17 results about "Carcinogen" patented technology

The present disclosure relates to a filter for a smoking device, such as, but not limited to, a water pipe, or a cigarette, such as, but not limited to, a cannabis cigarette. The filter includes a body that is positionable over a mouthpiece of the smoking device, to filter impurities from smoke drawn therethrough, and a base that secures the body over the mouthpiece such that smoke is drawn therethrough, prior to inhalation by a user. The body can include one of more filtration layers, such as a first layer formed from a material selected to filter carcinogens and other impurities from the smoke prior to inhalation, and a second layer formed from a material selected to minimize or prevent the transmission of bacteria, viruses, or other contagions from a user's mouth to the smoking device. Each of the filtration layers can also be formed from one or more materials.

1. The name of the design product: portable bacterial toxin detection equipment. 2. The use of the design product: portable equipment for bacterial, toxin, and carcinogen detection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The invention discloses an activity detection method of formamide pyrimidine-DNA (deoxyribonucleic acid) glycosylase, which comprises the following steps: providing a double-chain probe which comprises two complementary single-chain probes containing 8-oxoG (8-oxoG) modification sites; uniformly mixing the Fpg enzyme, the double-stranded probe, a buffer solution and water to form a mixed system; carrying out PCR (Polymerase Chain Reaction) on the mixed system, and cutting the double-stranded probe containing the 8-oxoG modification site by using Fpg enzyme to obtain a longer and shorter fragment sample; performing electrophoresis on the fragment sample by using non-denaturing polyacrylamide gel; the non-denaturing polyacrylamide gel obtained after electrophoresis is completed is subjected to vibration dyeing, and a dyeing result is photographed so as to detect the activity of the Fpg enzyme. Compared with the prior art, the method is relatively simple and easy to operate, the reagent cost is relatively low, and the experimental result is sensitive and easy to observe; no radioactive and cancerogenic substance pollution exists, and the method is environment-friendly.

This invention provides an alkaline bottle cleaner, its preparation method, and its application. The alkaline bottle cleaner comprises 16-22 wt.% sodium hydroxide, 47-66 wt.% sodium metasilicate pentahydrate, 3-6 wt.% dispersant, 8-12 wt.% alkyl glycoside quaternary ammonium salt, 4-8 wt.% ethylene glycol monophenyl ether, and 3-10 wt.% additives. This alkaline bottle cleaner has strong cleaning and decontamination capabilities, can peel off labels and markings in one piece, and does not affect the cleanliness and transparency of the bottle after cleaning. It produces no phosphates or carcinogens, meeting environmental protection requirements.

The invention discloses a VOC dynamic release test system for automobile interior parts, which relates to the field of VOC testing technology and includes a test chamber, an air path cleaning module, an environmental control unit, an analysis sampling unit and a risk assessment unit. The invention simulates the use of automobile interior parts in different environments through the environmental control unit, so that the test results are closer to the actual situation. The multi-point sampling of the analysis sampling unit can more comprehensively reflect the distribution of VOC in the test chamber, analyze the types of VOC in the collected air samples, determine the known carcinogens, and further accurately determine their contents. At the same time, unknown VOC components are screened and identified to discover potential new carcinogens and unknown compounds with potential carcinogenic risks, prevent the occurrence of unknown carcinogens from affecting the accuracy of the test results, obtain the exposure concentration of carcinogens, calculate the human carcinogenic risk value under different exposure concentrations, and conduct risk level assessment.

The genome of cancer cells has somatic mutations imprinted by the activity of various mutation processes. Most single base substitutions, as well as small insertions and deletions (indels), are scattered independently across the genomic landscape, but a subset of substitutions and indels tend to cluster together. This clustering is due, among others, to a combination of heterogeneous mutation rates across the genomic landscape, biophysical characteristics of exogenous carcinogens, dysregulation of endogenous processes, and the occurrence of larger events related to genomic instability. Disclosed herein are diagnostic and therapeutic methods that utilize clustered mutations in one or more genes in a sample isolated from a subject.

