806 results about "Chemical pollution" patented technology

A carbonization process for increasing the quality of wood by continuous gradient heating method includes such steps as heating to 120-140 deg.C, eating to 160-240 deg.C, spraying atomized water for slowly cooling to 100 deg.C, filling the saturated steam at 100 deg.C to return the water content back to 4-6%, and cooling to 15-30 deg.C.

The invention discloses a manufacture and application method for a graphene transistor and a biosensor of the graphene transistor, which is low in price, avoids chemical pollution of the surface of the graphene transistor, and is suitable for integrated manufacture and mass production of the graphene transistor and the existing electronic devices. A method used for growing zinc oxide nanowires or metal nano-particles on the surface of the graphene transistor and based on the manufacture method for the biosensor of the graphene transistor is further provided. Nanometer materials on the surface of the transistor are favorable for absorbing biological active substances (such as enzyme, deoxyribonucleic acid (DNA), ribonucleic acid (RNA), aptamer, antigen or antibody) with special identification capacity. Therefore, a graphene transistor channel has capacity of absorbing target analyte selectively, and sensitivity and selectivity of a sensor based on the graphene transistor channel are improved.

The invention provides a method for testing nuclear pollution and chemical pollution with a remote-controlled movable robot, which aims at the problem of automatic testing under the circumstances of nuclear pollution and chemical pollution. The invention has the following main points: a remote-controlled robot enters a polluted site under the remote wireless control by the operator and transmits the information of an accident site back to a local operation platform through wireless transmission; the movable robot is provided with a nuclear detector and an instrument cabinet; a chemical gas detector, a camera and an illuminating lamp are arranged in the instrument cabinet, and a camera captures the images of the indication panel of a chemical gas detector and transmits the images back to the local operation platform; the pollution source is removed or sampled by mechanical arms after being found; and the movable robot is provided with a GPS navigator to position the pollution source. The invention has the advantages of zero casualty, flexible replacement of instruments in the instrument cabinet and the like, and can be used in highly dangerous accident sites with nuclear pollution and chemical leakage, which can not be detected with normal means.

The invention discloses a method for preparing mulberry leaf tea. The method comprises the following processing steps that: 1, mulberry leaf picking; 2, air-drying and withering; 3, rotating; 4, desiccating at high temperature; 5, spreading for cooling; 6, secondary desiccation at high temperature; 7, rolling; 8, initial drying; 9, winnowing; 10, chopping; and 11, baking. The invention provides the method for preparing mulberry leaf tea without physical and chemical pollution of plant diseases and insect pests, mud, faecal pollution of birds and insects, pesticide pollution, air pollution and the like.

The invention discloses persimmon powder and a production technique thereof. The technique comprises the following steps that: after extraction of juice from persimmon, the juice undergoes zymohydrolysis, filtration, enzyme killing and concentration; after vacuum freeze drying of a concentrated solution, powdery materials with a tannin weight content between 1 and 99 percent are prepared; and the dissolution rate of the powdery materials in water is more than or equal to 50 percent. Compared with the prior art, the technique applies the technologies of zymohydrolysis and vacuum freeze drying in processing and production of persimmons, and selects the superior zymohydrolysis technology to perform cellular level processing on the persimmons on the premise that the compositions of the persimmons are researched; auxiliary materials used by the processing are ecological and environment-friendly and has no chemical pollution, and finished products are superior natural nontoxic chemical raw materials; and the materials are dried by adoption of the vacuum freeze drying technology, thereby the biological active ingredients of the materials are reserved to the maximum degree and the materials are easier to dissolve in water, consequently the materials are convenient to perform various chemical reactions so as to be widely applied in the chemical production. Moreover, the technique greatly releases the pressure of farmers for selling fresh fruit, and raw materials can be purchased from the farmers during the fruit thinning period; and the products obtained can be used for manufacturing cosmetics, recovering heavy metals in sewage, preventing the materials from being corroded, etc, and have a wide market prospect.

The invention provides a biophysical method for removing the endopleura of a walnut. The walnut with the shell is soaked by tap water for 12 to 24 hours, the shell is removed, the kernel is taken out, pectinase with the activity being 30000 IU is dissolved into disodium hydrogen phosphate-citric acid buffer liquid with the pH being 3.2 to 3.8, and 3 percent to 5 percent of pectic enzyme liquid is prepared and is heated to 50 DEG C. The soaked walnut kernel is soaked in the pectic enzyme liquid and is placed into an ultrasonic generator with the power being 250W and the work frequency being 40KHZ, the enzymolysis and the ultrasonic treatment are carried out for 2.5 to 5 hours at the constant temperature being 50 DEG C, the walnut kernel is fished out and is sprayed and flushed by flowing water with the pressure being 7 to 10 MPa until the endopleura is completely removed, the walnut kernel with the advantages that the color and the luster are opacified, the kernel fruit is complete, the texture is flexible, the mouth feeling and the flavor are pure and sweet as those of the fresh walnut kernel can be obtained, and when the walnut kernel is in vacuum package and freezing storage, a fresh walnut kernel storage method is obtained. The biophysical method adopts the advanced biological enzyme technology to be combined with the ultrasonic physical technology and has the obvious characteristics that the operation is simple, the processing condition is mild, no chemical pollution exists, the kernel and the nutrition are kept complete, and the sensory quality is good.

