82results about How to "Reduce cancer risk" patented technology

An aerosol electronic cigarette includes a battery assembly, an atomizer assembly and a cigarette bottle assembly and also includes a shell (a) which is hollow and integrally formed. Said battery assembly connects with said atomizer assembly and both are located in said shell (a). Said cigarette bottle assembly is located in one end of the shell (a), which is detachable. Said cigarette bottle assembly fits with said atomizer assembly. Said shell (a) has through-air-inlets (a1).

The invention discloses an electronic cigarette which comprises a cigarette-like shell with a hollow cavity, an electrical source, a cigarette pellet and cigarette rod fittings. The electrical source, a pneumatic switch, a magnetostrictive vibrator and an electromagnetic induction heater are arranged in sequence inside the shell from the front end to the back end; wherein, a high frequency generator is respectively connected with the magnetostrictive vibrator, the electromagnetic induction heater and the pneumatic switch through leads. A light-emitting diode is arranged at the front end of the shell and is respectively connected with the pneumatic switch and the electric source through leads. The back end of the shell is connected with the cigarette pellet in which a tobacco solution chamber is arranged.

The invention discloses a method for inhibiting HIV-1 infectious agent from infecting primary lymphocyte by utilizing CRISPR/Cas9 and relates to genetic engineering and an anti-virus infection technology. According to the method, by utilizing the latest CRISPR/Cas9 nuclease system, through the combination of Ad5F35 mosaic type adenovirus vectors of efficient targeted primary T lymphocyte, by editing CCR5 expression of human CD4+T lymphocyte, HIV-1 virus infection is effectively inhibited. According to the method, the CRISPR/Cas9 system is packaged by utilizing the Ad5F35 type adenovirus vectors, the advantages of the CRISPR/Cas9 system and the Ad5F35 type adenovirus vectors are organically combined, the novel method for resisting HIV-1 virus infection is provided, and the method has the potential for being applied for HIV-1 gene treatment research; meanwhile, the Ad5F35 type adenovirus vectors carrying with the CRISPR/Cas9 system can be used for conducting targeted editing to other genes in the primary lymphocyte or gene editing research of other hematopoietic system cells.

The invention discloses a method for extracting betel nut biotin form fresh betel nuts. The method comprises the steps as follows: the fresh betel nuts are sorted, cleaned and smashed, water is added, 0.1%-1% of cellulose is added for biological splitting, the pH is adjusted to 2-7, the mixture is kept standing for 0.5-4 h, and plate filtration is performed, so that an extraction solution is obtained; the extraction solution is subjected to high-speed centrifugal separation (3000-30000 r min), and impurities and macromolecular substances are removed, so that a solution is obtained; the solution is subjected to vacuum continuous dehydration at a temperature below 60 DEG C, so that a solid substance is obtained; and the solid substance is smashed, subjected to 30-120 meshes and examined, so that the betel nut biotin is obtained. According to the method, the operation is simple, the technology temperature is below 60 DEG C, alkaloid and general flavone are taken as quality control indexes, beneficial ingredients of the betel nuts are fully extracted, the betel nut biotin extraction rate is high, and the method is suitable for industrial production. No furnace is needed, no organic solvent is related, and no waste liquid or waste gas is discharged. Production slag is betel nut fibers which are precious raw materials for a high-grade fiber board and activated carbon.

The invention discloses a method for detecting water toxicity by using a biologic fish toxicity test. The method comprises the steps of: breeding medakas; preparing Cr6+ solutions at different concentrations; performing the biologic fish toxicity test by taking standard water as a control group and Cr6+ solutions at different concentrations as test groups; detecting death rates of medakas after 24 hours, 48 hours, 78 hours and 96 hours; drawing a standard curve of Cr6+ to the death rate; performing the biologic fish toxicity test by using a water sample to be detected and setting up a standard water control group; detecting the death rates of medakas after 24 hours, 48 hours, 78 hours and 96 hours; substituting the corresponding standard curve; and representing the water toxicity of the water sample with Cr6+ concentration. Through the standard curve of Cr6+ to the death rate, the water toxicity is quantitatively evaluated and the water pollution condition can be judged; the method provides technical supports for sudden water pollution and a water treatment technology of a water plant; and the risk of causing human cancers by exposure of drinking water is reduced.

