68 results about "Sarin" patented technology

Energetic materials, such as nitrocellulose, TNT, RDX, and combinations thereof, optionally in combination with chemical warfare agents, such as mustard gas, Lewisite, Tabun, Sarin, Toman, VX, and combinations thereof, are destroyed when chemically reacted according to the method of the invention. The method comprises reacting the energetic materials and chemical warfare agents, of present, with solvated electrons which are preferably produced by dissolving an active metal such as sodium in a nitrogenous base such as anhydrous liquid ammonia.

A fluorescence-based method for highly sensitive and selective detection of molecules of organic gases such as benzene, alcohol, chloroform, basic vapors including dimethyl methylphosphonate (DMMP) that is a simulant of Sarin, Soman and other chemical warfare agents having basic properties, is proposed. The method employs the effect of strong fluorescence change in thin films of aggregated porphyrins. In one preferred embodiment, the aggregation of porphyrin molecules leads to initial depression of chromophore emission due to self-quenching effect. The binding of analyte molecules to porphyrin sensitive layer forms porphyrin-analyte complexes, which destroy initial aggregate structure and induce the strong fluorescence enhancement. Aggregate-sensing films usually provide higher and faster response than porphyrins isolated in a polymer matrix. That results in strong enhancement of the florescence quantum yield and shift of the fluorescent spectrum in the direction of shorter wavelengths. The method can be used in fluorescence chemical sensors of organic gases for different applications including environmental monitoring, control of industrial processes and medicine.

A fluorescence-based method for highly sensitive and selective detection of volatile organic compounds such as vapors of benzene, alcohol, chloroform, dimethyl methylphosphonate (DMMP) that is a simulant of Sarin, Soman and other chemical warfare agents, is proposed. The method employs the effect of strong fluorescence change in thin films of aggregated porphyrins. In one preferred embodiment, the aggregation of porphyrin molecules leads to initial depression of chromophore emission due to self-quenching effect. The binding of analyte molecules to porphyrin sensitive layer forms porphyrin-analyte complexes, which destroy initial aggregate structure and induce the strong fluorescence enhancement. Aggregate-sensing films usually provide higher and faster response than porphyrins isolated in a polymer matrix. That results in strong enhancement of the florescence quantum yield and shift of the fluorescent spectrum in the direction of shorter wavelengths. The method can be used in fluorescence chemical sensors of organic vapors for different applications including environmental monitoring, control of industrial processes and medicine.

The invention discloses a novel sensor, and specifically discloses a molecularly-imprinted photonic crystal (MIPC) which is used for detecting organophosphorus toxicants timely and quickly. The MIPC employs methylphosphonic acid and ethylphosphonic acid as imprinting templates. An intensity of a reflectance spectrum of the corresponding imprinted photonic crystal decreases significantly with the increase of the concentration of a target compound or with the absorption time. The MIPC also shows some practical application values, and shows effects of low detection limit and high sensitivity in detections for the organophosphorus toxicants such as sarin, soman, VX and R-VX prototypes.

An easy-to-use, versatile, disposable, customer-replaceable, multi-use, DNA sample collection disk apparatus for use with fixed, portable, or field-based DNA sample collection, analysis, and detection systems is disclosed. General features of the invention are its' small form factor, portability, wearability, ease-of-use, and self-contained capacity to collect and analyze multiple different human DNA samples and sample types. The special utility of the invention is demonstrated in the field wherein neither trained medical personnel, nor conventional DNA testing labs, are necessary to operate the invention. Invention preferred embodiments include multipurpose cards or badges designed to (1) electronically authenticate subjects identities using DNA samples, and / or electronically detect presence or absence of biological agents (e.g., anthrax) and / or chemical agents (e.g., Sarin) using DNA samples; and (2) perform other DNA-based, protein-based, or other analytic and / or identification functions.

