heating creates a contracted, wrinkled Au film surface owing to a difference in thermal coefficient between the Au film and the underlaying polymer prior to removal of the polymer, and the wrinkled film contains c-shaped wrinkles containing confined spaces in which a local elevated pH level is attained.