An active material electronic device is described with a containment layer. The device includes an active chalcogenide, pnictide, or phase-change material in electrical communication with an upper and lower electrode. The device includes a containment layer formed over the active material that prevents escape of volatilized matter from the active material when the device is exposed to high temperatures during fabrication or operation. The containment layer further prevents chemical contamination of the active material by protecting it from reactive species in the processing or ambient environment. The containment layer and intermediate layers formed between the active material and containment layer are formed at temperatures sufficiently low to prevent volatilization of the active material. Once the containment layer is formed, the device may be subjected to high temperature or chemically aggressive environments without impairing the compositional or structural integrity of the active material. Inclusion of the containment layer is shown to extend the cycle life of the device by over two orders of magnitude.

The invention provides a method for preparing high- purity konjak mannan with production purity over 95%. It comprises following steps: taking konjaku flour as raw material, producing mannan through enzymolysis, centrifuging and filtering and microfiltering and purifying, desalting with ion-exchange technology, decoloring, odour- removing, cutting off macromolecule with ultrafiltering membrane technology from sugar liquid, spray drying and getting high purity konjak mannan with purity over 95%. The invention is characterize by employment of enzyme technology, ion- exchange technology, membrane technology system, simple operation, good separation effect, low cost, no chemical pollution, realization of industrial production. The product can not only be used as functional health care product, but aslo as high- grade food ingredient, medical intermediate, and high- grade feed addictive.

The invention discloses a method for quickly detecting freshness of hairtail by using the near-infrared spectrum technology, and aims to overcome defects that a conventional hairtail freshness detection method is complex in process, and the freshness can be polluted by chemical agents. The method adopts the near-infrared spectrum technology and mathematical modeling to establish a model for detecting volatile basic nitrogen content in a hairtail body, then the volatile basic nitrogen content in a sample can be calculated by using the model to analyze a near-infrared spectrum of the hairtail sample, and lastly the freshness of the hairtail can be detected according to the content of the volatile basic nitrogen. The method has the advantage that the analysis speed is high, and chemical pollution can be avoided.

A method for rearing crab by ecological regulation belongs to the kind of ecological rearing in paddy field. With the technique development of paddy field comprehensive utilization, rearing crabs in paddy field has been public against that traditional method of production takes damage of chemical pollution on the field and crabs while can not meet the demand for green food. Based at the aim aforementioned, said invention fertilizes 50 % at the base of field and fresh water into field to cultivate crabs supported by plants and animals in water with additional bait, and whose excrement can be use as organic fertilizer for field. The invention performs no damage on the fields in the full process from cultivation period to capture period by adjusting the density of crabs, and performs harvest of paddy with high production of crabs.

The invention discloses a method for preparing cellulose nano-fibers based on a biomass material. The method comprises the following steps: carrying out drying and fining treatment on the biomass material; then, mixing the generated biomass material and an organic acid solvent, heating, reflowing and separating biomass cellulose; then carrying out nano fibration treatment on the separated biomass cellulose by adopting a physical method, so as to obtain the cellulose nano-fibers with high purity and a high length-diameter ratio. By adopting the method disclosed by the invention, the preparation efficiency is effectively improved and the cellulose nano-fibers with the high purity and the high length-diameter ratio can be prepared; the generation of chemical pollution wastes is reduced; meanwhile, a series of environment problems caused by the fact that chlorine is used in a traditional purification method are avoided.

The present invention relates to a technological process for extracting cyclophosphoadenosine from jujube. Said technological process includes the following steps: breaking, soaking, filtering soaking liquor, using ultrasonic technique to extract filter residue, combining extracts to obtain clear jujube juice; making the clear jujube juice be passed through ion exchange column, then making the eluent be again passed through ion exchange column, making the obtained secondary eluent be passed through chromatographic column, collecting solution containing cyclophosphoadenosine concentrating and crystallizing in ethyl alcohol so as to obtain high-purity cyclophosphoadenosine.

