142 results about "Environmental agent" patented technology

A method of sensing an environmental agent, comprising obtaining a sample from the environment and transferring the sample into the working fluid for dispensation to a detection module. The sample and working fluid mixture is filtered through a porous polymer Bragg grating. By comparing the refractive index of the grating with the mixture to the refractive index of a grating without the sample, a difference in the refractive index aids in the identification of a hazardous agent in the environment. The sensor also acts as a chemical filter by trapping specific target agents by a highly specific reaction with a conjugate molecule. Recirculation of the working fluid throughout the system provides a sensor that is “always on.”

The invention relates to compositions and methods of constructs comprising a SIRP-α polypeptide, including SIRP-α variants. The constructs may be engineered in a variety of ways to respond to environmental factors, such as pH, hypoxia, and/or the presence of tumor-associated enzymes or tumor-associated antigens. The constructs of the invention may be used to treat various diseases, such as cancer, preferably solid tumor or hematological cancer.

A cosmetic treatment method, and a device therefor, are provided that allow for cosmetic treatment of cosmetic disorders, caused by chronological age, environmental factors, changes in physiological functions of skin, such as psoriasis, dermatitis, acne, cellulites, and viral and/or bacteriological attacks. The device comprises a nitric oxide (NO) eluting polymer arranged to contact the area to be cosmetically treated, such that a cosmetic dose of nitric oxide is eluted from said nitric oxide eluting polymer to said area. The nitric oxide (NO) eluting polymer is integrated with a carrier material, such that said carrier material, in use, regulates and controls the elution of said cosmetic dosage of nitric oxide (NO). Furthermore, a manufacturing method for said device is provided.

A device is provided for determining the degree of the presence of an unwanted environmental agent. The apparatus comprises a device (30, 40) having first (31, 41) and second (33, 46) conducting layers with alternatively interdigitized fingers (34, 36, 42, 43, 44, 47, 48, 49) coupled to a nano-structure (32, 45) having a high aspect ratio, wherein sections (35, 37, 50, 51, 52, 53, 54) of the nano-structure between each of the fingers are substantially equal in length. Circuitry (62) coupled to the first and second conducting layers determines the occurrence of a change in a material characteristic of the sections of the nano-structure.

A portable gas chromatography system and method of use. The portable gas chromatograph may be used to accurately and rapidly detect low-level concentrations of chemicals, such as fixed gases, volatilized liquid samples, or toxic chemicals and transmit to a user data relating to the presence and identity of such. The portable gas chromatograph uses an onboard vacuum source to pull samples into and through the system and thus does not require the use of a carrier gas. Further, the system comprises a solenoid valve for capturing the sample and may include a short porous layer open tubular separation column, and a thermal conductivity detector. Overall size and weight of the system is small enough for a user to carry. The method of operation of the gas chromatograph includes taking rapid successive samples and analyzing the data outputs using Fourier transform techniques. Such analysis allows real-time data updates and rapid detection of hazardous environmental agents.

The invention discloses a specific fluorescent probe for identifying hydrazine and an application thereof, belonging to the field of fine chemical engineering. The fluorescent probe is a 4-trifluoromethyl-7-aminocoumarin derivative, and is prepared by steps of putting 4-trifluoromethyl-7-aminocoumarin, phthalic anhydride and sodium acetate into a reaction bottle in proportion, and performing backflow by adding acetic acid. The fluorescent probe and the corresponding hydrazine content detection process cannot be interfered by biological system matrixes and impurities, so the fluorescent probe can be used for quantitative measurement of the hydrazine content in various biological systems. The probe has high specificity, and can be subjected to hydrolysis after specifically reacting with hydrazine; a hydrolysate has good fluorescence characteristics. Raw materials are cheap and easily available, can be obtained through chemical synthesis, and synthesis process is simple and feasible; the probe has high sensitivity, is suitable for detecting the hydrazine content in cells, and can be used for measuring the hydrazine content by drawing a standard curve. The probe is a ratio type probe, and effectively avoids the influences of non-uniform probe distribution, environmental factors, actuators and the like on the measurement results.

