34 results about "Exposure assessment" patented technology

A miniaturized, ruggedized, field-deployable Portable Exposure Assessment System (PEAS) is used to remotely monitor workers and provide real-time warning of exposure to musculoskeletal injury conditions via alarm and smart-phone transmission. The PEAS unit wirelessly acquires exposure data from sensors; conducts initial data analysis; triggers proximal and remote alarms; sends out text messages with abnormal data, GPS locations, and time stamps to a safety office; and saves data for more extensive assessment. Sensor technology is used in this field-deployable system to simultaneously measure and collect the body loads and awkward postures imposed by package handling as well as driving-related, low-frequency vibration exposures. Wireless technology is used to set up wireless communication links between the sensors and a data logger and between the data logger and a smart phone with GPS, date/time stamp and text messaging capabilities.

The invention relates to a major hazard recognition method, a major hazard recognition system, a storage medium and a computer device. The method comprises steps: the state information of a hazard is acquired; the state information is inputted to a pre-built accident evolution model, and an accident type evolved by the hazard and the happening possibility of each accident type are obtained; according to the preset criterions, a disaster bearing carrier corresponding to the hazard is determined, and an exposure assessment model and a vulnerability assessment model of the disaster bearing carrier are acquired, wherein the number of preset criterions is at least two; the output result of the accident evolution model is read, and according to the output result, the exposure assessment model and the vulnerability assessment model, a risk prediction value corresponding to each criterion is calculated; and the risk prediction value of each preset criterion is compared with a corresponding risk threshold, and according to the comparison result, whether the hazard is a major hazard is judged. Thus, the major hazard can be effectively recognized, and happening of a major accident is prevented.

The invention relates to a workplace benzene occupational exposure and carcinogenic hazard analysis method. A program of an adopted technical method analyses the risk by steps of a health risk assessment four-section method which is the most popular in the world, namely, risk identification, dose-response assessment, exposure assessment and risk characterization. The method comprises the following steps: numerically simulating an inner exposure dose by using ERDEM software; analyzing a quantitative relation between the exposure dose and the carcinogenic response by using a multi-step model; and analyzing the probability distribution rule by using a crystal ball Monte Carlo analogue method aiming at the uncertainty of the exposure and the risk. The invention firstly and perfectly provides a workplace benzene occupational exposure and carcinogenic hazard analysis technology; and the method can be applied to the work such as health monitoring, occupational exposure and health risk assessment and the like of high-risk occupational groups.

The method of the present invention to re-factor, rationalize, and prioritize a service model and to assess service exposure in the service model is illustrated. To be dedicated to every client's success means, in this context, to be sure we are building the right service portfolio for the client that has the highest relevance to what they do, what their objectives are, and what they aspire to achieve. Therefore, we need to periodically pause and review the service model as it stands, infant or mature, and validate its relevance from a client's perspective. This process is called rationalizing the service model (or portfolio). This review can lead to changes (called re-factoring) in the service model due to a re-prioritization. Some services will become more important, others will sink in priority. Thus, the method of the present invention is called service re-factoring and rationalization (SRR). The service model is reviewed and re-factored and the service portfolio and service hierarchy are refined, exposure decisions are made, and finally the service model and its constituent parts are rationalized based on the re-factoring and exposure decisions. Another technique called Service Litmus Tests (SLTs) is leveraged during service re-factoring and rationalization. SLTs are set of gating criteria to select and filter a set of (candidate) services from the service portfolio for exposure. A Service Exposure Assessment Toolkit (SEAT) is also presented in the present invention. SEAT is a mathematical model to facilitate making exposure decisions for services and prioritizing the services in the service model.

The invention discloses a convenient and small near-surface atmospheric boundary layer wind tunnel and an application thereof in risk exposure evaluation for people. The near-surface atmospheric boundary layer wind tunnel comprises a wind tunnel body and a backflow stabilization device; the wind tunnel body is provided with a natural wind injection device and a simulation testing device, the natural wind injection device and the simulation testing device are connected, and the simulation testing device is connected with the backflow stabilization device; the natural wind injection device is provided with a pipeline blower, a cyclone wind mixing pipe, a diffusing flow equalizer and a cyclone distributing pipe which are connected sequentially; an internal component for preventing flowing separation is arranged in the center in the diffusing flow equalizer; and a static mixing spiral rod is arranged in the cyclone wind mixing pipe and is welded on the inner wall of the cyclone wind mixingpipe. The wind tunnel measures the atmosphere-pollutant environment migration and transforming behaviors, the floor area of the wind tunnel is reduced, and the investment is saved. The evaluation problems about the migration transforming process of near-surface atmospheric pollutants of a local region in the environment and influence of the near-surface atmospheric pollutants on health of peoplecan be solved.

The invention discloses an assessment method for heavy metal contaminated sites in southern China. The assessment method comprises the following steps of A, initiating risk assessment; B, identifyinghazards; C, conducting exposure assessment and toxicity assessment; D, conducting risk characterization; E, judging whether or not the risk is acceptable; F, yes, ending the risk assessment; G, no, calculating soil limitation based on carcinogenic risks and the soil limitation based on non-carcinogenic risks; H, putting forward a soil repair suggestion control value, and ending the risk assessment. According to the method, monitoring points are located in the area which may be directly contacted with heavy metals, the sampling depth mainly adopts the upper layer of soil, simultaneously the soil samples collected are screened preliminarily by a heavy metal detector, the samples with high detection value are selected for laboratory analysis, on the one hand, the contamination condition of investigation sites can be determined quickly and preliminarily, and on the other hand, the optimization of detection funds can be achieved, which in line with own interests of people.

