327 results about "Environmental hazard" patented technology

The invention discloses a microbiogenic cement and concrete and a production method thereof, which mainly mixes the Bacillus pasteurii solution for producing urease and an admixture of containing urea and mineral calcium salt and obtains the microbiogenic cement after reacting in a certain condition; adds admixture such as sand etc. into the mixture of mixing the bacterial solution and the mixture and reacts to generate the microbiogenic concrete. The microbiogenic cement or concrete of the invention can be used on protection and restoration of masonry ancient architectures and repair of cracks on concrete building or treatment of liquescent sandy soil. The invention provides a permanent method of safety, effectiveness and without environmental hazard for repair and strengthening technology of large quantity of civil architecture and structure; the invention has the advantages of the good effects, the good weatherability, the good permeability of gas and the good permeability of water and being especially suitable for treatment of the sandy soil; the invention is safe and environmental-friendly, and belongs to the environmental-friendly restoring material.

Traditionally, the primary method for impacting insect pest populations is the application of broad-spectrum chemical insecticides. However, there is increasing concern about the environmental hazards associated with the production and use of synthetic chemical pesticides. Thus, there is substantial interest in developing alternative pesticides, including biological control of insect pests of agricultural significance using a microbial agent or another species of insect. The present invention provides compositions and methods for such biological control. Modified Cry3 pesticidal polypeptides, polynucleotides encoding such polypeptides, and methods of use are disclosed. The modified polynucleotides provided herein can be used to transform organisms and cells of hosts comprising plant, insects, and microorganisms. The expression of modified polypeptides can provide the host with improved insecticidal activity against one or more insect pathogens.

A system includes one or more devices for providing information about a physical condition or environmental hazard. Each device includes a sensor physically associated with the user for detecting a predetermined environmental hazard and / or a physical condition of the user. The device is usually in the form of a wristband patch or tag attached to the user. The one or more sensors are adapted to detect predetermined chemicals, biological organisms, radiation or user blood pressure, heart rate, temperature, oxygen level, glucose level, skin condition, or biological and chemical changes of the user. An electronic circuit communicates with the sensor and includes an alarm for notifying the user or a third party of elevated environmental hazards or abnormal physical conditions of the user. Typically, the electronic circuit includes a transmitter, such as a radio frequency transmitter, for conveying information obtained from the sensor and electronic circuitry to a third party.

The invention relates to a titanium-based multi-metal oxide catalyst for removing diesel engine NOx by NH3-SCR in a wide temperature window, belonging to the technical field of exhaust contaminant control on diesel engine tail gas. The catalyst uses nano TiO2 as a carrier, uses metal oxides V2O5, CeO2, MnO2 and Fe2O3 as main active components, and uses WO3 and MoO3 as catalyst promoter components, wherein the contents of the main active component in the catalyst respectively are as follows in percentage by weight: 48-84% of TiO2, 1-3% of V2O5, 5-15% of MnO2, 1-5% of CeO2, 1-5% of Fe2O3, 3-9% of WO3 and 5-15% of MoO3. The preparation process of the catalyst comprises the following steps: pre-activating the TiO2; and determining charge numbers of the metal oxide main active components and the catalyst promoters, and charging the metal oxide main active components and the catalyst promoters. By replacing high poisonous V oxides with Ce, Mn and Fe oxides, the invention reduces environmental hazard of the catalyst, greatly improves the low-temperature activation and the high-temperature selectivity, and effectively decreases NOx in the wide temperature window of 100-550 DEG C. The catalyst has high sulfur poisoning resistance and water poisoning resistance, and is suitable for high-sulfur diesel fuel and urban road conditions in China.

A vehicle designed to detect, identify, and establish the location of portable objects in a building or structural space, such as portable medical equipment in a hospital environment, that move from place to place as they are used. The vehicle system provides for automatic detection and correlation of the objects' locations, while the vehicle is propelled within the structural environment, using passive radio frequency transponder technology to detect the presence of tagged objects and tagged fixed locations, basic identification of the object or spatial location replying to the interrogation, and time-stamped correlation of objects and spatial locations. The transmitters and antennae are mounted in the vehicle and are protected from environmental hazards such as pressure washing. An integrated microprocessor performs the requisite algorithms needed to process the reply from one or more Radio Frequency IDentification (RFID) tags, correlates the data and transmits the data, via a wireless RF modem mounted to the vehicle, to a central modem for storage and processing. Rechargeable dry cell or gel batteries power the vehicle's electronics for 24 hours or more, and the vehicle is equipped with an onboard battery charger that can be plugged into a standard AC power socket.