The invention relates to a hollow microcapsule, an acidic or alkaline controlled-release microcapsule and preparation methods thereof, belonging to the field of biological agents. The preparation method of the hollow microcapsule comprises the following steps of: preparing a microcapsule through a layer-by-layer self-assembly method by taking calcium carbonate as a core and selecting polyelectrolyte cation and anion with opposite charges under a preparation condition; and then removing the core to obtain the hollow microcapsule. The wall of the hollow microcapsule is formed by alternating PAH/PSS (Polypropylene Amine hydrochloride/Poly Sodium Styrenesulfonate), and the hollow microcapsule can loaded with Cry protoxins of bacillus thuringiensis insecticidal crystal proteins under an acidic condition so as to obtain a microcapsule dosage form with release controlled under an alkaline condition. The microcapsule dosage form keeps the insecticidal activity of the cry protoxins, can assist the cry protoxins to resist the influence of certain environmental factors, also enables the insecticidal proteins to be specifically released in an alkaline environment of an insect midgut and keep stable in a general environment and plays an important role in the actual application of the Bt (Bacillus thuringiensis) insecticidal proteins on pest control.

The present invention relates to methods and apparatus to monitor and potentially prevent occurrences of lung cancer in patients. The invention includes apparatus and methods to determine a patient's pre-disposition or propensity to acquire lung cancer. Also included are apparatus and methods to monitor for patient biomarkers and for environmental agents, to warn and to take action to reduce exposure to environmental agents and to increase patient screening for the occurrence of lung cancer.

The invention provides an intelligent control box for culturing edible fungi. The intelligent control box comprises a shell, wherein a microcontroller is arranged inside the shell; the surface of the shell is provided with a display screen; a detection device for monitoring environmental factors is arranged at the top end of the shell; the output end of the detection device is electrically connected with the microcontroller; the output end of the microcontroller is electrically connected with the display screen; the output end of the microcontroller is electrically connected with and used for driving a control equipment heater, a humidifier, illuminating equipment and a fan respectively. According to the intelligent control box, various environmental factors in the culturing process of the edible fungi are detected and are compared with set environmental factors, and each piece of equipment is automatically controlled to adjust, so that automatic control is realized, the yield and quality of the edible fungi are increased and improved, and the labor cost is reduced. Moreover, a system can be controlled online in a centralized way by connecting a communication interface with a computer for networking, the labor force is saved, the efficiency is increased, and the automation level is raised.

The invention discloses a safety monitoring and early warning system applied to hazardous chemical substance production. The method comprises the steps of adding, deleting, modifying and checking digital information of four kinds of dangerous and harmful factors such as human factors, object factors, environment factors and management factors in the hazardous chemical substance production process,and adding, deleting, modifying and checking digital information of six kinds of safety daily management such as a safety check list, a safety check plan, hidden danger checking, hazardous operationapproval, an emergency plan and emergency resources. At present, systems related to safety production and safety of hazardous chemical substances are independently dispersed; according to the system,a production line process control system (PCS), a safety interlocking system (SIS), a video monitoring system, a fire-fighting deluge system, a manufacturing execution system (MES) and the like are integrated; six types of data such as process technology, equipment health, production materials, personnel information, operation environment and emergency resources are dynamically collected and analyzed, an enterprise safety production multi-dimensional database is established, and integration and information fusion sharing of multi-source safety data are achieved.

A method for producing bacteria belonging to the genus Bifidobacterium having excellent viability even under various conditions with different environmental factors, novel bacteria belonging to the genus Bifidobacterium obtained by the method, and a method for detecting the bacteria are provided. By subculturing and storing bacteria belonging to the genus Bifidobacterium alternately in systems under conditions with different environmental factors, the bacteria belonging to the genus Bifidobacterium exhibiting excellent viability under all the conditions used for the alternate subculturing and storing can be produced.

