193 results about "Chemical mixtures" patented technology

An apparatus and method is disclosed for an improved absorbent pad and thermal pack for absorbing a liquid discharged from a patient. The absorbent pad and thermal pad comprises an outer sheet made of a liquid impermeable material and an inner sheet of a liquid permeable material. An absorbent sheet is disposed between the inner sheet and the outer sheet. A flexible liquid impermeable container having a chemical mixture which undergoes an thermal reaction upon activation thereof is interposed between the outer and inner sheets to enable the thermal source to be applied to the patient and to enable any liquid from the patient to permeate through the inner sheet to be absorbed by the absorbent sheet. The inner sheet of a liquid permeable material provides a moderate insulation barrier whereas the absorbent pad provides a substantial insulation barrier for directing the thermal source to the patient.

The invention provides methods for aligning and filtering chromatograms representative of complex mixture samples. In one embodiment, the invention includes identifying and matching related peaks to determine a temporal offset, and applying a nonlinear temporal shift to account for the offset. In other embodiments, the invention provides methods for smoothing chromatographic data by application of an autoregressive filter to provide improved signal-to-noise ratio, data compression, and resolution. The alignment and filtering methods may be performed separately or combined. In certain embodiments, the invention provides improved chromatographic pattern recognition capability and improved classification of samples of complex chemical and/or biological mixtures.

Included are methods for modeling at least one physical property of a mixture of at least two chemical species. One or more chemical species of the mixture are approximated or represented by at least one conceptual segment. The conceptual segments are then used to compute at least one physical property of the mixture. An analysis of the computed physical properties forms a model of at least one physical property of the mixture. Also included are computer program products and computer systems for implementing the modeling methods.

A pre-treatment chemical mixture of hydrofluoric acid or ammonium bifluoride and isopropyl alcohol for glass adhesive applications. In one particular a pretreatment for the repair of stone breaks and long cracks in windshields. The pretreatment improves the repair by removing, through evaporation of the solvent, isopropyl alcohol, the hydrophobic coating that has been applied to the windshield when it was manufactured and simultaneously etching the sides of the stone break or long crack in a way that allows better adhesion by the adhesive repair resin while not leaving any trace of the etching after the repair is complete, thereby keeping the windshield or other glass, clear.

A system for applying a liquid chemical mixture to an area. The system comprises: a liquid conduit for supplying a flow of pressurized liquid to the system, which pressurized liquid enters the conduit through an inlet valve; a container for a liquid chemical composition, which container is in fluid communication with the conduit so that the composition contacts the pressurized liquid in the conduit to form the mixture; a reservoir in fluid communication with the conduit, which reservoir is configured to receive and store the mixture, at least one spray nozzle, through which spray nozzle, the mixture is dispensed to the area; a pump in fluid communication with the reservoir and with the spray nozzle, which pump forces the mixture through the spray nozzle; and an automated controller which is configured to at least (i) control operation of the inlet valve and (ii) control operation of the pump. Methods for dispensing a liquid chemical mixture to an area are also described.

The present invention relates to a method and apparatus for predicting the non-color properties of a chemical mixture, such as an automotive paint, using an artificial neural network. The neural network includes an input layer having nodes for receiving input data related to the chemical components of the mixture and environmental and process conditions that can affect the properties of the mixture. An output layer having nodes generate output data which predict the properties of the chemical mixture as a result of variation of the input data. A hidden layer having nodes is connected to the nodes in the input and output layers. Weighted connections connect the nodes of the input, hidden and output layers and threshold weights are applied to the hidden and output layer nodes. The connection and threshold weights have values to calculate the relationship between input data and output data. The data to the input layer and the data to the output layer are interrelated through the neural network's nonlinear relationship. When implemented, accurate predictions of the final properties of the mixture can be obtained. The invention is especially useful in relating automotive paint formulation variables (e.g., paint ingredient amounts and application process conditions) to physical properties (e.g., viscosity, sag), appearance (e.g., hiding, gloss, distinctness of image) or other measured properties enabling comparison of formula properties to target values or tolerances without expensive experimental work.

A method and chemical composition for selectively etching unwanted metal deposits on a surface of a wafer. In one aspect, a method of processing a substrate is provided which includes providing a substrate to an edge bead removal system, and applying a chemical etchant comprising citric acid and an oxidizing agent to the substrate. In one aspect, a chemical composition of citric acid and hydrogen peroxide is provided which is a relatively weak acid having a pH greater than about 1.0.