An environmental hazard warning system is provided. The environmental hazard warning system includes a data unit, a comparison unit, and an alarm unit. The data unit is capable of storing a plurality protective suit tolerance data. The comparison unit receives a portable sensor parameter signal including a portable sensor parameter from a portable sensor, and compares the portable sensor parameter with the protective suit tolerance data corresponding to the portable sensor parameter. The alarm unit transmits an alarm signal corresponding to the comparison between the portable sensor parameter and the protective suit tolerance data. The disclosure further provides an environmental hazard warning method.

A system, including a radiological or other environmental hazard detector, has means to overlay graphical and or alpha numeric text video of the hazard status, alarm annunciation, and or hazard level information, onto the video output of a pre-existing surveillance camera installation. The surveillance camera installation can be fixed or mobile. The system, contained in a field installable module, may utilize power available from the surveillance camera installation. The analog video coaxial cable from the camera is interrupted, such that the video signal is run through the module. This system permits low cost installation of environmental hazard monitoring into an existing analog video surveillance system.

The invention discloses a modification and innocuous treatment method of phosphogypsum, comprising the following steps: (1) cleaning, (2) neutralizing, (3) dehydrating, (4) calcining, and (5) packaging. The modified phosphogypsum prepared by the invention is a raw material for building material, can be used for preparing a phosphogypsum high strength cement fiberboard. The modified phosphogypsum sandwich panels prepared by the phosphogypsum high strength cement fiberboard can be applied in wall material, floor and roof panel, and has the advantages of good antifreezing performance, thermal insulation performance, heat shielding performance, corrosion resisting performance, fireproof performance, high intensity, light specific gravity, easiness in installation and the like. According to the invention, the waste residue phosphogypsum of phosphorus chemical enterprises are recycled through modification treatment and can be used for producing building materials after recycling, so that the national energy saving policy and the development direction of circular economy are satisfied; even temporarily unable use occurs because of investment or other reasons, the modified phosphogypsum can be stored in long term without environmental hazard, so that the harmlessness is realized.

The invention relates to a non-phosphorus composite anti-incrustation corrosion inhibiter, the non-phosphorus composite anti-incrustation corrosion inhibiter comprises a) water-soluble molybdate and / or water-soluble tungstate; b) two different salts in water-soluble borate, water-soluble gluconate and water-soluble silicate; and c) at least an anti-incrustation dispersant, wherein the anti-incrustation dispersant is a non-phosphorus polymer containing carboxylic acid groups. The non-phosphorus composite anti-incrustation corrosion inhibiter of the present invention has the advantages of good combination property, possesses excellent function to block CaCO3 incrustation, has good capability for stabilizing Zn<2+> in water and corrosion slowing performance, can be used for circulating cooling water process and solves the environmental hazard caused by the drainage of phosphorus.

Methods for fabricating solar cells without the need to perform gasification of metallurgical-grade silicon are disclosed. Consequently, the costs and health and environmental hazards involved in fabricating the solar or silicon grade silicon are being avoided. A solar cell structure comprises a metallurgical grade doped silicon substrate and a thin-film structure formed over the substrate to form a p-i-n junction with the substrate. The substrate may be doped p-type, and the thin film structure may be an intrinsic amorphous layer formed over the substrate and an n-type amorphous layer formed over the intrinsic layer.

