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34 results about "Environmental behavior" patented technology

The meaning of the term “environmental behavior” unwinds from the contempora- ry conditions in which social studies study environmental behavior. In the period when the society registers changes of the environment, ecosystems, biosphere and climate which. 1 Person is by his physical nature connected to the environment.

Analytic hierarchy process-fuzzy comprehensive evaluation-based chemical project environmental risk evaluation system

The invention discloses an analytic hierarchy process-fuzzy comprehensive evaluation-based chemical project environmental risk evaluation system and belongs to the field of environmental risk control and management. The system comprises the following steps: (1) establishing an environmental risk evaluation index system; (2) dividing the evaluation levels of the environmental risk evaluation index system, determining the standards for evaluation of indexes under different levels, and scoring the indexes; (3) determining the weight of individual index by applying the analytic hierarchy process; (4) carrying out environmental risk comprehensive evaluation by virtue of fuzzy comprehensive evaluation to obtain a decision set; and (5) evaluating the decision set according to the maximum membership principle to obtain the environmental risk evaluation level. According to the technical scheme disclosed by the invention, the system is suitable for risk evaluation of environmental behaviors in all chemical project production processes, can be used for comprehensive risk evaluation, and is comprehensive in evaluation range, perfect in method and system, accurate in evaluation system and good in feasibility.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

Android malicious application detection system based on multi-operation environment behavior comparison

ActiveCN108133139AAccurately detect anti-emulator behaviorEasy to handlePlatform integrity maintainanceOperation schedulingSoftware engineering
An Android malicious application detection system based on multi-operation environment behavior comparison comprises an information extraction module, a dynamic analysis module, an environment detection countering module, a behavior record analysis module and a system operation scheduling module, wherein the information extraction module is used for decompiling a detected APK installation file andproviding data support for subsequent log analysis; the dynamic analysis module is used for dynamic analysis of an Android application by using a sand box technology and recording behaviors executedin the program running process; the environment detection countering module is used for detecting environment detection behaviors in the program running process in real time, carrying out countering according to the detection behaviors of different levels and modifying operation environment detection results in the application into camouflage operation environment characteristics; the behavior record analysis module is used for unified management and analysis of all behavior logs after the to-be-tested application repeatedly runs; the system operation scheduling module is used for controllingthe whole operation process in the system operation process. By means of the method, the behavior difference situation of the application can be captured, whether malicious behaviors exist or not is detected, and the method is suitable for recognizing environment-sensitive malicious applications.
Owner:XI AN JIAOTONG UNIV

Method for preparing multi-component organically-modified bentonite-embedded nanoscale zero-valent iron

The invention discloses a method for preparing multi-component organically-modified bentonite-embedded nanoscale zero-valent iron. The method comprises the following steps that (1) bentonite is preprocessed; (2) 20-50 g/L of bentonite particles are added to 0.1 M of a FeCl3 solution, the bentonite particles and the solution are fully mixed and centrifuged, supernatant liquor is removed, and the process is repeated twice, so that Fe3+ saturated bentonite particles are obtained; (3) the Fe3+ saturated bentonite particles are added to deionized water, the pH is regulated to range from 2 to 3.5, NaBH4 is added to the mixture according to the molar ratio, 25-35:1, of the NaBH4 to Fe3+ under the protection of inert gas, the mixture reacts for 1-3 min at room temperature, and then bentonite-embedded zero-valent iron is obtained through high-speed centrifugation; (4) three organic cation modifying agents, namely HDTMA, TPMA and TMA are added to the deionized water mixed with the bentonite-embedded zero-valent iron, a replacement reaction is conducted for 15-30 min in an oxygen-free environment, and then the multi-component organically-modified bentonite-embedded nanoscale zero-valent iron is obtained through high-speed centrifugation. By means of the method, the clustering phenomenon of nanoscale iron in a complex heavy nonaqueous-phase environment can be relieved, and the surface hydrophobic performance is improved; through organic modification of the three components, adsorption of the bentonite and the reducing action of iron, the environmental behavior and the form of the nanoscale iron are improved, and the degradation efficiency of the nanoscale iron is improved finally.
Owner:SHANGHAI ACADEMY OF ENVIRONMENTAL SCIENCES

Soil column device for simulating leaching, greenhouse gas collection and ammonia volatilization

The invention discloses a soil column device for simulating leaching, greenhouse gas collection and ammonia volatilization. A soil column is vertically arranged on a round plate; water penetration holes are formed in the intersected surface of the round plate and the soil column and are covered with a filtering net; a round water blocking ring surrounds the periphery of the round plate; the bottom of the round plate is connected with a leaching solution water collection tank; a leaching solution collection pipe which is communicated with the leaching solution water collection tank is arranged on the round plate; simultaneously a bottom-free column-shaped box is arranged above the soil column, so that the greenhouse gas collection is realized; in addition, a beaker containing a boric acid solution is arranged in a body of the box, so that the determination of the ammonia volatilization can be realized. The soil column device disclosed by the invention can be used for performing quantitative monitoring on environmental behaviors of soil-plant system nutrients on three aspects including leaching, greenhouse gas collection and ammonia volatilization; and the soil column device is high in integration degree of parts and convenient tot assemble.
Owner:ZHEJIANG UNIV

Foundation pit engineering high-pressure jet grouting pile reinforcement construction method