The invention discloses application of a uridine diphosphate glucuronosyl transferase 1A1 subtype (UGT 1A1) gene to preparing detoxicants for promoting DON metabolism of animals and belongs to the field of molecular biology. Therefore, the invention provides a key regulation factors of liver metabolism of DON, provides a scientific basis for exposure assessment of DON in feeds and also provides aconvenient and effective index for DON metabolism assessment of animals. The invention also discloses a method for assessing DON metabolism of animals by detecting the transcriptional level of the UGT1A1. The method for assessing DON metabolism of animals by detecting the transcriptional level of the UGT 1A1 can accurately, conveniently and rapidly complete assessment. The application of the UGT1A1 to preparing the detoxicants for animals is of high significance to development of new detoxicants for promoting excretion, reducing residues and reducing DON toxicity.

The invention provides a quantitative risk evaluation method and system based on the combined action of mixed benzene series, and the method comprises the steps: achieving internal exposure evaluation based on an inhalation PBPK model of mixed benzene series exposure; carrying out carcinogenic risk evaluation by using a multi-order model based on internal exposure evaluation; based on the internal exposure assessment, a risk index HI is used for non-carcinogenic risk assessment. The technical problem of simulation of metabolism of the mixed benzene series in a human body is solved; on the basis of considering the joint effect, quantitative health risk evaluation of mixed benzene series exposure is realized.

The invention discloses a scene-based pollution site ecological risk evaluation method. The method comprises the following steps: (1) constructing differentiated scenes according to future land development and utilization modes of polluted sites and bio-available soil parameter pollution, and endowing different protection targets to the polluted sites under different scenes; (2) collecting toxicity data of pollutants in the polluted site on different soil organisms to perform effect evaluation, and measuring exposure concentrations of the pollutants at different sampling points in the polluted site to perform exposure evaluation; according to a protection target obtained through scene matching, effect evaluation and exposure evaluation are combined through a probability ecological risk evaluation method, and the probability of the ecological risk of pollutants in the polluted site is obtained. A series of scenes are formulated according to soil properties and a land development and utilization mode of a polluted site; according to the differentiated protection target formulated according to the scene, the accuracy of ecological risk assessment can be effectively improved, and meanwhile, a pollution control basis can be practically provided for risk quantitative analysis.

The invention relates to a petrochemical enterprise chemical poison semi-quantitative percutaneous exposure risk decision-making method, and mainly solves the problems of lack of chemical poison percutaneous exposure assessment methods and difficult management decision-making in the prior art. According to the petrochemical enterprise chemical poison semi-quantitative percutaneous exposure risk decision-making method, a petrochemical enterprise chemical poison semi-quantitative percutaneous exposure risk decision-making system is adopted to perform petrochemical enterprise chemical poison semi-quantitative percutaneous exposure risk grade evaluation and judgment and provide different grades of skin exposure risk control management strategies. The system comprises an information acquisitionmodule, a skin hazard level evaluation module, a similar exposure group screening module, an exposure factor data acquisition module, a skin exposure level calculation module, a skin risk level judgment module and a skin risk control decision module. The method can solve the problems well, and can be used in petrochemical enterprise chemical poison semi-quantitative percutaneous exposure risk decision.

The invention relates to a country drinking water health risk assessment and management method and belongs to intersection of disciplines including science of environmental health, hydrology, science of water resources and the like. According to the country drinking water health risk assessment and management method, based on the four-step health risk assessment method (harm identification, dosage-reaction relation assessment, exposure assessment and risk characterization) of the National Academy of Science (NAS), human health hazards which may be caused by hazardous materials in a country drinking water source are assessed, the time distribution condition and the space distribution condition of the human health risk degree are analyzed based on the GIS technology, a visual geographic information management platform for country drinking water health risk assessment and management is also established, and therefore a scientific decision basis can be effectively provided for drinking water health risk control.

The invention provides a chemical industrial park chemical acute poisoning risk assessment method and system, and the method comprises the steps: S1, hazard identification: identifying accident links and chemicals causing acute poisoning due to leakage through engineering analysis and field investigation; s2, exposure evaluation: carrying out exposure evaluation by adopting computational fluid dynamics (CFD) software, and predicting the concentration and influence range of chemicals in the air; the accident emergency level is determined; s3, dose-reaction relation evaluation: establishing a dose-reaction relation model to obtain a probability variable of an acute poisoning lethal probability; and S4, risk characterization: calculating the corresponding acute poisoning lethal probability by using the calculated probability variable, and evaluating the risk acceptable level of the chemical industry park. According to the invention, a scientific basis can be provided for risk management work such as reasonable occupational health construction, planning and layout, occupational health management, emergency rescue and the like in the chemical industry park, risk early warning and management capabilities are improved, and occupational disease hazard accidents are prevented and controlled.

The invention relates to a food pollutant exposure assessment method based on a Bayesian hierarchical model, which optimizes the calculation of the average concentration of pollutants in food, adopts the Bayesian hierarchical model to calculate and restore the known data in the literature, derives the concentration distribution probability, and then carries out the calculation of exposure assessment. According to the method, the total data, such as average value data and variance data, obtained in literatures can be summarized, random sample points of posteriori distribution are extracted by combining prior distribution, using a Bayesian hierarchical model and adopting an MCMC sampling method, so that concentration distribution of detected pollutants is obtained, and then exposure evaluation is calculated by combining consumption data. According to the method, the data can be corrected, and the data can be restored more accurately.