The invention provides a molecular marker for assistant breeding of a bacterial blight resistant gene Xa21. The molecular marker is an SNP marker RSXA211110 co-separated with the rice bacterial blight resistant gene Xa21, and the SNP marker detects the 20894905-position base of chromosome 11 of rice; primers developed on the basis of aKASPtechnology comprise a specific primer X, a specific primer Y and a universal primer C, and sequences of the primers are shown as SEQ ID NO:1-3. The invention further provides an application of the SNP marker RSXA211110 to assistant breeding of the bacterial blight resistant gene Xa21. The application has the advantages of being simple to operate, low in cost and short in period, the marker is good in stability and is not affected by other gene effects and environmental factors, selection in early generation can be realized, the breeding period is shortened, the breeding efficiency is increased, and the molecular marker has great significance in improvement of bacterial blight resistant rice breeds and is suitable for assistant selective breeding of the gene Xa21.

The present invention includes compositions and methods for detection of the effectiveness of a substance for cleaning that include an electrophilic dye, wherein the electrophilic dye is colorless before exposure to a nucleophilic agent, and an nucleophilic agent, wherein the electrophilic dye, the nucleophilic agent or both are encapsulated and wherein exposure to one or more cognate target or condition triggers the release of the electrophilic dye, the nucleophilic agent or both from encapsulation. It also includes compositions and methods for detection of the effectiveness of a substance for cleaning by a recognitive dye, wherein the dye is colorless before exposure to its cognate target, changes color upon exposure to its cognate target and reverts to being colorless after a predetermined period of time by exposure to one or more environmental agents.

The invention relates to a multi-Agent technology-based and information fusion-based building heating energy saving system and a multi-Agent technology-based and information fusion-based building heating energy saving method. The method and the system realize energy saving by monitoring the situation whether personnel exist in a building, and correspondingly controlling central heating valves. The method comprises the following steps that: management Agents fuse information uploaded by all the room Agents, wherein the information comprises personal Agent personnel identity information, personnel existing situation information detected by a pyroelectric infrared sensor and personnel statistics Agent information for judging whether the personnel exist in the building. A personal Agent identifies personnel identity; an environmental Agent integrates the information judged by the pyroelectric infrared sensor whether the personnel exist and can receive personal Agent information; personnel statistics Agents count the number of persons coming in and going out the building, which are room Agents having special functions; and the management Agents are connected with a heat supply network monitoring control system, and perform energy saving control on a building heating system according to the situation whether personnel exist. All the environmental Agents upload information to the room Agents through wireless networks, and the room Agents transmit the information to the management Agents through Ethernet.

The invention discloses a method for excluding background interference of fruit and vegetable in rapid detection of fruit and vegetable pesticide residues and the application thereof in the rapid detection of fruit and vegetable pesticide residues. The method for excluding background interference of fruit and vegetable in rapid detection of fruit and vegetable pesticide residues drains a colored fruit and vegetable sample liquid away after an enzyme inhibition reaction, so the colored fruit and vegetable sample liquid is not allowed to enter a color reaction system in the rapid detection, thus excluding the interference from fruit and vegetable background color for final detection results. As for the application of the method in the rapid detection of fruit and vegetable pesticide residues, an enzyme inhibit reaction, and an enzyme catalyzed substrate hydrolysis reaction are both conducted in a same closed reactor, so the impacts of environmental factor changes are also controlled at the lowest limit, making the detection results be relatively more accurate.

The invention relates to a vitamin D and calcium-containing microemulsion as well as a preparation method and an application thereof. The microemulsion comprises the following components in percentage by weight: 0.0005-0.5% of vitamin D, 1.0-10.0% of calcium source, 0.5-3% of emulsifier and 1.0-10.0% of vegetable oil. The microemulsion is less in emulsifier dosage, simple in preparation method, high in drug-loading rate, uniform in particle dispersion and good in stability and has the advantages that the particle size reaches nanometer scale; the vitamin D can be well protected from the influence of environmental factors and oxidation products harmful to the human health cannot be produced; and the bioavailability is increased at the same time.