The invention discloses a foundation pit engineering high-pressure jet grouting pile reinforcement construction method. The construction method comprises the following steps of conducting surveying and positioning, arranging a drilling machine in place, conducting pipe insertion, conducting trial spraying, conducting high-pressure jet grouting and grouting; conducting waste slurry treatment, flushing materials and tools, and moving a rotary jet grouting machine to a next hole location to conduct repeated construction until construction is completed. Through the foundation pit engineering high-pressure jet grouting pile reinforcement construction method, in the establishment and implement process, the legal compliance principle should be embodied all the time with the main purpose of pollution prevention, the requirements of related parties for environmental management are met, and environmental behaviors of the project are continuously perfected in a pointed mode. The construction method conforms to the civilized construction requirements without disturbing residents, polluting the environment and causing public safety affairs. The specific construction behaviors during high-pressure jet grouting construction are implemented in strict accordance with the construction method to control environmental pollution and achieve the civilized construction target.
Owner:JIANGSU NANTONG NO 2 CONSTR ENG GRP

Evaluation method of biodegradability of organic matter

The invention provides an evaluation method of biodegradability of an organic matter and relates to an evaluation method and a technology of an organic matter environment. In order to solve the problems of measurement error and over long measurement period caused by dilution during BOD5 measurement, the invention uses the growth indicator TTC spectrophotometry to measure the effect of an organic compound on the microbial activity, thereby determining the biodegradability of the organic matter; the method comprises the following steps: using the statistical average method to calculate the corresponding Rsi value; if the Rsi value of the organic matter under measurement is more than 1, the organic matter can be utilized by the microorganism, and the more Rsi value is, the better the biodegradability of the organic matter is; if Rsi value of the organic matter under measurement is lower than 1, the organic matter can hardly be utilized by the microorganism, and the lower Rsi value is, the poorer the biodegradability of the organic matter is. The evaluation method used by the invention is simple and quick, can be used to measure the biodegradability of a single organic compound, also can be used to measure the biodegradability of a mixture of unknown component, and simultaneously avoids the measurement error caused by the high dilution.
Owner:ZHEJIANG UNIV OF TECH

Method for estimating concentration of secondary organic carbon in particulate matters in environment air

The invention provides a method for estimating the concentration of secondary organic carbon (SOC) in particulate matters in environment air. The method comprises the following steps: firstly, determining the concentrations of SO4<2->, NO3<->, NH4<+>, organic carbon and element carbon in PM2.5 (Particulate Matter 2.5) in the environment air; calculating by utilizing the concentrations of the organic carbon and the element carbon to obtain the concentration of the secondary organic carbon in the PM2.5; establishing a regression model for describing a mutual relation of the SO4<2->, the NO3<->, the NH4<+> and the secondary organic carbon; finally, estimating the concentration of the secondary organic carbon by applying the model through the concentrations of the SO4<2->, the NO3<-> and the NH4<+> in the PM2.5. The concentration of the secondary organic carbon is estimated by utilizing the correlation between secondary pollutants in the PM2.5 and the problem of how to obtain the concentration of the SOC through directly determining the concentration of secondary inorganic ions in the PM2.5 in the environment air is solved, so that a theoretical foundation is provided for source analysis and environment behavior of the secondary organic carbon.
Owner:TAIYUAN UNIV OF TECH

A soil column device for simulating leaching, greenhouse gas collection and ammonia volatilization

The invention discloses a soil column device for simulating leaching, greenhouse gas collection and ammonia volatilization. A soil column is vertically arranged on a round plate; water penetration holes are formed in the intersected surface of the round plate and the soil column and are covered with a filtering net; a round water blocking ring surrounds the periphery of the round plate; the bottom of the round plate is connected with a leaching solution water collection tank; a leaching solution collection pipe which is communicated with the leaching solution water collection tank is arranged on the round plate; simultaneously a bottom-free column-shaped box is arranged above the soil column, so that the greenhouse gas collection is realized; in addition, a beaker containing a boric acid solution is arranged in a body of the box, so that the determination of the ammonia volatilization can be realized. The soil column device disclosed by the invention can be used for performing quantitative monitoring on environmental behaviors of soil-plant system nutrients on three aspects including leaching, greenhouse gas collection and ammonia volatilization; and the soil column device is high in integration degree of parts and convenient tot assemble.
Owner:ZHEJIANG UNIV

A preparation method of multi-component organically modified bentonite embedding nanometer zero-valent iron

The invention discloses a method for preparing multi-component organically-modified bentonite-embedded nanoscale zero-valent iron. The method comprises the following steps that (1) bentonite is preprocessed; (2) 20-50 g / L of bentonite particles are added to 0.1 M of a FeCl3 solution, the bentonite particles and the solution are fully mixed and centrifuged, supernatant liquor is removed, and the process is repeated twice, so that Fe3+ saturated bentonite particles are obtained; (3) the Fe3+ saturated bentonite particles are added to deionized water, the pH is regulated to range from 2 to 3.5, NaBH4 is added to the mixture according to the molar ratio, 25-35:1, of the NaBH4 to Fe3+ under the protection of inert gas, the mixture reacts for 1-3 min at room temperature, and then bentonite-embedded zero-valent iron is obtained through high-speed centrifugation; (4) three organic cation modifying agents, namely HDTMA, TPMA and TMA are added to the deionized water mixed with the bentonite-embedded zero-valent iron, a replacement reaction is conducted for 15-30 min in an oxygen-free environment, and then the multi-component organically-modified bentonite-embedded nanoscale zero-valent iron is obtained through high-speed centrifugation. By means of the method, the clustering phenomenon of nanoscale iron in a complex heavy nonaqueous-phase environment can be relieved, and the surface hydrophobic performance is improved; through organic modification of the three components, adsorption of the bentonite and the reducing action of iron, the environmental behavior and the form of the nanoscale iron are improved, and the degradation efficiency of the nanoscale iron is improved finally.
Owner:SHANGHAI ACADEMY OF ENVIRONMENTAL SCIENCES
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