119results about How to "Maintain permeability" patented technology

The present invention relates to a method for the treatment, amelioration and / or prophylaxis of a neurological condition, in particular neurodegenerative disorders which comprises the administration of an effective amount of a compound of formula (I): to a subject in need thereof. The present invention also relates to a compound of formula (II) and processes for its preparation.

The present invention describes a method for the treatment of a neurological condition in a subject which comprises administering to a subject in need thereof a therapeutically effect amount of a compound of the formulaor pharmaceutically acceptable salts, hydrates, or solvates thereof.

A method and apparatus for the inspection of electrically conductive components is described. The described apparatus comprises a sensor module having a magnetiser unit suitable for generating a variable DC magnetic field within the test component and an eddy current probe. The variable DC magnetic field and eddy current probe are configured to perform a partial saturation eddy current test upon the test component. The eddy current probe further comprises a magnetic field sensor that provides a means for measuring the permeability within the test component. Employing the magnetic field sensor provides apparatus that is more accurate and flexible in its modes of operation since such sensors provide a means for the actual permeability of a material being tested to be measured. The described methods and apparatus find particular application in the inspection of tubular components used in the oil and gas exploration and production industries.

The invention discloses a series of skin care products with oat protein peptide as a basic component and a preparation method thereof, which belongs to the field of health care. The series of the skin care products overcome the defects of side effects and poor absorption of the conventional skin care products. The series of the skin care products comprise oat protein peptide smoothing toner, oat protein peptide essence, oat protein peptide day cream and oat protein peptide night cream. The raw materials of the series of the skin care products comprise purified water, propylene glycol, oat protein peptide, hyaluronic acid, natural squalane, marine polysaccharide, water-soluble vitamin E, water-soluble jojoba oil, water-soluble lanolin, methyl-p-hydroxy benzoate, propyl p-hydroxybenzoate, hydroxyethyl cellulose and fresh hundred-flower essence. The preparation method comprises the step of preparing the series of the skin care product in the mixing process through emulsification or partial emulsification and partial hydration according to the different products. The series of the skin care product have the following advantages that: oat active peptide can significantly increase the content of collagen in a mechanocyte and inhibit and prevent skin aging, and the cosmetic effect of the series of the skin care products is obviously higher than that of synthetic peptides. The naturalhyaluronic acid in the skin care products can obviously increase the permeability of an arterial wall, and improve the adaptability of skin to external environmental changes.

A gas sensor includes a gas detection chamber into which a detection gas is introduced, a detecting element and a compensating element each disposed in the gas detection chamber, a detection device which detects the concentration of a detection target gas contained in the detection gas, in accordance with a difference in electrical resistance values between the detecting element and the compensating element, and a dehumidifying element which is provided in the gas detection chamber, and reversibly absorbs water contained in the detection gas and drains off the water absorbed in the dehumidifying element.

The invention belongs to the petroleum exploitation field and provides a well washing device which can seal the annular space between the oil pipe and the casing and avoid the well washing water from polluting the oil layer. The sealing well washing device comprises an eccentric well washing valve and a leather cup packer; the leather cup packer is arranged on the oil pipe under the eccentric well washing valve; the leather cup packer divides the annular casing space between the oil and the casing into an upper part and a lower part; the eccentric well washing valve is provided with a pressure switch device used for controlling the conduction and closing of the annular casing space and the space inside the oil pipe. The well washing device avoids the well washing water from contacting with the oil layer while satisfying the well washing requirement of the pumping unit production well, maintains the porosity and permeability of the production layer without affecting the yield of the crude oil. The technical proposal provided by the invention is adopted so that the water consumption is less. Under the same condition, if the general well washing method is adopted, the water consumption is 23 cubic meters in volume and the time is 4-5 hours. If the technical proposal of the well washing device is adopted, the water consumption is only 5 cubic meters in volume and the time is 90 minutes.

An improved system and method is disclosed for expanding a fluid permeable tubular downhole in an open hole completion. A high quality borehole is first drilled using a bottomhole assembly having a long gauge bit and a short bit-to-bend ratio. A fluid-permeable tubular is then inserted into an open-hole portion of the wellbore and preferably expanded in place. The expandable tubular may include an external filtering medium. Hydrocarbons may pass from the formation through the expanded fluid permeable tubular and into the borehole, to be recovered.

The invention provides a method for preparing a carbon nanotube film by removing residual dispersant by alkali treatment, which is characterized by comprises the following steps: after forming a carbon nanotube film on a substrate by the filtering method, soaking the carbon nanotube film in a sodium hydroxide solution for a period of time so that dispersant is chemically degraded, soaking the carbon nanotube film with deionized water and flushing the soaked carbon nanotube film to remove the dispersant scraps after degrading. The alkali treatment for removing the dispersant has the characteristic of mild conditions, thus having no damage the carbon nanotube film and the flexible substrate; the alkali treatment can effectively remove the dispersant, greatly enhance the conductivity of the film, and easily and efficiently manufacture flexible low-resistance high-transmittance single-wall carbon nanotube films on the premise of keeping the flexibility and permeability of the film. In addition, the alkali treatment for removing the dispersant can not introduce impurities, so that the treated film has high stability.

In an apparatus for the production of a nonwoven web, structure, or article using a nonwovens process in combination with a transfer belt which includes conductive material so as to dissipate static electric charge whilst maintaining a desired air permeability;

The invention discloses a high-yield and high-survival rate citrus planting method and belongs to the technical field of agricultural planting. The planting method includes the procedures of citrus seedling selection, soil preparation, seedling planting, topdressing after planting, treatment after harvesting of citrus trees and the like. In the procedures, self-made root-inducing sterilizing solution is adopted to treat the root systems of seedlings, a soil improvement agent is used for improving the soil environment of planting of the citrus trees, a planting fertilizer serves as a base fertilizer of the citrus trees, and a soil conditioner is adopted to improve the soil properties after planting. The planting method provided by the invention is scientific, reasonable, simple and easy to implement, and management is convenient; fertilizers used during planting are rich in nutrition, no chemical additive exists, pollution to the soil and the citrus trees is avoided, and safety and reliability are achieved; and the survival rate of the citrus trees during planting is high, the fruit output is high, fruit bearing is stable, and the social benefits, economic benefits and ecological benefits are remarkable.

A gas sensor includes a gas detection chamber into which a detection gas is introduced, a detecting element and a compensating element each disposed in the gas detection chamber, a detection device which detects the concentration of a detection target gas contained in the detection gas, in accordance with a difference in electrical resistance values between the detecting element and the compensating element, and a dehumidifying element which is provided in the gas detection chamber, and reversibly absorbs water contained in the detection gas and drains off the water absorbed in the dehumidifying element.

A method and apparatus for the inspection of electrically conductive components is described. The described apparatus comprises a sensor module having a magnetiser unit suitable for generating a variable DC magnetic field within the test component and an eddy current probe. The variable DC magnetic field and eddy current probe are configured to perform a partial saturation eddy current test upon the test component. The eddy current probe further comprises a magnetic field sensor that provides a means for measuring the permeability within the test component. Employing the magnetic field sensor provides apparatus that is more accurate and flexible in its modes of operation since such sensors provide a means for the actual permeability of a material being tested to be measured. The described methods and apparatus find particular application in the inspection of tubular components used in the oil and gas exploration and production industries.