The invention belongs to the technical field of biosensors, and discloses a preparation method of an in-situ ratio photoelectrochemical immunosensor which is applied to detection of Cry1Ab protein in transgenic crops. Au NRs and MB are used as double sensitizers to realize double amplification of PEC signals. On the one hand, Au NRs modified CdTe QDs with an SPR effect is used as a photoelectric layer, so that initial signal amplification is realized; on the other hand, MB serving as a PEC signal enhancer is embedded into dsDNA, and secondary signal amplification is achieved. The concentration of Cry1Ab is quantitatively detected by taking the light current after the target object is added and the light current generated by the Ab2-CdSe QDs-dsDNA sensitized by the MB as a specific value respectively. The two signals are acquired at the same electrode and are mutually referenced, so that the interference of a solution matrix and environmental factors on the electrode is effectively reduced. The detection range of the photoelectrochemical sensor is 0.01-100 ng.mL <-1 >, and the detection limit is as low as 1.4 pg.mL <-1 >. The in-situ ratio PEC sensor constructed by the invention has good stability, selectivity and reproducibility, and realizes sensitive detection of Cry1Ab protein in transgenic crops.

The invention discloses a method for identifying and evaluating an environmental risk source. The method comprises the following steps: S1, initializing a software program system; S2, determining an identification range of environmental factors; S3, determining an identification range of the danger source and the risk factor; S4, automatically identifying the risk source on site; S5, registering the identified environmental factors, danger sources and risk factors in an environmental factor identification and evaluation table and a danger source identification and evaluation table, and determining hazards and influences thereof; establishing a discrimination criterion side; evaluating hazards and influences; recording important hazards and influences establishing detailed targets and expression criteria; determining and evaluating risk control measures. By implementing the selected risk control measures, the method can perform corresponding identification and formulate the control measures according to different environmental factors and hazard source factors, so that the evaluation efficiency and accuracy are improved.

The invention relates to a rumen protection schizochytrium limacinum powder. The rumen protection schizochytrium limacinum powder comprises a core material, an inner layer coating film for wrapping the core material and an outer layer coating film for wrapping the inner layer coating film, wherein the core material comprises schizochytrium limacinum powder; the inner layer coating film comprises hydrophobic beeswax and an antioxidant; and the outer layer coating film comprises glycerol monoacetate and a film forming material. The invention also provides a preparation method. According to the rumen protection schizochytrium limacinum powder and the preparation method thereof provided by the invention, double-layer coating treatment is performed, so that the rumen bypass rate of the schizochytrium limacinum powder in rumen is remarkably increased, and it is ensured that enteric coating substances are disintegrated in intestinal tracts after the schizochytrium limacinum powder enters theintestinal tracts, and therefore effective substances (DHA) in the schizochytrium limacinum powder can be released in the intestinal tracts and absorbed and converted by organisms; the effective utilization rate of te effective substances (DHA) is obviously improved; moreover, the antioxidant is added into the inner layer coating film, so that effective substances (DHA) in the schizochytrium limacinum powder are not easily influenced by environmental factors such as light, heat and oxygen, and the stability of the effective substances in storage and use can be ensured.

The invention discloses a method for determining correlation between single nucleotide polymorphisms rs4840568 and rs13277113 of Han people in Chinese Mainland and systemic lupus erythematosus (SLE). The method comprises that through a non-labeled probe high-resolution solubility curve method, a SLE patient is subjected to genetic typing so that the correlation between single nucleotide polymorphisms rs4840568 and rs13277113 of Han people in Chinese Mainland and SLE is determined. At present, it is proved that environmental factors and gene factors produce important effects in SLE generation and development and thus a research result obtained by the method provides a theoretical basis for in-depth knowledge of SLE diseases.