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30results about How to "Low application rate" patented technology

Method for modifying straw biochar for remediating heavy metal contaminated soil

The invention relates to a method for modifying straw biochar for remediating heavy metal contaminated soil. The method comprises the following steps: (1) feeding crop straw as a biochar raw materialto a drying oven, and smashing and sieving the crop straw to obtain powdery crop straw; (2) weighing the crop straw, placing the crop straw in a box-type atmosphere furnace, introducing nitrogen to keep an anaerobic condition, performing programmed heating to a target temperature, and keeping the final temperature for pyrolysis for 2-4 h to obtain original biochar; (3) repeatedly washing the biochar with deionized water to be neutral and drying the biochar; (4) weighing the straw biochar, soaking the straw biochar in 30% sodium hydroxide and performing stirring; (5) repeatedly washing the straw biochar with deionized water, and placing the straw biochar in the drying oven to obtain the target product, namely, alkali modified biochar. The crop straw subjected to reduction and harmless treatment can effectively immobilize heavy metal pollutants after being added to the heavy metal contaminated soil, durable and stable remediation effect is realized, secondary pollution is avoided, and the biochar is an ideal low-cost remediation agent for the heavy metal contaminated soil.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI

Intelligent visualization system and method for constructional engineering construction standard atlas based on Unity 3D

The invention discloses an intelligent visualization system and method for a constructional engineering construction standard atlas based on Unity 3D. The invention belongs to the field of intelligentbuildings, the technical problem to be solved by the invention is how to convert a traditional 2D paper standard specification atlas into a building engineering construction standard atlas which is three-dimensional, visual, intelligent, interactive and easy to learn. According to the technical scheme, the system comprises a three-dimensional visualization unit and an intelligent interaction unit. According to the method, equal-proportion reduction modeling is carried out on the content described by a planar construction drawing set by utilizing a BIM technology, and colors of different 3D components forming the model are designed and distinguished by referring to a real object; importing the model into a Unity 3D engine, packaging the model into an APK, and exporting the APK to a mobileterminal screen for display, thereby realizing visualization of a construction standard atlas; a UI interface is designed on the basis of a visual interface, free control over the model based on a touch control mobile terminal screen is achieved, and meanwhile ternary information linkage intelligent teaching is achieved based on a touch control screen.
Owner:THE FIRST COMPARY OF CHINA EIGHTH ENG BUREAU LTD
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