The invention relates to a fluorescent probe for detecting sarin and an analogue thereof. The fluorescent probe comprises a compound which is loaded on a substrate and has a structure shown as a formula I, wherein the formula I is shown in the description. The invention further provides a synthesis method and application of the fluorescent probe for detecting the sarin and the analogue thereof. According to the application provided by the invention, when a compound with the structure shown as the formula I in the fluorescent probe is in contact with the sarin or the DCP (Diethyl Chlorophosphate) in air, the fluorescence intensity and the emission wavelength are both changed, and gas-phase detection of the sarin and the DCP can be realized. The compound with the structure shown as the formula I can have one or more terpyridines; when the sarin or the DCP reacts with one certain pyridine in one certain terpyridine in a molecule, charge transferring from the fluorescent probe to the sarin or the DCP occurs; meanwhile, energy transferring from a polymer core to a peripheral radical occurs, and fluorescent quenching of the whole molecule is caused, so that the fluorescent probe has excellent sensing performance.

The invention provides an environmental-friendly plastic additive which contains 1) low-density polyethylene, 2) nano-calcium carbonate, 3) sarin, 4) high-density polyethylene, 5) lubricant, 6) modified starch, 7) low-temperature thermal oxidant, 8) antistatic agent, 9) microorganism preparation, 10) polypropylene and 11) glycerol or propanediol. The invention also provides a preparation method of the environmental-friendly plastic additive and environmental-friendly plastics containing the additive. The plastic products containing the environmental-friendly plastic additive emit toxic gas with low concentration when being burnt so as not to cause air pollution, and can be decomposed by biological degradation after being buried for one year. Furthermore, the environmental-friendly plastic additive can be formed by jetting or extruding technology according to the actual need, and has simple manufacturing technique and strong practicability.

The invention relates to the technical field of high polymer materials, in particular to a soft-touch antibacterial wood-plastic composite material and a preparation method thereof. The composite material comprises a core layer and a surface layer, and the surface layer wraps the surface of the core layer; wherein the core layer comprises the following components in parts by mass: 25-45 parts of polyolefin resin, 40-50 parts of plant fibers, 10-20 parts of an inorganic filler, 3-5 parts of a compatilizer, 1-3 parts of a lubricant and 0.2-0.4 part of an antioxidant; and the surface layer comprises the following components in parts by mass: 70-80 parts of ethylene-vinyl acetate copolymer, 10-20 parts of sarin resin, 3-5 parts of zinc borate, 1-3 parts of nano zinc oxide, 1-3 parts of nano silver oxide, 3-8 parts of a compatilizer, 1-3 parts of a foaming agent, 0.2-1 part of an antioxidant and 0.4-2 parts of a light stabilizer.

Method for hyper-spectral imaging and analysis of a sample of matter, for identifying and characterizing an object of interest therein. Preparing test solution or suspension of the sample, including adding thereto a spectral marker specific to object of interest, such that if object of interest is in test solution or suspension, object of interest becomes a hyper-spectrally active target which is hyper-spectrally detectable and identifiable; adding to test solution or suspension a background reducing chemical, for reducing background interfering effects caused by presence of objects of non-interest in test solution or suspension, thereby increasing hyper-spectral detectability of hyper-spectrally active target in test solution or suspension; generating and collecting hyper-spectral image data and information of test solution or suspension; and, processing and analyzing thereof. Exemplary objects of interest are biological agents—bacteria (Bacillus anthracis), viruses, fungi, toxins, or, chemical agents—nerve agents (sarin, tabun, soman), and chemical poisons.

The invention relates to an estimation method for the volume change of a subglacial lake. The estimation method comprises the steps that L1B waveform data in an SARIn mode of a CryoSat-2 radar altimeter in the corresponding time period are obtained; the surface elevation of a subglacial lake area is calculated through a waveform re-tracking method; obtained surface elevation data are pretreated toremove elevation change anomaly points; the pretreated elevation data are subjected to slope correction through a DEM to remove the error caused by the slope; 100*100 m of grids are finally generatedthrough kriging interpolation, then the elevation change in the corresponding time period is calculated, back scattering energy is added into elevation change values for correction, and the influenceof the back scattering energy to the elevation change is eliminated; and the shape and area of the subglacial lake are obtained through the elevation change values, the elevation change values of thesurface of the subglacial lake of each grid are integrated, and finally the volume change of the subglacial lake in the corresponding time period is obtained. According to the estimation method, fluctuation of the surface of the subglacial lake can be accurately and effectively reflected, and thus the volume change of the subglacial lake is estimated.