The invention relates to a formaldehyde-free environment-friendly vegetable protein modified adhesive, which aims to solve the problem that the prior urea-formaldehyde adhesive, phenolic aldehyde adhesive and melamine aldehyde adhesive release formaldehyde and cause environmental hazard and pollution, etc. The compositions in portion by weight of the modified adhesive are: 30 to 50 portions of natural plant dregs, 5 to 12 portions of basic material, 5 to 10 portions of calcium hydroxide emulsion, 6 to 15 portions of urea, 4 to 10 portions of alkyl sodium sulfate, 2 to 5 portions of 10 to 20 percent of inorganic acid and 90 to 120 portions of deionized water. The invention takes macromolecular proteins in natural plant soybean dregs, peanut dregs, rapeseed dregs, cottonseed dregs, linseed dregs and sunflower seed dregs as raw materials so as to synthesize a new-generation formaldehyde-free environment-friendly vegetable protein modified adhesive through chemical modification. The formaldehyde-free environment-friendly vegetable protein modified adhesive has the characteristics of uniform and stable product, high adhesion strength, hydrolysis resistance and nontoxicity, etc.; moreover, the performance and the price of the modified adhesive are suitable for wood adhesion and for making artificial fiber boards such as plywood, shaving board and fiber board.

The invention discloses a nano composite flame-retardant reinforced polyester engineering plastic and a preparation method thereof. The preparation method is characterized by comprising the following steps of: mixing 45 to 80 percent of polyester, 5 to 20 percent of metal hypophosphite, 3 to 15 percent of nitrogen-containing flame retardant and 0.5 to 5 percent of nano modified additive uniformlybased on the percentage of the total mass of the composite material, heating the mixture to be between 230 and 275 DEG C, and performing melting, blending, extrusion, bracing, cooling, granulation and drying on the mixture. The obtained nano composite flame-retardant reinforced polyester engineering plastic has good flame-retardant property and physical property, overcomes the defects of high environmental hazard of halogen-containing flame retardant, high addition of organic flame retardant, poor physical property of materials and the like in the conventional polyester reinforced material modification technology, and has strong application prospect.

A two module keyboard with splash-resistant mechanism has a key module that can be separated by a user from a base module. One group of components becomes a detachable and user-serviceable key module, while the other group stays as the base module. The detachable module contains essentially the keycap portion that causes substantially more malfunctioning of present day keyboard components than the rest. The base module has a bay that receives the detachable key module, and contains the electrical circuitry membrane and PCB that has longer durability than the key portion. Drain holes at lower end of the bay will allow liquid spillage, or water / solution if used to clean the bay, to flow out of the keyboard. Depending on applications, the detachable key module can be further broken into more sub-modules. Keyboards made according to the present invention are modular in nature, and are conducive to reducing the costs for keyboard related services and exchanges, costs for curing accumulative environmental hazards and costs for fitting suitable user keys for swapping among different languages and computer applications.

Methods for fabricating solar cells without the need to perform gasification of metallurgical-grade silicon are disclosed. Consequently, the costs and health and environmental hazards involved in fabricating the solar or silicon grade silicon are being avoided. A solar cell structure comprises a metallurgical grade doped silicon substrate and a thin-film structure formed over the substrate to form a p-i-n junction with the substrate. The substrate may be doped p-type and the thin film structure may be an intrinsic.

The invention discloses a preparation method and application of cow dung biological carbon. The method comprises the following steps: naturally air-drying, crushing and sieving with a sieve of more than 40 meshes cow dung; performing pyrolysis under an air-free condition; mixing a product obtained by pyrolysis and a strong alkaline solution, adding water for rapid and uniform stirring, performing clarifying and filtering, and extracting filter residues; performing washing and drying to obtain activated cow dung biological carbon. According to the preparation method and the application, adsorption and removal effects of the cow dung biological carbon on aqueous solutions of heavy metals lead, cadmium, zinc, copper, nickel and the like are greatly improved, better fixing effects on lead, cadmium, zinc, copper, nickel and the like in soil are achieved, acid soil can be improved, organic matters of the soil are improved, and soil carbon fixation is facilitated. The preparation method is simple, and has far-reaching social significance and economic value, conditions are mild, industrial production is facilitated, additional environmental hazards can be avoided, the utilization efficiency of biomass resources is improved, and the problem of difficulty in degradation and reutilization of agricultural and forestry biomass residues is solved.

