1849 results about "Natural material" patented technology

A disposable downhole tool is disclosed. The tool is suitable for use as a frac tool. The tool includes a housing having an inner wall surface defining a bore. The tool also includes a valve structure disposed within the bore, the valve structure comprising a disposable plug seat, the disposable plug seat comprising a first natural material. The disposable tool may also include a disposable plug in fluid sealing engagement with the seat, the plug comprising a second natural material, the plug and the plug seat comprising a plug valve. The first and second natural materials may include sedimentary rock, such as various forms of limestone, including Carrara marble or Indiana limestone.

PCT No. PCT/CN97/00004 Sec. 371 Date Sep. 17, 1998 Sec. 102(e) Date Sep. 17, 1998 PCT Filed Jan. 20, 1997 PCT Pub. No. WO97/25968 PCT Pub. Date Jul. 24, 1997The invention relates to a tooth-whitening varnish composition, comprising 6-20% of carbamide peroxide, 2-9% of film forming agent and 77-88% of volatile organic solvent, based on the total weight of the composition. The volatile organic solvent is selected from ether, ethylacetate, ethyl alcohol, or acetone. The film forming agent is artificial or natural material selected from cellulose, polyvinyl, butyral, coumarone resin or shellac. The composition can rapidly form films on dry tooth surfaces, and a remarkable tooth-whitening effect can be obtained.

The present invention provides a composite panel for use in construction, and particularly for shingling, which comprises natural fiber and a polymer. Due to its composition and layout the construction panel provides all of the advantages of natural materials and high end roofing materials, particularly an attractive appearance, while at the same time allowing for ease of installation, little or no maintenance requirements, and providing superior impact and fire resistance when compared to other roofing materials. The construction panels can also be installed using conventional equipment and methods similar to the installation of 3-tab asphalt shingles with little or no learning curve.

An implant for repairing pelvic floor disorders, such as urinary incontinence or prolapse, by lifting the prolapsed tissue or organ into a more anatomically correct position is provided. The prosthesis is shaped with a central support section and one or more lateral anchoring sections or arms extending outwardly from the central section. The support section lifts the prolapsed organ to a more anatomically correct position, whereas the anchoring secton(s) are positioned through soft tissue away from the organ being supported to hold the implant in place by allowing tissue ingrowth into the anchoring sections. The implant may be formed of both synthetic and more natural materials.

The invention discloses cat litter comprising a composition prepared from the following components in percent by weight: 50-80% of inorganic clay, 5-15% of silica gel, 5-20% of organic substrate and 8-20% of mineral matter, wherein the inorganic clay is selected from one or a mixture of attapulgite, bentonite, kaolinite and sepiolite; the organic substrate is selected from one or a mixture of corncob, corn, wheat, clover, peanut hull, walnut shell, pine wood shavings and broadleaved tree wood shavings; and the mineral matter is selected from one or a mixture of perlite, diatomite, pumice and other low-density mineral matters. The cat litter disclosed by the invention has the following advantages of largely strengthened adsorption deodorization capacity due to the addition of the silica gel component, stronger deodorization capacity by utilizing the adsorbability of natural materials, natural fragrance, small weight and strong caking capability, in particular no dust and easiness for treatment; and the cat litter disclosed by the invention is 40% lighter than the traditional bentonite cat litter.

A method and apparatus for adjusting corneal curvature of the eye comprising an adjustable corneal arcuate segment or segments which is implantable into the cornea. The arcuate segment is a flexible hollow shell composed of a synthetic or a natural material, with an annular chamber that is filled with a predetermined amount of a biocompatible material. The corneal curvature is adjusted by removing or augmenting the predetermined amount of biocompatible material contained in the arcuate segment.

The invention relates to the field of environmental protection and restoration and in particular relates to an environmental-friendly heavy metal stabilizer used for soil restoration of an industrial pollution site and an application method thereof. The environmental-friendly heavy metal stabilizer is prepared from the following material components in parts by weight: 40-50 parts of clay mineral, 17-24 parts of adsorbing material, 10-18 parts of heavy metal chelating agent, 4-8 parts of heavy metal precipitating agent and 10-15 parts of alkaline modifier. Main ingredients of the adopted stabilizer are natural materials, heavy metal pollutant in soil can be rapidly and effectively stabilized through composite action such as chelating, precipitation and adsorption; the heavy metal pollutant is stabilized for a long time, toxicity and biological availability of the heavy metal pollutant can be reduced, risk of the heavy metal polluted soil to the environment and human health is reduced, and the heavy metal polluted soil is restored; besides, a soil texture improving ingredient is contained, so that soil is restored while tillability of the soil is improved.