A fluorescence-based method for highly sensitive and selective detection of molecules of basic gases, such as dimethyl methylphosphonate (DMMP), Sarin, Soman and other chemical warfare agents, is proposed. The method employs the effect of strong fluorescence change in a solvatochromic dye isolated in a matrix of the hydrogen bond acidic polymer. In one preferred embodiment the dye and polymer matrix are chosen such that the hydrogen-bond interaction between them results in depression of the fluorescence yield of the sensitive material prior its interaction with the molecules of basic gases. The interaction between the molecule of basic gases and the acidic polymer matrix breaks the hydrogen bond of the dye with the polymer matrix "releasing" the dye and returning it back into the state with a low solute-solvent interaction. That results in strong enhancement of the dye florescence quantum yield and shift of the dye fluorescent spectrum in the direction of shorter wavelengths. The method can be used in fluorescence chemical sensors of basic gases for different applications including environmental monitoring, control of industrial processes and medicine.

The invention discloses a high-speed packaged multilayer co-extrusion, thermal forming and drawing bottom film which comprises a surface layer, a block core layer and a heat sealing layer, wherein the block core layer contains at least one polyamide layer; the heat sealing layer is selected from one of a POP layer, a POE layer and a sarin layer; the surface layer is a polyamide surface layer or a polypropylene surface layer. The high-speed packaged multilayer co-extrusion, thermal forming and drawing bottom film adopts one of the POP layer, the POE layer and the sarin layer as the heat sealing layer; as the three resin materials are high in low temperature heat sealing property and anti-fouling heat sealing property, the thin film can achieve the heat sealing effect which is the same as the heat sealing layer in the prior art under a short-time heating condition, and is more suitable for high-speed packaging. The invention further discloses a production process of the high-speed packaged multilayer co-extrusion, thermal forming and drawing bottom film.

A fluorescence-based method for highly sensitive and selective detection of analyte molecules is proposed. The method employs the energy transfer between two or more fluorescent chromophores in a carefully selected polymer matrix. In one preferred embodiment, signal amplification has been achieved in the fluorescent sensing of dimethyl methylphosphonate (DMMP) using two dyes, 3-aminofluoranthene (AM) and Nile Red (NR), in a hydrogen bond acidic polymer matrix. The selected polymer matrix quenches the fluorescence of both dyes and shifts dye emission and absorption spectra relative to more inert matrices. Upon DMMP sorption, the AM fluorescence shifts to the red at the same time the NR absorption shifts to the blue, resulting in better band overlap and increased energy transfer between chromophores. In another preferred embodiment, the sensitive material is incorporated into an optical fiber system enabling efficient excitation of the dye and collecting the fluorescent signal form the sensitive material on the remote end of the system. The proposed method can be applied to multichromophore luminescence sensor systems incorporating N-chromophores leading to N-fold signal amplification and improved selectivity. The method can be used in all applications where highly sensitive detection of basic gases, such as dimethyl methylphosphonate (DMMP), Sarin, Soman and other chemical warfare agents having basic properties, is required, including environmental monitoring, chemical industry and medicine.

The present invention provides an environmental protection plastic additive, which contains: 1) low density polyethylene, 2) nanometer calcium carbonate, 3) sarin, 4) high density polyethylene, 5) a lubricant, 6) modified starch, 7) a low-temperature thermal oxidizer, 8) an antistatic agent, 9) a microbial preparation, 10) polypropylene, and 11) glycerol or propylene glycol. The present invention further provides a method for preparing the environmental protection plastic additive, and an environmental protection plastic containing the additive. According to the present invention, when the plastic product containing the environmental protection plastic additive is burned, the concentration of the discharged toxic gas is low, air pollution can not be caused, and the biodegradation can be achieved after the burned product is buried for one year; and the environmental protection plastic additive can be formed through the ejection or extrusion technology according to the actual demand, the additive production process is simple, and the practicality is strong.