The invention discloses an electronic cigarette which comprises an atomizer (2), a battery component (1) and a cigarette container (3). The atomizer (2) is connected with the battery component (1) in a magnetic attracting mode. The electronic cigarette can overcome the defect that dismantling is not convenient in the prior art. The invention further provides an electronic cigarette containing cigarette liquid with eaglewood essential oil, a user can feel fragrance of the eaglewood essential oil given out by the electronic cigarette, and the effect of calming the nerves is achieved.

The invention discloses a method for preparing edible salt added with bamboo ingredients. The method comprises the following steps: drying commercial salt, adding a certain amount of a bamboo flavones extract prepared by processing bamboo powder, a bamboo beverage, bamboo juice and a water extracting solution or a concentrated solution of bamboo leaves into the salt, uniformly mixing, adding a certain amount of a flavor enhancer, namely 5'-disodium guanylate as well as dextrin and seasonings, finally adding a proper amount of an anti-caking agent into mixed salt, and performing subsequent operations of adding iodine, weighing, packaging and the like according to the needs. The method is simple in process and low in cost, and meets laws and regulations on food safety and related provisions in an ISO9000 quality management system; the produced bamboo-containing edible salt can be used for reducing intake of people on sodium chloride while ensuring a seasoning function; the added bamboos contain various chemical ingredients beneficial to a human body.

The invention relates to a river basin water body particular pollutant screening method based on carcinogenic risks and an application thereof and belongs to the field of environmental sciences and health risk assessments. According to the river basin water body particular pollutant screening method based on the carcinogenic risks, pollutants in a plurality of water environment pollutant lists serve as candidate particular pollutants, a two-stage factor comprehensive scoring method is utilized to comprehensively take information of pollutant carcinogenic grade, environmental pollution status, emission intensity of pollution sources and the like into consideration, quantitative scoring is performed on 10 factors such as times of ultra standard of surface water, surface water over standard rate, overall detection rate of the pollutants and environmental medium universal detection rate of the pollutants, screening is performed according to total scores and a final particular pollutant list is determined. The river basin water body particular pollutant screening method based on the carcinogenic risks provides reference pollutant objects for environment management departments to take targeted treatment measures and carry out targeted environmental health monitoring work and has significant scientific significance and a practical value for reducing environmental carcinogenic risks of population in an object region.

The invention relates to a method for evaluating water quality health risk with a chromium ion as a standard toxic substance, comprising the following steps: a toxicity test is conducted on biological fish, if dead fish occurs in 96h, Cr<6+> concentration is used for representing water quality toxicity, and if dead fish does not occur, a luminescent bacteria toxicity test is conducted; if the luminescent inhibition rate is higher than 40%, the Cr<6+> concentration is used for representing the water quality toxicity, and if the luminescent inhibition rate is lower than 40%, an SOS/umu test is conducted; if a test result is positive reaction, the Cr<6+> concentration is used for representing the water quality toxicity, and if a test result is negative reaction, a broad bean root tip micronucleus test is conducted; and if a micronucleus permillage ratio is more than 1.5, the Cr<6+> concentration is used for representing the water quality toxicity, and if the micronucleus permillage ratio is less than 1.5, a unicellular gel electrophoresis test is conducted and the Cr<6+> concentration is used for representing the water quality toxicity. In the invention, the steps are closely related to each other so that both the low pollutant content and the high pollutant content in water quality can be detected, the detection time is shorter, the result is accurate and easy to unify, and quantification evaluation of the water quality toxicity can be realized.

The invention discloses a method for manufacturing fireproof flame-retardation wallpaper, belonging to the technical field of manufacturing functional building decoration materials. The manufacturing method of the invention is characterized in that: (1) the wallpaper is produced by the known rolling process; (2) the wallpaper lamination composition is made by a protective layer and a paper layer according to a top-to-bottom order, with the two layers being bound via binder; (3) the pattern of the wallpaper is directly printed on the paper layer; and (4) both the protective layer and the paper layer of the wallpaper are flame-retardation layer, with different flame-retardation principles. The fireproof flame-retardation wallpaper of the invention features simple producing process and lamination composition, low production cost, and abundant and brilliant design and color, and is provided with great fireproof flame-retardation performance. A burning test proves that the flame-resistance performance of the wallpaper reaches B1 level (GB8624-2006).