The present disclosure relates to a filter for a smoking device, such as, but not limited to, a water pipe. The filter includes a body that is positionable over a mouthpiece of the smoking device, to filter impurities from smoke drawn therethrough, and a base that secures the body over the mouthpiece such that smoke is drawn therethrough, prior to inhalation by a user. The body can include one of more filtration layers, such as a first layer formed from a material selected to filter carcinogens and other impurities from the smoke prior to inhalation, and a second layer formed from a material selected to minimize or prevent the transmission of bacteria, viruses, or other contagions from a user's mouth to the smoking device. Each of the filtration layers can also be formed from one or more materials.

The safety of a gene therapy vector or a cell modified by the vector is assessed. A population of genetically modified test cells (18) that have been transfected or infected with a vector carrying exogenous genetic material is exposed to a carcinogen (20). The modified test cells (18) are then grown for a period of time sufficient to produce immortal cell lines. Survival of the modified test cells (18) is then compared with at least one control (C1-C5) to determine whether the vector contributes to carcinogenicity.

The present invention belongs to the field of geological technology, especially a safe and efficient heavy mineral sorting and identification method, comprising the following steps: S1: the samples collected in the field are first roughly washed with clean water to wash away most of the mud attached to the sample surface, and the washed samples are dried at a temperature not exceeding 60°C; S2: 2g of Biao Le epoxy resin is weighed and poured into a mold, and 0.5-0.7g of the dried sample is poured into the Biao Le epoxy resin, and stirred while pouring. The present invention uses water and alcohol to replace the toxic tribromoform heavy liquid, avoids the use of carcinogens, increases the safety in the heavy mineral analysis process, is convenient for large-scale experimental promotion, and TIMA is an instrument that automatically scans and identifies minerals, mainly based on the brightness of the energy spectrum line and the backscattering diagram, and can accurately determine the type of mineral by comparing with the standard sample data under the same test conditions, completely excludes human factors interference during data acquisition, and the data quality is guaranteed, and a large amount of heavy mineral geological information can be obtained.

The present invention relates to a bone cement injection device and, more specifically, to a bone cement injection device comprising: a bone cement injection tool; and a syringe for injecting bone cement. The syringe for bone cement injection of the present invention uses polyphenylsulfone as a main component such that even when filled with bone cement used in bone-related surgery, the syringe does not undergo deformation and does not release carcinogens, thereby enabling safer use. In addition, the scale of the syringe for bone cement injection of the present invention is displayed as an engraved marking rather than with conventional xylene dye, such that the scale is not erased by organic solvents that dissolve bone cement and does not cause carcinogens, thereby providing a safe syringe for bone cement injection.

The application discloses a kettle with purification function and a use method thereof. The kettle comprises a heating kettle and a filter kettle communicated with the heating kettle through a water inlet pipe. A main heater is arranged at the bottom of the heating kettle. A porous boiling stone is arranged at the bottom of the heating kettle. A steam outlet is arranged at the top of the heating kettle, which is used for increasing bubbles and improving the removal rate of residual chlorine. The main heater is connected with the output end of a controller. The input end of the controller is connected with a timer and a temperature sensor for collecting the water temperature in the heating kettle. The controller is used for controlling the main heater to continuously heat for a set time after boiling, and then controlling the main heater to work intermittently, so that the water temperature in the heating kettle is kept in a set temperature range. The kettle with purification function and the use method thereof are used for reacting with natural organic matters in raw water, removing chlorine and removing carcinogenic substances (trihalomethane and trihalomethane) generated in the water purification process, which is more beneficial to the health of human bodies.

The present application aims to solve the poor flowability of existing nicotinamide mononucleotide (NMN) single material flow, which leads to poor flowability, uneven mixing and poor content uniformity during preparation of NMN preparation product, and provides a safe and good flowability nicotinamide mononucleotide-proline co-crystal preparation method, the co-crystal uses Cu-Ka radiation, and the X-ray powder diffraction expressed by 2θ angle has diffraction peaks at 5.5±0.2° and 16.8±0.2°, the co-crystal has good bulk density and flowability, can realize direct tabletting or filling capsule operation of powder, the product weight difference meets the requirements of pharmacopoeia, and the operation is simple, more suitable for commercial production, at the same time, the natural amino acid-proline is used as a co-crystal former, which is safer and more reliable than the existing technology disclosed isoniazid (WHO is listed as a class 3 carcinogen).

