Photoinhibitive properties of super-high-yielding hybrid rice Ⅱ you 129 and its adaptation mechanism to strong light stress were investigated by measuring the light-response curve, diurnal variations of net photosynt...Photoinhibitive properties of super-high-yielding hybrid rice Ⅱ you 129 and its adaptation mechanism to strong light stress were investigated by measuring the light-response curve, diurnal variations of net photosynthetic rate and chlorophyll fluorescence parameters of Ⅱ you 129 leaves and compared with Shanyou 63. Photoinhibition of rice flag leaves under field conditions mainly resulted from the increase of thermal dissipation, especially for thermal dissipation depended on the xanthophyll circle, but no destruction of photosynthetic apparatus occurred. Potentially super-high-yielding hybrid rice Ⅱ you 129 was more tolerant to photoinhibition than Shanyou 63, because it had higher light saturation intensity and maximum net photosynthetic rate; more active xanthophyll cycle, and more rapid recovery ability after photoinhibition.展开更多
The high-concentration organic wastewater has great harm and high concentration of pollutants, which is a big problem in the wastewater treatment industry. The high-concentration organic wastewater in this paper takes...The high-concentration organic wastewater has great harm and high concentration of pollutants, which is a big problem in the wastewater treatment industry. The high-concentration organic wastewater in this paper takes landfill leachate as the experimental object, and takes corresponding measures to reduce the concentration of suspended solids as much as possible, so as to ensure the reliable operation of the subsequent treatment process. In the process of the experiment, it is necessary to simulate the process of mixing liquid in the reaction tank and blowing off the water, and remove the suspended substances in the reaction tank by centrifugal separation method. In this process, the influence of factors such as centrifugal time and rotational speed on the centrifugal effect is studied, and the corresponding centrifugal effect is determined when the conditions are different, and then the subsequent pretreatment and other processes are better carried out.展开更多
At present, the mine auxiliary transportation equipment at home and abroad mainly include monorail crane, rail clamping vehicle, toothed rail vehicle and trackless rubber tyred vehicle. Compared with other models, mon...At present, the mine auxiliary transportation equipment at home and abroad mainly include monorail crane, rail clamping vehicle, toothed rail vehicle and trackless rubber tyred vehicle. Compared with other models, monorail crane has strong climbing ability and flexible operation. The locomotive can realize continuous direct transportation without transfer in changeable slope and multi turnout, and has strong adaptability to roadway deformation and is not affected by floor deformation. Ponding or material accumulation. According to the power type, the monorail crane mainly includes explosion-proof diesel engine monorail crane, battery monorail crane and pneumatic monorail crane. Among them, the diesel monorail spreader has the advantages of great flexibility, easy access to power source, no danger of electric shock, stable operation, low cost and so on. With the increasing number of extraction roadways in roadway engineering and the increasing design length of roadways, the use of diesel monorail crane can well solve the difficult problem of material transportation.展开更多
According to the document requirements, such as “Opinions on Constructing Dual Prevention Mechanism in Implementation of Work Guide for Preventing Serious Accidents” (Safety Committee Office [2016] No.11) and “Basi...According to the document requirements, such as “Opinions on Constructing Dual Prevention Mechanism in Implementation of Work Guide for Preventing Serious Accidents” (Safety Committee Office [2016] No.11) and “Basic Requirements and Scoring Method for Coal Mine Safety Production Standardization”, the Group Company has taken over the top-level design, sorted out the management difficulties of coal mine safety quality standardization, optimized the safety risk classification management method and hidden danger closed-loop management process based on in-depth study of the connotation of the dual prevention mechanism system for coal mine safety. The design and development of a coal mine intelligent dual-control integrated system including safety risk standard library, hidden danger investigation standard library, behavior control standard library, hazard source management and safety production standardization score and other functions. At present, the distributed and cross-regional "dual control" mechanism information platform system developed and deployed by the group company has been officially put into operation. It has the ability to remotely monitor the risk control and hidden danger investigation of the mines to which the group company belongs, expanded new channels of safety management and innovated the level of safety management information.展开更多
基金This work was supported by The State Key Basic Re-search and Development Plan(G1998010100).
文摘Photoinhibitive properties of super-high-yielding hybrid rice Ⅱ you 129 and its adaptation mechanism to strong light stress were investigated by measuring the light-response curve, diurnal variations of net photosynthetic rate and chlorophyll fluorescence parameters of Ⅱ you 129 leaves and compared with Shanyou 63. Photoinhibition of rice flag leaves under field conditions mainly resulted from the increase of thermal dissipation, especially for thermal dissipation depended on the xanthophyll circle, but no destruction of photosynthetic apparatus occurred. Potentially super-high-yielding hybrid rice Ⅱ you 129 was more tolerant to photoinhibition than Shanyou 63, because it had higher light saturation intensity and maximum net photosynthetic rate; more active xanthophyll cycle, and more rapid recovery ability after photoinhibition.
文摘The high-concentration organic wastewater has great harm and high concentration of pollutants, which is a big problem in the wastewater treatment industry. The high-concentration organic wastewater in this paper takes landfill leachate as the experimental object, and takes corresponding measures to reduce the concentration of suspended solids as much as possible, so as to ensure the reliable operation of the subsequent treatment process. In the process of the experiment, it is necessary to simulate the process of mixing liquid in the reaction tank and blowing off the water, and remove the suspended substances in the reaction tank by centrifugal separation method. In this process, the influence of factors such as centrifugal time and rotational speed on the centrifugal effect is studied, and the corresponding centrifugal effect is determined when the conditions are different, and then the subsequent pretreatment and other processes are better carried out.
文摘At present, the mine auxiliary transportation equipment at home and abroad mainly include monorail crane, rail clamping vehicle, toothed rail vehicle and trackless rubber tyred vehicle. Compared with other models, monorail crane has strong climbing ability and flexible operation. The locomotive can realize continuous direct transportation without transfer in changeable slope and multi turnout, and has strong adaptability to roadway deformation and is not affected by floor deformation. Ponding or material accumulation. According to the power type, the monorail crane mainly includes explosion-proof diesel engine monorail crane, battery monorail crane and pneumatic monorail crane. Among them, the diesel monorail spreader has the advantages of great flexibility, easy access to power source, no danger of electric shock, stable operation, low cost and so on. With the increasing number of extraction roadways in roadway engineering and the increasing design length of roadways, the use of diesel monorail crane can well solve the difficult problem of material transportation.
文摘According to the document requirements, such as “Opinions on Constructing Dual Prevention Mechanism in Implementation of Work Guide for Preventing Serious Accidents” (Safety Committee Office [2016] No.11) and “Basic Requirements and Scoring Method for Coal Mine Safety Production Standardization”, the Group Company has taken over the top-level design, sorted out the management difficulties of coal mine safety quality standardization, optimized the safety risk classification management method and hidden danger closed-loop management process based on in-depth study of the connotation of the dual prevention mechanism system for coal mine safety. The design and development of a coal mine intelligent dual-control integrated system including safety risk standard library, hidden danger investigation standard library, behavior control standard library, hazard source management and safety production standardization score and other functions. At present, the distributed and cross-regional "dual control" mechanism information platform system developed and deployed by the group company has been officially put into operation. It has the ability to remotely monitor the risk control and hidden danger investigation of the mines to which the group company belongs, expanded new channels of safety management and innovated the level of safety management information.