The invention discloses a water quality genotoxicity detection method based on a semiconductor opening switch (SOS) effect of recombinant Escherichia coli. The method comprises the following steps of: recovering, activating and culturing recombinant Escherichia coli storage to obtain Escherichia coli detection solution; contacting a water sample to be measured with the detection solution, and simultaneously setting a contrast; centrifuging, ultrasonically disintegrating and performing other post-treatment on the contacted detection solution, and detecting a fluorescence intensity ratio of the water sample to be measured; measuring a fluorescence intensity ratio of the Cr6+ solution with different concentrations, which is contacted with the detection solution by using the same method; drawing a standard curve between the fluorescence intensity ratio and the Cr6+ concentration, and substituting the fluorescence intensity ratio of the water sample to represent the water quality toxicity of the water sample through the Cr6+ concentration. The method has no pathogenic risk, is easy and convenient to culture and operate, high in detection sensitivity and low in cost; the final result is represented by Cr6+ equivalent concentration, and can be compared with results of other biological detection methods; and the method is suitable for rapidly detecting genotoxicity of an environmental sample.

The invention relates to a method for controlling the formation of iodotrihalomethanes in drinking water, comprising the following steps: (1) adjusting the pH value of the water to be treated to pH≤9, then adding potassium ferrate to the water to be treated, stirring Make it mix and react; (2) the solution after the reaction is filtered by natural sedimentation and microfiltration membrane to obtain iodine-free water; (3) add disinfectant to the iodine-free water gained in step (2) for disinfection , that is, drinking water. Compared with the prior art, the present invention controls the generation risk of I-THMs in drinking water without complicated and lengthy operation process, and can avoid the formation of I-THMs at acidic and neutral pH, and can be used respectively at pH=9. The I‑THMs produced by subsequent chlorination/chloramination were reduced by 94.5% and 84.1%, which can effectively reduce the carcinogenic risk of by-products caused by the use of chlorine and chloramine disinfection.

The invention is to methods for screening women for breast cancer and precancer by determining a level of an estrogen-related marker. The invention further provides methods of treating such patients identified as having one or more abnormal ductal epithelial cells and an estrogen-related marker. The invention provides methods for screening patient for hormone replacement therapy (HRT), and of monitoring such patients once they begin HRT. The invention provides methods of treating peri-, menopausal or postmenopausal women for both cancer risk reduction and menopausal symptoms (or other conditions related to lowered systemic estrogen levels). The invention also provides kits for the screening, monitoring, and treating methods described.

An electronic instrument with a warning function for cancers and diseases is composed of a control unit, a microprocessor, a measuring unit, zero or one or more warning units, zero or one or more display units, zero or one or more key input units, a sensor unit, a storage and a power supply unit. Comparison is conducted between the microprocessor of the control unit and data preset by the storage, and when a person is in a calm stage such as a rest or sleep state, whether the data of the electronic instrument including but not limited to differences of pulse frequency or blood pressure or blood glucose or heart rate or respiratory rate or temperature value or amount of exercise in movement stage before and after unit time and cancer risk values corresponding to the data reach preset limiting values or not is judged; when the data reach the preset limiting values, the electronic instrument directly displays risk values through the display units and sends warning signals such as red light or warning sound through the warning units.