The invention discloses a method for growing an ABX3 perovskite single crystal by antisolvent diffusion. The method comprises the following steps: dissolving an A-containing halide and a B-containing metal compound in a solvent M, and adding a right amount of antisolvent N to obtain an approximately saturated single crystal growth solution, wherein the mole ratio of the A-containing halide to the B-containing metal compound is 1:(0.1-2); putting the open container P containing the approximately saturated single crystal growth solution into the closed container Q containing the antisolvent N; and at a certain temperature, carrying out seed crystal culture and seed crystal growth (two growth processes) to obtain the ABX3 perovskite single crystal with required size. According to the method for preparing the high-quality perovskite single crystal, the principle that the antisolvent diffuses to the single crystal growth solution is utilized to slowly lower the solubility of perovskite in the single crystal growth solution, so that the solution precipitates the perovskite single crystal. The method has the advantages of large size and high quality of the obtained single crystal, high utilization ratio of raw materials, simple facility request, simple technique, low environmental hazard and the like.

A collapsible electronic equipment enclosure surrounds portable or tabletop electronic equipment, such as laptop computers, with opaque protective sheeting supported by flexible struts. An opening is provided that may include a transparent window and provision for hand entry to permit use of the contained equipment while it is protected from environmental hazards. Provision is made for equipment display visibility in bright sunshine and lighting. Restricting visibility of the equipment display enhances privacy. The enclosure collapses to store in a narrow space, is lightweight, and can be used to transport the contained equipment either by a carry handle or as a backpack. The enclosure can be anchored to a tabletop for motion protection. It can also be locked closed and the contained equipment fastened by a security cable and lock to provide theft and tamper protection for the contained equipment and the enclosure when unattended.

The invention provides a cast-in-situ granolithic flooring. The granolithic flooring is made from a gelling material, an aggregate, an additive and a pigment, the gelling material is selected from various types of cement and / or gypsum, the aggregate is anyone or all selected from marble and / or granite and / or quartz stone broken particles, glass sands, bead pieces, shells, colorful synthetic glass particles and acrylic particles, and the additive is one or all selected from a water reducer, a reinforcing agent, a plasticizer, a leveling agent, a tackifier and an organic high molecular polymer. The raw materials of the granolithic flooring have low prices, are easy to obtain, and are recyclable, so the granolithic flooring belongs to an environmentally-friendly and renewable high-tech product, and can widely replace natural stones and resin type artificial stones to reduce the natural stone resource consumption for the society, reduce the use of organic solvents and reduce environmental hazards.

The present invention relates to a marine hydrate mining environment three-dimensional monitoring system, which comprises a drilling platform, an inner core monitoring circle, an outer core monitoring circle, and an outer-circle cruise monitoring area. A main production well is adopted as the circle center of the inner core monitoring circle. The inner core monitoring circle comprises an environmental monitoring sub-well, sit-on-bottom type seabed workstations and a terrain deformation monitoring device. The outer core monitoring circle is uniformly provided with mooring system submersible buoy workstations distributed along the circumference of the outer core monitoring circle, wherein the sit-on-bottom type seabed workstations and the mooring system submersible buoy workstations are in the staggered arrangement. The outer-circle cruise monitoring area is provided with an AUV (Autonomous Underwater Vehicle) and a seabed connection platform. The seabed connection platform provides the power supply and the power distribution in the unified way and is respectively connected with all the above devices through cables. According to the technical scheme of the invention, the water pollution, the biological damage, geological disasters and other factors, which might occur during the hydrate mining process, are comprehensively considered. Therefore, the environmental effects of hydrate mining activities are comprehensively and effectively evaluated. Potential environmental hazards are warned in advance. Therefore, the system is a scientific evaluation system for the commercial exploitation of hydrates in the environmental aspect.

A tire protective cover for covering and protecting a static mounted tire from environmental hazards, wherein the environmental hazards include ultra-violet radiation and air-borne contaminants such , corrosive fluids or paint protection from dogs urinating on rims and tires. The tire cover includes a resilient casing for covering both one side of a tire, wherein the resilient casing covering the one side of the tire has a generally circular member having a radially adjacent series of sequentially raised concentric annular surfaces. Lugs are provided for gripping, and structurally reinforcing, the concentrically inner, center portion of the cover.

A permeation resistant polymer fuel tank having a multilayer wall that includes a structural layer and a vapor barrier layer. A secondary barrier layer is attached to the multilayer wall wherein the vapor barrier layer and the second barrier layer have a permeation rate less than the structural layer. A protective coating may be applied over the secondary barrier layer to add durability and prevent degradation of the secondary barrier layer from environmental hazards that fuel tanks may be exposed to.