The invention provides a high-viscosity asphalt modifier and a preparation method and application thereof. The high-viscosity asphalt modifier is prepared from the following components: in parts by weight, 50-80 parts of sarin resin, 10-40 parts of POK, 0-15 parts of M-SEBS, 0-15 parts of composite organic filler, 0.1-1.5 parts of a coupling agent, 0.1-1.5 parts of an accelerator, 0.1-1 part of anantioxidant and 0-1 part of a lubricating agent, wherein the sarin resin has a melt flow rate of 1.0-5.0 g / 10 min and a Vicat softening point of 72-76 DEG C, and the POK has a number average molecular weight of 86,000-120,000 and a heat distortion temperature of 215 DEG C; and the mass of maleic anhydride in SEBS accounts for 5-15% of the total weight of M-SEBS, and the mass of M-SEBS accounts for 85-95% of the total weight of the raw materials. Since the sarin resin and POK contain aromatic hydrocarbon, alkyl groups and other polymer, strong mechanical strength and good elasticity are achieved, good solubility in asphalt is good, and the high-viscosity asphalt modifier can be thoroughly mixed with the asphalt, so that the adhesion, elasticity, heat resistance and other performance of theasphalt are improved; and the interfacial compatibility among the resin can be improved through the M-SEBS, the strength and void ratio of the asphalt mixture can be ensured, and the water permeability is improved.

The invention discloses a perylene bisimide derivative nano-material and a preparation method and application thereof, the nano-material has specific selective response to sarin poison gas, and the nano-material is of a banded nano-structure formed by self-assembly of construction molecules through pi-pi stacking; according to the nanometer material, the construction molecules are subjected to crosslinking, interconnection or polymerization to form a net structure, the interconnected network structure provides a high-speed transmission channel for electron transfer among the molecules, rapid photoinduced electron transfer is further ensured, and the detection sensitivity of the nanometer material is improved; the high fluorescence quantum yield is beneficial to further improvement of the detection sensitivity, and the lowest detection limit of sarin poison gas is greatly reduced. The nano material has no fluorescent response to phosgene, soman poison gas, tower collapse poison gas, chlorine, mustard gas and the like, has good anti-interference capability, realizes specific and high-sensitivity detection of sarin poison gas, and has good application prospects.

The invention herein provides for the detection of certain organic halogen-containing agents or toxicants such as sarin, chloropicrin, mustard gas, mustard chlorohydrin, phosgene, chlorine, soman, lewisite, diphosgene and others by, in one embodiment, first reacting the agents with superoxide free radical anion (.O{overscore (2)}) to produce light pulses which can be detected by a standard photon counter. The superoxide may be available from a dimethyl sulfoxide superoxide (.O{overscore (2)}) liquid solution, from lecithin coated beads charged with superoxide (.O{overscore (2)}) in a reaction vessel or from a quarternary ammonium ion exchange resin charged with superoxide anion (.O{overscore (2)}) in a reaction vessel.

The invention provides a fluorescent material containing one compound represented by a formula (III) shown in the specification. When the fluorescent material is in contact with chemical warfare agents such as mustard gas and sarin, the fluorescence can have an enhancement or quenching phenomenon, the concentration for detecting the chemical warfare agent vapor is in the range from a ppb level toa ppm level, and the fluorescent material has no obvious response to common interference gas such as organic solvents (thousands ppm to tens of thousands ppm). The fluorescent material provided by theinvention has strong stability, a high fluorescence quantum yield and wide application prospects; and a method for detecting the chemical warfare agents provided by the invention realizes the distinguished detection of a blister agent and a neurotoxic agent, and has very high practicability.

An apparatus for detecting a chemical agent, capable of increasing a detection speed of a chemical agent, decreasing a false alarm rate, pinning down the kind of a chemical agent, and meeting specifications for unattended continuous monitoring equipment suitable for detecting sarin or soman. This detection apparatus comprises a sample introduction unit for introducing a sample, an ionizing unit for positively ionizing the sample from the sample introduction unit, a mass spectrometer unit for analyzing ions of the sample, and a computer for analyzing data, and is best suited for identifying a dangerous substance by detecting signals peculiar to chemical agents, such as sarin or soman.