The invention discloses fruit and vegetable chocolate and a preparation method thereof. The fruit and vegetable chocolate comprises the following raw materials in parts by weight: 10-20 parts of lemon, 10-20 parts of red dates, 5-10 parts of spinach, 5-10 parts of day-lily buds, 35-45 parts of cocoa butter, 15-25 parts of cocoa butter substitute, 1-3 parts of maltodextrin, 1-3 parts of lecithin and 1-2 parts of salt. The preparation method comprises the following steps: cleaning lemon and red dates, draining off, and smashing to obtain a smashed mixture A; cleaning spinach and day-lily buds, drying, and smashing to obtain a smashed mixture B; mixing cocoa butter, cocoa butter substitute, maltodextrin, lecithin and salt, and carrying out precision grinding to prepare a chocolate base material; adding the smashed mixture A and the smashed mixture B; carrying out precision grinding; adjusting the temperature and heating; pouring; naturally cooling; demoulding; packaging to obtain the fruit and vegetable chocolate. According to the preparation method, during chocolate preparation, lemon, red dates, spinach and day-lily buds are added, and the original nutritional components of various fruit and vegetables are remained as the raw material, so that the chocolate is low in calories, abundant in nutrition, delicate, smooth and various in taste, and has the efficacies of replenishing blood, whitening and clearing heat.

Provided is a marker gene capable of detecting the persistence/admixture of undifferentiated cells in a differentiated cell population. Undifferentiated cells present in a differentiated cell population are detected by using at least one gene selected from the group consisting of ESRG, VSNL1, THY1, SFRP2, SPP1, USP44, and CNMD as an undifferentiation marker. A method for detecting undifferentiatedcells, a method of use as an undifferentiation marker, and an undifferentiated cell detection kit. Also provided is a method for selecting an undifferentiated cell line.

The invention discloses a method for detecting water quality genetic toxicity by a broad bean root tip micronucleus test, comprising the following steps of: soaking seeds for Songrun green-peel beans, accelerating germination, and obtaining a seed of which the primary root has the length of 1.5-2cm; respectively processing seed root tips by Cr6+ solutions of different concentrations; repairing, fixing and dyeing root tip cells; carrying out microscopic examination to the root tips, and calculating the permillage of cell micronucleus processed by the Cr6+ solutions of different concentrations; drawing the standard curve for the permillage of cell micronucleus relative to Cr6+ concentration; then, measuring the permillage of cell micronucleus of a water sample to be detected with the same method; and substituting the standard curve to obtain the water quality toxicity of the water sample to be detected, which is represented by Cr6+ concentration. In the method, Cr6+ is selected as the standard toxic substance, and the quantitative evaluation of the water quality toxicity is realized by the standard curve of the micronucleus permillage relative to Cr+6. The genetic toxicity of the water quality can be more intuitively and accurately detected by the method, results are easy to unify, and the repeatability is good.

The invention relates to a raw material dry-state proportion and a preparation vulcanization process of latex for producing low-nitrosamine condom. The dry-state proportion comprises 0.9-1 part of sulfur, 0.5-0.7 part of ZnO, 0.3-0.6 part of environment-friendly type vulcanization accelerator A, 0-0.3 part of environment-friendly type vulcanization accelerator B, 0.6-1 part of an anti-aging agent, 0.08 part of sodium methylene dinaphthyl sulfonate, 0.25 part of casein, 0.08 part of KOH and 100 parts of natural latex. The vulcanization process comprises ten steps, and can be used for preparation vulcanization production of latex for producing low-nitrosamine condom. In the natural latex rubber condom produced by the latex, the nitrosamine residue, namely the content of N-nitrosamine is smaller than 0.01mg/kg or is not basically detected, therefore, the use is safe and reliable and the carcinogenesis risk is greatly reduced.

The invention provides a drug carrying microsphere with a tumor chemoradiotherapy synergistic sensitization effect and a preparation method thereof. The method comprises the following steps: carryingout amidation reaction on a polyacrylic acid PAA and polyethylene glycol PEG with two end amination under action of a first activating agent to obtain a PAA-PEG block polymer; carrying out esterification reaction on the PAA-PEG block polymer and 1-ethoxy-2-methyl-5-nitroimidazole MN under the action of a second activating agent to obtain a MN-PAA-PEG polymer microsphere; and carrying out self-assembly on the MN-PAA-PEG polymer and doxorubicin DOX to obtain a doxorubicin-loaded DOX/MN-PAA-PEG microsphere. The drug carrying microsphere can be obtained only through three steps of an acylation reaction, an esterification reaction and self-assembly, the method has characteristics of a simple process, mild reaction conditions and easiness in operation.