The invention discloses a preparation method of a long-acting anti-microbial textile. The preparation method concretely comprises the following processes: firstly a desizing or refining process is carried out for the textile, and pretreatment is carried out for the textile by using low temperature plasma; textile which is pretreated is dipped at a room temperature for 10-30 minutes in a mixed finishing solution which comprises a chitosan solution and a silver nitrate solution, the textile is taken out and superfluous finishing solution is rolled out, liquor retention is 100-150%, the textile which is dipped in the finishing solution is transferred into a piece of microwave equipment for carrying out treatment for a certain period of time, after the reaction ends, the textile is taken out and washed with water, and after drying, the anti-microbial textile is obtained. The anti-microbial textile has the advantages of excellent anti-microbial properties, washing resistance, lasting anti-microbial effects, simple preparation technology, and low chemical pollution; the method overcomes the problems of complex processes, bad stability of nanometer silver, bad anti-microbial durability and the like existed in the prior art.

The invention discloses a method for colloid removal with laser, which comprises S1 selecting portions where colloid needs removing on a printed circuit board (PCB), S2 grading colloid thickness of the colloid portions, S3 dividing into different colloid removal areas according to grading of different thickness, and S4 emitting different amounts of laser energy or number of laser scanning to the PCB to remove colloid. The invention further discloses a device and a system for colloid removal with laser. The method and the device achieve colloid removal with a purely physical method, are environment-friendly and free of chemical pollution, save time and labor, and greatly improve production efficiency.

The invention discloses a fabrication method for a predetermined pattern, which is mainly used for fabricating the predetermined pattern on a printed circuit board. The method of the invention comprises that according to the design of the predetermined pattern, the predetermined pattern is etched in the insulating base plate of the provided printed circuit board by utilizing the non-chemical etched laser beam. If the predetermined pattern is a line, the metallization treatment further performed to the etched predetermined pattern, and the required line can be formed. By using the accurately controlled laser etching, not only the chemical pollution does not caused, simultaneously, the required pattern can be accurately etched, but also the uneven and inaccurate thickness phenomenon does not occur.

The invention provides a multi-functional combined paw of a nuclear and chemical reconnaissance robot, which comprises a fixed support, a motor, a first gear, a second gear, a rod, a guide track, a first finger, a second finger, a camera head, a planar clamping part, a shovel, an arc-shaped clamping part and a slicing knife. The multi-functional combined paw is applicable to hazardous operation of the nuclear and chemical reconnaissance robot, and other working environments. The planar clamping part can be utilized for clamping a solid pollution source, the shovel can be used for sampling soil or sandstone in nuclear and chemical pollution, the arc-shaped clamping part is specially used for sampling liquid, and the slicing knife can not only cut open a weed heap or the soil and find the pollution source which is buried underground, but also cut a cable of an adversary or other similar objects when implementing a reconnaissance task in wartime. The multi-functional combined paw has the advantages of zero casualties and diversification of the implemented tasks, and can greatly improve the nuclear and chemical pollution accident handling capacity of the nuclear and chemical reconnaissance robot.

The invention relates to a composite polymer waterproof board, which is prepared from the following components in part by weight: 30 to 90 parts of ethylene-vinyl acetate (EVA) copolymer, 20 to 50 parts of linear low density polyethylene (LLDPE) and 0.5 to 1.5 parts of antioxidant. The composite polymer waterproof board has high seepage resistance, high barrier property, high puncture resistance, no chemical pollution, and resistance to acid, alkali and various chemical substances. The invention discloses a synthetic resin polymer waterproof board with high elongation and wear resistance and a preparation method thereof. The waterproof board is suitable for water and seepage resistance of civil engineering such as various tunnels, underground civil engineering, urban subways, water conservation, artificial lakes, refuse landfills, petrochemical plant waste residue treatment sites, sewage regulating tanks and the like.

The invention provides an application and preparation method of plant pure dew. Plant pure dew is obtained by steam stripping using plants as raw materials. The described pure dew can be used to replace water to prepare clean supplies or cosmetics. The invention does not use preservatives, and the product will not deteriorate for 2-3 years. This product can promote the development of my country's agriculture, stimulate domestic demand, promote and promote the development of my country's traditional culture, and truly achieve low-carbon from planting, production to use, and then to emissions. The purpose of environmental protection, no chemical pollution and no secondary pollution to the earth will become an important industry for future agricultural environmental protection projects, and it is also the general trend. The product has been aged for more than one year, and no germ infection or mildew has been detected through microbial testing, and the quality is safe and reliable.