New approaches for selective detection of chemical agents such as sarin are necessary because of the high toxicity of sarin and related compounds, the potential of these compounds to be used as weapons of mass destruction, and the limitations of current detection methodologies. Herein is described an apparatus and a method for selective and amplified detection of sarin simulants deposited via an aerosol process. The simulant absorbs into a hydrogel, where it hydrolyzes upon contact with water producing elemental ions. The elemental ions are then concentrated via an ionic chemical potential gradient to a sensor, where it is detected. This technique has potential to amplify the capture efficiency of a sensor by a 1000-fold within couple of minutes.

The invention discloses a co-extrusion material production formula and a process, and relates to the technical field of composite materials. A co-extrusion material is prepared from, by weight, 50-65%of sarin resin, 25-35% of polyethylene, 3-8% of compatilizers, 2-6% of flexibilizers and 7-12% of other auxiliaries. Impurities are removed, formula weighing is performed, feeding quantity is estimated according to the volume and the feeding coefficient of a kneading machine and an internal mixer, raw materials are accurately weighed according to the feeding quantity, sequentially fed into the kneading machine and kneaded for 10-15 minutes, discharging temperature is 100-120 DEG C, mixed materials are fed into the 50L internal mixer and internally mixed for 8-10 minutes at the internal mixingtemperature of 80-100 DEG C, material discharging temperature is 140-145 DEG C, the mixed materials are extruded, granulated and fed into a double-screw extruder, and the rotating speed of a cutter of the double-screw extruder is adjusted into the granule length of 3-4mm. A finished product is low in impurity content, strict in production technology, high in product quality and free from discoloring, caking and material decomposition, and equipment cannot be damaged in the production process.

The invention discloses a nanometer material based on perylene bisimide and a preparation method and application of the nanometer material. The nanometer material has specific selective response shuttle man and is of a strip-shaped nanometer structure formed by self-assembly of construction molecules through pi-pi stacking; the structural formula of the building molecules is as follows: the nano material is of a radial network structure, and the interconnected network structure provides a high-speed transmission channel for electron transfer among molecules, so that the rapid proceeding of photoinduced electron transfer is effectively ensured; the high fluorescence quantum yield is beneficial to further improvement of the detection sensitivity, and the lowest detection limit of the soman poison gas is greatly reduced. And the nano material has no fluorescent response to phosgene, sarin poison gas, tower collapse poison gas, chlorine gas, mustard gas and the like, has good anti-interference capability, realizes detection of shuttle man specificity and high sensitivity, and has good application prospects.

The invention provides a semiconductor sensor, which comprises a sensitive material layer that includes indium oxide. The semiconductor sensor is used for quantitative determination of a sarin gas ora sarin simulation agent gas. The invention further provides a quantitative determination method for a sarin gas or a sarin simulation agent gas. The method comprises providing any kind of a semiconductor sensor; exposing the sensitive material layer of the semiconductor sensor to an atmosphere of a to-be-detected sarin gas or sarin simulation agent gas, heating the semiconductor sensor, and obtaining a first response value of the semiconductor sensor in the to-be-detected sarin gas or sarin simulation agent gas; and calculating the concentration of the to-be-detected sarin gas or sarin simulation agent gas according to the obtained first response value.

The invention belongs to the field of composite materials and especially relates to a PC / PMMA material for a suitcase shell and a preparation method thereof. The PC / PMMA material for the suitcase shell is composed of polycarbonate, polymethyl methacrylate, sarin resin, flexibilizer, dispersing agent and antioxidant, wherein the mass ratio of polycarbonate to polymethyl methacrylate to sarin resinis at (2.8-14.5):(1.2-7):1. The PC / PMMA material provided by the invention has excellent scratching resistance and toughness and meets various test requirements for the suitcase shell material.

The invention relates to a reagent and a method for detecting a nerve agent and analogues thereof, and in particular relates to compounds of formulae I and II in the specification, a detection composition or polymer film containing the compounds, a detection kit containing the composition or polymer film, a preparation method of the compounds and a method for detecting sarin and dangerous substances related with sarin, wherein the definitions of the groups in the formulae I and II are as described in the specification.