A protective enclosure for protecting garden plants against frost and other environmental hazards. The enclosure consists of semi-circular arches over which a protective cover is deployed. The cover is held in place by elastic hold-downs strung across the outside of the cover at each arch. Each arch presents to the hold-down a concave shape that receives and stabilizes the hold-down element. The cover is translucent to sunlight and may include two types of material, one impervious to wind and rain, the other a mesh transparent to wind and rain. The wind-impervious material may be bunched up under the hold-downs, leaving plants protected only by the mesh. Access to plants is gained by lifting and bunching up the mesh, which is re-deployed when access is no longer necessary.

A protective enclosure for protecting garden plants against frost and other environmental hazards. The enclosure consists of support arches over which a protective cover is deployed. The cover is held in place by elastic hold-downs strung across the outside of the cover at each arch. Each arch presents to the hold-down a concave shape that receives and stabilizes the hold-down. The cover is translucent to sunlight and may include two types of material, one impervious to wind and rain, the other a mesh transparent to wind and rain. The cover or portions of it may be polarized to enhance or retard the pass-through of certain spectra of light. Access to plants is gained by lifting and bunching up the side portions of the cover, which are easily placed in a closed position again when access is no longer necessary.

The invention relates to a catalyst for removing nitrogen oxide through selective catalytic reduction for an automobile diesel engine adopting Ce2O3 and V2O5 double active compositions. The catalyst adopts scordierite honeycomb ceramics as a framework material, the Ce2O3 and the V2O5 as main active compositions, WO3 or MoO3 as an auxiliary catalyst composition, and TiO2 as a coating substrate, wherein the mass fraction of the main active compositions, namely the Ce2O3 and the V2O5, to the auxiliary catalyst composition WO3 or MoO3 to the coating substrate TiO2 is 1-3:6:12:85-93. The specific process comprises the following steps: preparing a TiO2 precursor solution; coating a TiO2 coating; coating an auxiliary catalyst; determining the loading of active compositions of oxides; and coating the main active compositions, namely the Ce2O3 and the V2O5. The catalyst replaces the V2O5 with high toxicity with the Ce2O3 with low toxicity, and reduces the environmental hazards of the catalyst, and the replaced catalyst has wider active temperature range, particularly greatly improves the low-temperature activity, and is particularly suitable for the traffic conditions of urban highways of China.

The present invention discloses a comprehensive treatment method for waste fused salts and dust collection slag produced through titanium tetrachloride fused salt chlorination. The method comprises that: waste fused salts discharged from a fused salt chlorination furnace are crushed, and the crushed slag is subjected to powder grinding; dust collection slag is subjected to beating diffusion to achieve a solid-liquid mixing state; the waste fused salt powder and the solid-liquid mixing state dust collection slag are uniformly mixed into a mixed material; the mixed material is subjected to oxidation calcination under the atmosphere condition of introduction of air and water vapor, the generated hydrogen chloride and the generated chlorine gas pass through a leaching system to generate hydrochloric acid, and the generated waste gas achieves the standard emission; and the calcined caking slag is subjected to crushing screening, an alkali liquid neutralization treatment is performed, and part of the chloride which is not completely removed reacts with an alkali liquid so as to generate the corresponding hydroxide and the corresponding salt water. According to the present invention, the environmental hazards caused by the waste fused salts and the dust collection slag are reduced, the chlorine ions and partial valuable elements in the waste fused salts and the dust collection slag are recovered, and the treated slag with the wide use is obtained.

The invention discloses a simple and convenient method for preparing high water solubility fullerol. The method comprises the steps of: firstly, carrying out an oxidation treatment on fullerene used as a raw material to obtain fullerene peroxide; and performing a reaction on the fullerene peroxide and a hydroxylation reagent with oxidizability to obtain the fullerol. A conventional preparation method of the fullerol is complex in process and poor in solubility, and metal ions are unavoidably introduced in a preparation process, so that the conventional preparation method is high in cost and large in environmental hazard. The method for preparing the fullerol disclosed by the invention is simple in process and good in water solubility, and cannot introduce any metal ions, so that the method for preparing the fullerol is low in cost; and the synthesis route is green and environmental-friendly.