A stabilizer suitable for heavy metal contaminated soil and an application method thereof belong to the technical field of contaminated soil remediation treatment. The invention is characterized in that: the soil stabilizer comprises the following components by mass: 5%-8% of heavy metal chelants, 10%-20% of gelled materials, 50%-65% of clay mineral, 10%-15% of alkaline excitants; the gelled material, clay mineral and alkaline excitant are mixed and grinded to obtain a Blaine specific surface area of 5000-8000 cm2/g; the mixture is sieved by a 200-mesh sieve, and the water content is less than 3%; the heavy metal chelant is prepared into a solution by water with a mass percent of the chelant being 20%-40%. The stabilizer and soil are uniformly mixed, and conserved for above 5 days. The main components of the stabilizer are mostly natural materials; after the stabilizer is used, heavy metal contaminants in soil can be rapidly and effectively stabilized, and the toxicity of the contaminants is reduced. The materials used are economical and easily available, and do not cause secondary contamination, and the stabilizer is a rapid and high-efficient stabilizer for heavy metal contaminated soil.

Normal cells, such as fibroblasts or other tissue or organ cell types, are genetically engineered to express biologically active, therapeutic agents, such as proteins that are normally produced in small amounts, for example, MIS, or other members of the TGF-beta family Herceptin(TM), interferons, andanti-angiogenic factors. These cells are seeded into a matrix for implantation into the patient to be treated. Cells may also be engineered to include a lethal gene, so that implanted cells can be destroyed once treatment is completed. Cells can be implanted in a variety of different matrices. In a preferred embodiment, these matrices are implantable and biodegradable over a period of time equal to or less than the expected period of treatment, when cells engraft to form a functional tissue producing the desired biologically active agent. Implantation may be ectopic or in some cases orthotopic. Representative cell types include tissue specific cells, progenitor cells, and stem cells. Matrices can be formed of synthetic or natural materials, by chemical coupling at the time of implantation, using standard techniques for formation of fibrous matrices from polymeric fibers, and using micromachining or microfabrication techniques. These devices and strategies are used as delivery systems via standard or minimally invasive implantation techniques for any number of parenterally deliverable recombinant proteins, particularly those that are difficult to produce in large amounts and/or active forms using conventional methods of purification, for the treatment of a variety of conditions that produce abnormal growth, including treatment of malignant and benign neoplasias, vascular malformations (hemangiomas), inflammatory conditions, keloid formation, abdominal or plural adhesions, endometriosis, congenital or endocrine abnormalities, and other conditions that can produce abnormal growth such as infection. Efficacy of treatment with the therapeutic biologicals is detected by determining specific criteria, for example, cessation of cell proliferation, regression of abnormal tissue, or cell death, or expression of genes or proteins reflecting the above.

An IC card includes a first visible layer including a natural material having a unique visual pattern. A storage device is configured to store a digital reference image of the unique visual pattern to be visually compared with the unique visual pattern for authentication. An authentication method based on the IC card is also provided.

The patent relates to health foods containing natural astaxanthin, which is made into liquid capsule containing natural astaxanthin with natural astaxanthin oil, edible oil and fat and natural antioxidant as raw materials by conventional processing; or which is made into power capsule or tables containing natural astaxanthin with natural astaxanthin, natural antioxidant and other health food as raw materials by conventional processing. In comparison with present technology, the advantage of the invention includes, (1) the health food provided in present patent takes natural astaxanthin as main raw material, has the strongest antioxidant, capable of improving human immunity and anti-aging and ranking first in terms of health foods containing natural antioxidant; (2) the health food is made from pure natural materials and without any compound materials and side-effect; (3) the natural astaxanthin of health food coordinately used with shark cartilage, glucosamine hydrochloride, chitosan, propolis and paclitaxel etc as function material, which is capable of enhancing astaxanthin function; (4) adding antioxidant of natural tea-pigment and tea polyphenols is capable of avoiding oxidation of astaxanthin, thus prolonging shelf life more than one year.