The invention provides an aluminum-plastic wood profile, comprising a wood-plastic layer and an aluminum alloy layer; the wood-plastic layer is composed of the following raw materials in parts by weight: 10-30 parts of sarin resin, 5-15 parts of plant fiber powder, wood powder 40-50 parts, 20-40 parts of polyurethane foam powder, 5-15 parts of inorganic filler, 3-10 parts of flame retardant, 1-3 parts of lubricant, 0-2 parts of antioxidant, ethylene-vinyl acetate copolymer 2-7 parts of mixture with ethylene-acrylic acid copolymer, 1-3 parts of cold resistance agent M711, 1-2 parts of light stabilizer GW-540, 5-15 parts of inorganic filler, 3-10 parts of flame retardant, 1 part of lubricant ‑5 parts, 1‑3 parts of colorant, 3‑10 parts of bentonite, 20‑40 parts of low density polyethylene. In the present invention, the wood-plastic layer and the aluminum alloy layer are used in combination, and the advantages and disadvantages of the wood-plastic layer and the aluminum alloy layer are complemented. Weather resistance, wear resistance and other properties, in the natural environment, aluminum-plastic wood profiles have good mechanical properties, are not easy to age, and have a long service life.

The invention provides a high foaming scratch-resistant polypropylene foaming material. During production, the production raw materials comprise the following components in parts by weight: 10-60 parts of polypropylene with high melt strength, 0-70 parts of co-polypropylene, 0-50 parts of low-melting homo-polypropylene, 3-20 parts of sarin resin, 0.3-2 parts of a scratch-resistant agent, 3-10 parts of grafted PP, 3-10 parts of grafted POE, 5-20 parts of MDPE, 1-10 parts of a filling master batch, 0.3-1.5 parts of a foaming agent, 0.04-0.1.5 part of white oil and 0.02-0.04 part of an antioxidant. The foaming material is a low-density polypropylene foaming sheet, and the scratch resistance of the foaming material is far higher than that of a traditional foaming material.

A fluorescence-based method for highly sensitive and selective detection of analyte molecules is proposed. The method employs the energy transfer between two or more fluorescent chromophores in a carefully selected polymer matrix. In one preferred embodiment, signal amplification has been achieved in the fluorescent sensing of dimethyl methylphosphonate (DMMP) using two dyes, 3-aminofluoranten (AM) and Nile Red (NR), in a hydrogen bond acidic polymer matrix. The selected polymer matrix quenches the fluorescence of both dyes and shifts dye emission and absorption spectra relative to more inert matrices. Upon DMMP sorption, the AM fluorescence shifts to the red at the same time the NR absorption shifts to the blue, resulting in better band overlap and increased energy transfer between chromophores. In another preferred embodiment, the sensitive material is incorporated into an optical fiber system enabling efficient excitation of the dye and collecting the fluorescent signal form the sensitive material on the remote end of the system. The proposed method can be applied to multichromophore luminescence sensor systems incorporating N-chromophores leading to N-fold signal amplification and improved selectivity. The method can be used in all applications where highly sensitive detection of basic gases, such as dimethyl methylphosphonate (DMMP), Sarin, Soman and other chemical warfare agents having basic properties, is required, including environmental monitoring, chemical industry and medicine.

The invention discloses a method for extracting banana peel from banana peel, and relates to the technical field of extraction of natural substances. The method for extracting banana peel from banana peel of the present invention comprises: take dry banana peel, add the mixed solution of methanol, acetic acid, tetrahydrofuran (THF) and water as the extraction solvent and heat to reflux; after cooling, filter to get the first filtrate and The first filter residue; add ammonium sulfate solution to the first filtrate, let stand to precipitate, filter to get the second filtrate; add absolute ethanol to the second filtrate, let stand to precipitate, filter to get the precipitate; precipitate with absolute ethanol and ether respectively Wash and serve. The method for extracting banana peel from banana peel provided by the present invention is simple, easy to implement and low in cost. It uses a composite solvent to extract banana peel, and the extraction efficiency of banana peel is high, providing a new way for the recycling of banana peel , and provide a basis for the wide application of banana peelin.