This invention aims to solve the problems of poor flowability of existing nicotinamide mononucleotide (NMN) single material, leading to poor flowability, uneven mixing, and poor content uniformity in NMN formulation preparation. It provides a safe and highly flowable nicotinamide mononucleotide-proline co-crystal. This co-crystal exhibits diffraction peaks at 5.5±0.2° and 16.8±0.2° using Cu-Ka radiation and X-ray powder diffraction at 2θ angles. This co-crystal possesses good bulk density and flowability, allowing for direct tableting or capsule filling of the powder. The product weight variation meets pharmacopoeia requirements, and the process is simple, making it suitable for commercial production. Furthermore, proline, a natural amino acid and a component of collagen, is safer and more reliable as a co-crystal form than isoniazid (classified as a Group 3 carcinogen by the WHO), which is disclosed in existing technologies.

The application relates to a method and a special smoking room for low-temperature smoked bacon, and relates to the technical field of meat product deep processing and food machinery engineering. The special part is that a special low-temperature smoking room is used for temperature section smoking: first stage smoking: the smoke temperature is adjusted through a circulating water cooling device, the smoke gas temperature contacted by the bottom layer of bacon blanks in the bacon smoking room is controlled to be 20-25 DEG C, the smoke gas temperature contacted by the top layer of bacon blanks is controlled to be 15-20 DEG C, and smoking is carried out for 2-4 months; second stage smoking: the smoke gas temperature contacted by the bottom layer of bacon blanks in the bacon smoking room is controlled to be 30-35 DEG C, and the smoke gas temperature contacted by the top layer of bacon blanks is controlled to be 25-30 DEG C. Beneficial effects: the oil and fire are separated, and the problem of carcinogens such as benzo[a]pyrene generated by high-temperature cracking of oil is completely eliminated. Meanwhile, the fire risk is greatly reduced, the disadvantages of 'upper maturation and lower growth' or local overheating in the traditional process are eliminated, the controllability of process parameters is high, and a reliable technical path is provided for the standardization and large-scale production of bacon.

The invention relates to the technical field of animal models, and particularly discloses a multi-stage bladder cancer model and a construction method and application thereof. According to the application, specific components of common cigarette extracts popular in the market are identified, urine components of clinical smokers are collected and detected, the fact that benzene and NKK exist in the cigarettes and the urine of the smokers at the same time is successfully found, and the cigarette components benzene and NKK are selected for bladder cancer modeling; benzene and NNK are strong cancerogens existing in tobacco components and urine of smokers, the content of the components is high, the physiological and pathological process of bladder cancerization caused by long-term stimulation after the smokers inhale smoke, enter blood through lungs and form urine through kidneys can be directly simulated, and real life conditions are better met. The multi-stage bladder cancer model is closer to biological characteristics of bladder cancer, has specific exposure factors, and is short in preparation period, high in tumor formation rate, high in operability and good in repeatability.

The disclosed system comprises a primary air curtain system and one or more optional apparel and / or accessory air curtain subsystem components. The primary system and subsystem(s) are configured to create a directionally controlled air curtain effect that repulses, repels, redirects, neutralizes, and / or disperses airborne infectious pathogens, carcinogens, chemicals, and other contaminants away from the body of a user or a surface susceptible to foreign contamination within a protected enclosure.

The invention relates to a method for detecting carcinogens in sulfadoxine. The method comprises the following steps: 1, preparing a blank solution and a test solution; 2, preparing a reference substance solution; and 3, taking the blank solution, the reference solution and the test solution, respectively carrying out gas chromatography determination in a gas chromatograph, recording a chromatogram, recording peak areas of trichloroethylene, aniline and N, N-dimethylaniline, and calculating the content of trichloroethylene, aniline and N, N-dimethylaniline in the sulfadoxine sample. By improving sulfadoxine pretreatment, limiting specific chromatographic conditions and accurately controlling detection conditions, the detection method disclosed by the invention is high in sensitivity, short in analysis time, high in specificity, relatively good in accuracy and precision and high in repeatability, and can meet sample detection requirements.