The invention discloses an all-terrain crawler-type multifunctional fire fighting truck. The fire fighting truck consists of a truck body and a remote controller, wherein the truck body comprises a rubber crawler base, the front end of the rubber crawler base is provided with an engine compartment which is connected with driving wheels of the rubber crawler base, a battery compartment is arranged at the rear part of the engine compartment, the top part of the battery compartment is provided with a control compartment, a fire water monitor is arranged on the rear part of the rubber crawler base, and an imaging mechanism is arranged on the rubber crawler base. The all-terrain crawler-type multifunctional fire fighting truck is applicable to chemical industry and large warehouses and buildings and other high-temperature, strong thermal-radiation and easily collapsed places (places which fire fighting trucks and people cannot approach), can be used for fire fighting, cooling, washing out of chemical pollution and the like, meanwhile, the fire fighting truck can enter an area which is not suitable for people to enter for emergency rescue, and an ideal safety guarantee is provided for frontline fire fighters.

The invention discloses a method for dyeing fabric by natural grape seed extract. The dyeing method comprises: pre-treating fabric blank by scouring enzyme; bleaching by hydrogen peroxide solution with concentration of 27%; preparing dyeing composition; heating the prepared dyeing composition; putting the fabric into the dyeing composition and dyeing; soaping the dyed fabric circularly by soda water; and dewatering and drying the soaped fabric. The method has good environment compatibility, biodegradability and medicament health caring property; can obtain the product with high chroma brilliant color or soft color, meanwhile avoids the serious pollution caused by chemical dye, and meet the requirement of environment protection; can obtain various brilliant high chroma colors and a large number of demitints by multiple dyeing of different times and different colors; and is nontoxic, harmless, has no anaphylaxis or carcinogenicity to skin. The invention can be widely used for producing high-grade real silk product, health caring underwear, hometextile product, and ornaments.

The invention discloses a mine crystal formaldehyde remover used for decoration. The mine crystal formaldehyde remover used for the decoration comprises the following constituents: by weight, 10-15 parts of attapulgite, 10-15 parts of bentonite, 10-15 parts of sepiolite, 2-4 parts of kieselguhr, 10-15 parts of zeolite, 10-15 parts of zirconium phosphate and 10-15 parts of nanometer titania. The mine crystal formaldehyde remover used for the decoration is strong in air purification effect, has better absorption effects of benzene, ammonia and total volatile organic compounds (TVOC) and other chemical pollution in the air than traditional air purification materials such as activated carbon, and particularly has strong formaldehyde removing effects.

The invention relates to a control technology specially used for preventing and controlling important forest pest bursaphelenchus xylophilus (monochamus alternatus), namely a microcapsule powder agent or a microcapsule suspending agent prepared by a highly-efficient, harmfulless and less-persistent neonicotinoid insecticide thiacloprid sustained-release preparation and assisted by a high-adhesionadhesive is adopted for prevention and control. The technology adopts an innocuous and degradable carrier as shell materials, is safe to environment, has excellent durable effect and solves the greatproblems of bursaphelenchus xylophilus prevention and control and chemical pesticide pollution.

The invention discloses a method for determining the shear strength of chemically polluted soil and a special full-automatic direct shear apparatus. A chemical corrosion device is added for the direct shear apparatus compared with the prior art, infiltration holes are formed in the bottom of a shear box, and a notch groove is formed in the bottom of a container trough of the chemical corrosion device, so that when the method is adopted for determining, a chemical corrosion solution can be directly injected into the container trough to perform sealed maintenance; after maintenance is completed, vertical pressure loading is directly performed to complete a full-automatic direct shear test so that the pollutant corrosion situation of a soil body on site can be simulated, destroying-free maintenance of a tested soil sample is achieved, the influence of stress release in the sampling process is avoided, disturbance suffered by the soil body is reduced as far as possible, and the tested sample can be closer to the in-situ soil sample in property. In addition, due to the fact that the infiltration rate fluctuation of the chemical corrosion solution is smaller, a result is closer to the polluted situation of natural soil, corrosion distribution can be relatively uniform, the influence of local corrosion on the mechanical property determination of the soil sample is avoided, and the problem that a conventional direct shear apparatus cannot detect the shear strength and parameters of the chemically polluted soil is solved.

The invention relates to a multielement biological fertilizer and a method for making the same. The multielement biological fertilizer adopts garbage as a main raw material, utilizes multifactorial activity bio-fungus and adopts hair, pig hair, chicken feather, cow hair, sheep water chestnut and humus, thereby changing the waste into the valuable and providing the multielement biological fertilizer which does not have toxic and side effects or pollute the environment and has great fertilizer effect and constancy and stability. Compared with the fertilizer, the multielement biological fertilizer which is made from functional bacteria in the soil has evident ecological benefits such as changing the quality, loosening the soil and protecting the ecological environment. The multielement biological fertilizer does not have pollution and rapidly removes the pollution of the soil to the crops, thereby eliminating the harm of the chemical fertilizer and the farm chemical pollution to the crops. The multielement biological fertilizer is widely suitable for the crops such as rice, wheat, soy bean, corn, sorghum, orange, banana, tea, vegetables, watermelon, sweet potato, drug ingredients and flowers.