An Improved Self-Contained Pyrethrum-Based Insect Repelling and Killing Apparatus for the purpose of dispensing a chemical agent whose function is to detract or alternatively attract and destroy, insects, in particular, flying insects, which serve to detract from human or canine enjoyment of the outdoors, especially in residential surroundings. Similarly, animals such horses and cows and other domesticated livestock are affected, often with deadly consequences, by infestations of these insects. The apparatus consists of a chemical source tank, a means of connecting a fluid source, usually water, a tank for chemical mixing and a pump means for mixing and creating pressure. All chemical tanks and mixing vessels are located inside of an encasement which is protected from outside intrusion. Mixing tank is of such size to eliminate any chance of chemical mixture separation and chemical mixture is agitated prior to each dispensing cycle. Fluid is disbursed under pressure through a series of narrow apertures fluid dispensing devices, interconnected to the apparatus through a flexible plastic delivery conduit. The Apparatus functions are controlled through the use of an attached electronic interface whose purpose is to effectively meter, sense and control apparatus functions. Preferred agent used is pyrethrum based, naturally occurring or synthesized, which possesses an antagonistic effect toward targeted pests but apparatus is designed to be adaptable to a wide range of natural or synthesized chemicals.

Relative quantitative information about components of chemical or biological samples can be obtained from mass spectra by normalizing the spectra to yield peak intensity values that accurately reflect concentrations of the responsible species. A normalization factor is computed from peak intensities of those inherent components whose concentration remains constant across a series of samples. Relative concentrations of a component occurring in different samples can be estimated from the normalized peak intensities. Unlike conventional methods, internal standards or additional reagents are not required. The methods are particularly useful for differential phenotyping in proteomics and metabolomics research, in which molecules varying in concentration across samples are identified. These identified species may serve as biological markers for disease or response to therapy.

A process for high-flux screening, capturing and separation of target moleculae from complex substance (Chinese medicine or chemical mixer) includes preparing a ds DNA microarray chip to make its probe have a binding sites of dsDNA bindin, measuring the affinity of the sites, creating the standard affinity parameter system, mixing the microarray chip with said complex substance, reacting, detecting the affinity variation, screening the varied targets, linking them to the surface of chromatographic column, filling the complex substance in it, capturing the effective moleculae by probes, eluting and collecting the effective moleculae.

The invention discloses a specific tea-oil tree compound fertilizer containing tung oil. The compound fertilizer is prepared from tung oil, tung oil cake, human urine, pig manure, cow dung, chicken manure, cornstalk, urea, diammonium phosphate, potassium chloride and humic acid in a certain weight ratio. The preparation method comprises the following steps: putting tung oil cake and the human urine into tung oil to prepare an oil-urine compound fertilizer, fermenting a humic acid organic fertilizer inside a clay frame, blending urea, diammonium phosphate and potassium chloride into a chemical mixture fertilizer, subsequently uniformly mixing the three fertilizers, and controlling the water content to be less than 14%, thereby obtaining a finished product. The invention aims at customizing a series of specific fertilizers containing tung oil that organic fertilizers and chemical fertilizers are combined, three elements, that is, nitrogen, phosphorus and potassium are combined, secondary elements and microelements are complete, rich activated organic substances are provided and the fertilization period and the fertilizers are determined according to the growth characteristics of tea-oil trees. The compound fertilizer is wide in raw material resource, scientific and reasonable in proportion and process, saved in the labor, lowered in the production cost by more than 30% and applicable to popularization.

The present invention relates to solid supports that are used for the storage and further processing of biological materials. The invention is particularly concerned with solid supports which have at least one surface coated with a chemical mixture that enhances the recovery of the biological material from the support. Methods of preparing and using the solid supports are also described.

The invention discloses a bactericidal odor removing agent in the chemical mixture agent field, and is characterized by comprising the components, in percentage by weight: (A) 0.25 to 5% of an organic silicon quaternary ammonium salt; (B) 0.1 to 2% of an organic silicon coupling agent; (C) 0.2 to 2% of a stabilizing agent; and (D) the balance being deionized water. The bactericidal odor removing agent has antibacterial, mildewproof, odor-removing and deodorant effects, has lastingly bacteriostatic effect and widely bacteriostatic range, simultaneously is safe and reliable for any product, and does not pollute the environment. The organic silicon quaternary ammonium salt has bactericidal and bacteriostatic effects, and non-toxic, gentle, soft and smooth properties of the organic silicon quaternary ammonium salt to human bodies are utilized, so the bactericidal odor removing agent is prepared into a spray medicament form, is used for disinfectant and bactericidal treatment of various traumatic infections and skin infections, can have rapidly bactericidal antipruritic effect for the various skin infections, and can kill bacteria and inhibit bacterial activity.