In the China merchants property 2013 green architectural design competition,feature of this awardwinning program is the design method based on the principles of passive priority and comprehensive utilization of full l...In the China merchants property 2013 green architectural design competition,feature of this awardwinning program is the design method based on the principles of passive priority and comprehensive utilization of full life cycle. The passive priority can be achieved by building form derived from the simulation and analysis of wind environment,improvement of the building envelope insulation and the dehumidification of fresh air,the use of solar energy. The full life cycle utilization can be accomplished by the combination of exhibition and residents' leisure activities, and the integration with local cultural tradition, thereby improving energy efficiency and the utilization of the building.展开更多
Faced with the continued downturn of international oil price and increasing complexity of oil-gas geological conditions since 2013, CNOOC China Ltd., Zhanjiang has promoted management innovation of full life circle wi...Faced with the continued downturn of international oil price and increasing complexity of oil-gas geological conditions since 2013, CNOOC China Ltd., Zhanjiang has promoted management innovation of full life circle with the theme of “value to exploration-oriented”, establishing QC system of multiple-dimension exploration to make exploration target management standardized and institutionalized, putting forward new ideas, closed-loop management of “big data” in full life circle to make exploration target and decision flow informationized, generating comprehensive reserve method of exploration target optimization and quantifiable management mode of “probabilistic method” evaluated by experts, and establishing “optimal so-lution” to management decision model to manage optimal target combination to drill and bring about lean management of exploration deployment. All the management innovations and practices have been carried out in oilfields of western South China Sea successfully, with corporation’s exploration decision and deployment guided effectively, a great success of petroleum exploration, and remarkable economic as well as society benefits.展开更多
Heavy metal(loid)s(HMs)have caused serious environmental pollution and health risks.Although the past few years have witnessed the achievements of studies on environmental behavior of HMs,the related toxicity mechanis...Heavy metal(loid)s(HMs)have caused serious environmental pollution and health risks.Although the past few years have witnessed the achievements of studies on environmental behavior of HMs,the related toxicity mechanisms,and pollution control,their relationship remains a mystery.Researchers generally focused on one topic independently without comprehensive considerations due to the knowledge gap between environmental science and human health.Indeed,the full life cycle control of HMs is crucial and should be reconsidered with the combination of the occurrence,transport,and fate of HMs in the environment.Therefore,we started by reviewing the environmental behaviors of HMs which are affected by a variety of natural factors as well as their physicochemical properties.Furthermore,the related toxicity mechanisms were discussed according to exposure route,toxicity mechanism,and adverse consequences.In addition,the current state-of-the-art of available technologies for pollution control of HMs wastewater and solid wastes were summarized.Finally,based on the research trend,we proposed that advanced in-operando characterizations will help us better understand the fundamental reaction mechanisms,and big data analysis approaches will aid in establishing the prediction model for risk management.展开更多
Based on the consideration of operation environment and structural property, an optimum design model of offshore jacket platform is developed in this paper, namely, the reliability-based full-life cycle optimum design...Based on the consideration of operation environment and structural property, an optimum design model of offshore jacket platform is developed in this paper, namely, the reliability-based full-life cycle optimum design model. In this model, the time-dependent reliability assessment method for structural members is established by combination of the decrease of sectional size and performance deterioration of material. The initial investment, maintenance cost and failure loss cost are assembled into the model. The total cost of the platform structure system in its full service period is chosen as the objective function, and the initial reliabilities of the layer elements partitioned in advance are taken as the design variables. Different models are obtained, depending on whether the system reliability constraint is considered or not. This optimum design model can result in the lowest full-life cost and the optimal initial layer reliability of an offshore jacket platform in the design of marine structures. The feasibility of this model is illustrated with an actual jacket platform in the Liaodong Gulf as an example.展开更多
文摘In the China merchants property 2013 green architectural design competition,feature of this awardwinning program is the design method based on the principles of passive priority and comprehensive utilization of full life cycle. The passive priority can be achieved by building form derived from the simulation and analysis of wind environment,improvement of the building envelope insulation and the dehumidification of fresh air,the use of solar energy. The full life cycle utilization can be accomplished by the combination of exhibition and residents' leisure activities, and the integration with local cultural tradition, thereby improving energy efficiency and the utilization of the building.
文摘Faced with the continued downturn of international oil price and increasing complexity of oil-gas geological conditions since 2013, CNOOC China Ltd., Zhanjiang has promoted management innovation of full life circle with the theme of “value to exploration-oriented”, establishing QC system of multiple-dimension exploration to make exploration target management standardized and institutionalized, putting forward new ideas, closed-loop management of “big data” in full life circle to make exploration target and decision flow informationized, generating comprehensive reserve method of exploration target optimization and quantifiable management mode of “probabilistic method” evaluated by experts, and establishing “optimal so-lution” to management decision model to manage optimal target combination to drill and bring about lean management of exploration deployment. All the management innovations and practices have been carried out in oilfields of western South China Sea successfully, with corporation’s exploration decision and deployment guided effectively, a great success of petroleum exploration, and remarkable economic as well as society benefits.
基金supported by the National Key Research and Devel-opment Program of China(Grant No.2019YFA0210400)the National Natural Science Foundation of China(Grant Nos.21836002 and 52104315)+1 种基金the Foundation for Innovative Research Groups of the Na-tional Natural Science Foundation of China(Grant No.52121004)the Major program Natural Science Foundation of Hunan Province of China(No.2021JC0001).
文摘Heavy metal(loid)s(HMs)have caused serious environmental pollution and health risks.Although the past few years have witnessed the achievements of studies on environmental behavior of HMs,the related toxicity mechanisms,and pollution control,their relationship remains a mystery.Researchers generally focused on one topic independently without comprehensive considerations due to the knowledge gap between environmental science and human health.Indeed,the full life cycle control of HMs is crucial and should be reconsidered with the combination of the occurrence,transport,and fate of HMs in the environment.Therefore,we started by reviewing the environmental behaviors of HMs which are affected by a variety of natural factors as well as their physicochemical properties.Furthermore,the related toxicity mechanisms were discussed according to exposure route,toxicity mechanism,and adverse consequences.In addition,the current state-of-the-art of available technologies for pollution control of HMs wastewater and solid wastes were summarized.Finally,based on the research trend,we proposed that advanced in-operando characterizations will help us better understand the fundamental reaction mechanisms,and big data analysis approaches will aid in establishing the prediction model for risk management.
文摘Based on the consideration of operation environment and structural property, an optimum design model of offshore jacket platform is developed in this paper, namely, the reliability-based full-life cycle optimum design model. In this model, the time-dependent reliability assessment method for structural members is established by combination of the decrease of sectional size and performance deterioration of material. The initial investment, maintenance cost and failure loss cost are assembled into the model. The total cost of the platform structure system in its full service period is chosen as the objective function, and the initial reliabilities of the layer elements partitioned in advance are taken as the design variables. Different models are obtained, depending on whether the system reliability constraint is considered or not. This optimum design model can result in the lowest full-life cost and the optimal initial layer reliability of an offshore jacket platform in the design of marine structures. The feasibility of this model is illustrated with an actual jacket platform in the Liaodong Gulf as an example.