The invention provides a preparation method for multiple micropore negative ion far-infrared electric field biological affinity packing. The preparation method is characterized by taking synthetic polymer particles as base materials, adding multiple micropore biological affinity materials or other modified materials, and simultaneously adding natural materials continuously and automatically generating the negative ion and the far-infrared ray to the base materials, then adding all the materials into a mixer, adding dispersing agent to have all the materials fully and evenly mixed, transferring the mixture to a mixing hopper of a injection molding machine to have various types of random-packed packing directly injected in mould; or having the various types of the random-packed packing made into synthetic macromolecule multiple micropore negative ion far-infrared electric field biological affinity function master batch, adding proper fresh macromolecule materials to be shifted to a drawing mill, pulling out elastic packing strips prior to being processed into elastic packing; and/or shifting the fresh macromolecule materials to spinning equipment to make the same into fiber strips, utilizing a needle machine to have the fiber strips woven into curtain-type packing strips. The preparation method has the advantages that the preparation method is fully used for absorbing and bearing a great deal of multiple types of microorganisms to play a role of synergistic degradation; and absorption of the micropore materials and degradation of the microorganism play a synergistic function together during the course of pollutant removal.

The invention relates to artificial skin prepared from purely natural materials and having gradient hole structure and property and a preparation method thereof. The artificial skin comprises an epidermal layer and an enderonic layer, wherein the epidermal layer and the enderonic layer both have the gradient in the structure and the property simultaneously and the thicknesses of the epidermal layer and the enderonic layer are between 0.5 millimeters and 1.5 millimeters and can be regulated as required; the epidermal layer is a thin film which has the functions of water prevention, air permeation and enderon protection and has compacter structure, and the dimensions of holes are smaller than 5 micrometers; the epidermal layer has degradability, degrading period between four months and six months and good elasticity and ductility; the enderonic layer of the artificial skin is prepared from collagen and polysaccharide in a simulating way, in a sponge shape, porous and mutually communicated, the dimensions and the distribution of the holes are in gradient distribution from top to bottom, and apertures are increased from 20 micrometers to 300 micrometers; the enderonic layer has different degrading periods from top to bottom and is also in the gradient distribution, degrading speed is increased from top to bottom, and the degrading periods are accelerated from four months to two weeks; and the dimensions and the distribution of the holes and the gradient of degradation are controlled by the component transformation and a multi-layer overlying processing technology.

The invention discloses a recycled aggregate ecological water permeable brick and a production method thereof. The raw material of the recycled aggregate ecological water permeable brick comprises a basic material, a surface material and water, the basic material comprises recycled aggregate, a gel material and additives, the gel material comprises cement, lime and coal ash, and the additives comprise a polycarboxylate superplasticizer and gelatine powder. The production method of the recycled aggregate ecological water permeable brick comprises the following steps: grading, extracting and preparing for discharging of the recycled aggregate, stirring the basic material, stirring the surface material, forming, curing and forming the finished product. The recycled aggregate ecological water permeable brick disclosed by the invention is produced by building wastes after resourceful treatment, which both promotes the resource utilization of the building wastes to improve the added value of products, and saves a large number of natural sand and stone resources; the produced recycled aggregate ecological water permeable brick has a high permeable rate, a high water-retention rate and high compressive strength, and the compressive strength reaches 30 MPa; and the permeation coefficient is 0.5 cm/s, which is 50 times as large as that of the existing national standard and much better than the properties of similar natural material products.

The invention relates to a material prepared from a purely natural material and used for wounds. The material is prepared by compounding fibroin protein or collagen protein and chitosan or alginic acid or glucan or hyaluronic acid high molecular polysaccharide. All the high molecular raw materials have favorable biologic compatibility and are widely applied to the fields of tissue engineering, medical appliances or medical auxiliary materials and the like.

The invention relates to a method for manufacturing a biodegradable composition containing nano-particles of cellulose for forming a protective coating on natural materials. It is an object of the invention to provide a composition for forming a protective coating layer on a biodegradable natural material that imparts to the material improved waterproofing and grease-resistant properties. It is another object to provide a composition for forming a protective coating on natural biodegradable materials that is based on the use of nano-cellulose particles and that protects these materials from swelling, warping, and mechanical damage during contact with water, other aqueous liquids, or grease.

The invention relates to a preparation method for a composite magnetic adsorption material and a method for removing heavy metal ions in waste water. The preparation method comprises the following steps: (1) putting a magnetic seed in a grinding machine for fine grinding so as to obtain a submicron magnetic particle; (2) mixing the magnetic particle and a high-molecular natural material capable of absorbing heavy metals with a solvent, adding a flocculating agent and carrying out uniform mixing and a reaction so as to obtain a spherical composite magnetic product; and (3) subjecting the composite magnetic product to magnetic separation, washing and drying so as to obtain the composite magnetic adsorption material. The magnetic adsorption material is added into waste water containing heavy metal ions, then stirring, adsorption and a reaction are carried out, a magnet separator is used for magnetic separation and adsorption of magnetic material containing heavy metal ions, and heavy metals are recovered. According to the invention, the adsorption material is easy to prepare; the removal rate of the heavy metals is high; the advantages of simple process, low cost and environment friendliness are obtained; and the methods are suitable for industrial application.

The invention discloses a reed switch induction soft wood floater water shortage detecting mechanism with a medicine bag. The mechanism comprises a sleeve, a floater, a plurality of limiting grids, a limiting column, a limiting groove, a permanent magnet sheet, a reed switch, a detecting alarm circuit, a medicine bin cover, a through hole and the medicine bag, The upper limiting grid and the lower limiting grid are arranged in the sleeve. The floater is arranged in the sleeve and between the two limiting grids. The limiting column is arranged at the front end of the floater. The limiting groove matched with the limiting column is formed in the inner wall of the sleeve. The permanent magnet sheet is embedded in the rear end of the floater. The reed switch corresponding to the permanent magnet sheet is embedded in the wall of the sleeve. The reed switch is connected with the detecting alarm circuit. A detachably-connected medicine bin is arranged at the upper end of the sleeve. The medicine bin cover, the upper limiting grid and the sleeve are matched with one another to form the medicine bin. The medicine bag is arranged in the medicine bin and filled with traditional Chinese medicines of a health care formula. Compared with the prior art, the mechanism has the advantages of being high in applicability, easy to operate and low in cost, being made from natural materials, and having certain antibacterial and health-care effects.

The invention relates to a method of preparing biomass charcoals with natural materials, which comprises the following steps: collecting and putting the natural materials into a carbonization furnace after drying and removing impurities, covering the sealing cap, opening the airflow adjusting valve, and heating to remove residual moisture; continuously heating for pre-carbonization; after adjusting the temperature in the furnace to the carbonization temperature, closing the airflow adjusting valve, carrying out therrmolysis and carbonization in the airproof and oxygen-deficient environment, cooling the furnace to the temperature of 60 DEG C, and discharging the biomass charcoals from the discharging port. High temperature insulation materials are coated on the inner wall of the carbonization furnace body, and an oven, an electric heating zone and a funnel-shaped discharging zone are sequentially arranged on the furnace body from top to bottom, wherein the lower part of the oven is of a funnel shape, the center of the electric heating zone is provided with a material discharging straight channel, the lower edge of the funnel-shaped structure is communicated with the upper edge of the material discharging straight channel, a movable mesh grate is arranged at the junction, a circular electric heating tube is wound around the discharging channel; a sealing cap is arranged on the feeding port, and a sealing baffle is arranged on the discharging port of the funnel-shaped discharging zone.

The invention relates to tea drink with main materials of purple potato leaves and blueberry leaves. The tea drink is precisely prepared by inactivating, kneading and drying 10-50 parts by weight of purple potato leaves, 10-50 parts by weight of blueberry leaves, and the materials of purple potato flower, purple potato stem, blueberry flower and the natural material of cordyceps militaris, and thelike. The purple potato leaves, blueberry leaves, purple potato flower, purple potato stem, blueberry flower and the natural material of cordyceps militaris are rich in vitamin C. The anthocyanin ingredients contained in the blueberry leaves can delay aging and improve the immunity of a human body. The tea drink has obvious effect and favorable stability without toxicity. After drunk by most people, the tea drink is proved to have rich nutrition, comfortable mouth feeling, and convenient drinking and be easily absorbed. The tea drink has the characteristics of specific prescription, reasonable formula, simple process, strong health-care function, safety and non-side effect, is good for both children and adults, can be drunk for a long time and has good health-care effect.