A zeolite Mazzite (MAZ) analogue with high silica content has been synthesized from a Na2O-Al2O3-SiO2-morpholine-H2O system. The crystal morphology of this MAZ analogue was found to consist of spherical agglomerates o...A zeolite Mazzite (MAZ) analogue with high silica content has been synthesized from a Na2O-Al2O3-SiO2-morpholine-H2O system. The crystal morphology of this MAZ analogue was found to consist of spherical agglomerates of diameter up to 17 μm. It has been unequivocally demonstrated that zeolite Mordenite (MOR) or amorphous material was produced instead in the absence of either morpholine or Na+. Associated phases indicate that the MAZ may be a “intermediate phase” between the crystallization fields of zeolites Analcime (ANA) and MOR. Thus, the zeolite MAZ analogue is seemingly derived from the cooperative structure-directing effect of the organic molecule morpholine and the inorganic cation Na+. The results of CHN elemental analyses as well as of thermogravimetric (TG) analyses confirmed that morpholine had been incorporated into the zeolitic structure.展开更多
Based on the atmospheric analogy principle, the inverse problem that the information of historical analogue data is utilized to estimate model errors is put forward and a method of analogue correction of errors （ACE...Based on the atmospheric analogy principle, the inverse problem that the information of historical analogue data is utilized to estimate model errors is put forward and a method of analogue correction of errors （ACE） of model is developed in this paper. The ACE can combine effectively statistical and dynamical methods, and need not change the current numerical prediction models. The new method not only adequately utilizes dynamical achievements but also can reasonably absorb the information of a great many analogues in historical data in order to reduce model errors and improve forecast skill. Purthermore, the ACE may identify specific historical data for the solution of the inverse problem in terms of the particularity of current forecast. The qualitative analyses show that the ACE is theoretically equivalent to the principle of the previous analogue-dynamical model, but need not rebuild the complicated analogue-deviation model, so has better feasibility and operational foreground. Moreover, under the ideal situations, when numerical models or historical analogues are perfect, the forecast of the ACE would transform into the forecast of dynamical or statistical method, respectively.展开更多
目的探讨加速康复外科(enhanced recovery after surgery,ERAS)理念下优化围术期管理方案在老年髋臼骨折患者护理中的应用。方法选取2015-02/2019-05月在作者医院收治的69例髋臼骨折患者分为ERAS组(n=32)和常规组(n=37)。ERAS组患者在...目的探讨加速康复外科(enhanced recovery after surgery,ERAS)理念下优化围术期管理方案在老年髋臼骨折患者护理中的应用。方法选取2015-02/2019-05月在作者医院收治的69例髋臼骨折患者分为ERAS组(n=32)和常规组(n=37)。ERAS组患者在传统围术期护理方案的基础上,进行一系列管理方案优化。比较两组患者在围术期指标、视觉模拟评分(visual analogue score,VAS)、并发症、满意度情况。结果两组患者VAS评分在不同监测点均呈降低趋势,且ERAS组VAS评分均明显低于常规组(P<0.05)。ERAS组患者术后出现恶心呕吐、低体温及尿路感染等并发症发生率明显低于常规组(P<0.05)。ERAS组患者术后住院时间和住院总费用显著低于常规组(P<0.05)。在满意度比较方面,ERAS组患者总体满意率明显高于常规组(P<0.05)。结论ERAS优化管理方案可快速改善老年髋臼骨折患者术后疼痛程度,降低术后住院时长、住院费用和并发症发生率,提高患者治疗满意度。展开更多
文摘A zeolite Mazzite (MAZ) analogue with high silica content has been synthesized from a Na2O-Al2O3-SiO2-morpholine-H2O system. The crystal morphology of this MAZ analogue was found to consist of spherical agglomerates of diameter up to 17 μm. It has been unequivocally demonstrated that zeolite Mordenite (MOR) or amorphous material was produced instead in the absence of either morpholine or Na+. Associated phases indicate that the MAZ may be a “intermediate phase” between the crystallization fields of zeolites Analcime (ANA) and MOR. Thus, the zeolite MAZ analogue is seemingly derived from the cooperative structure-directing effect of the organic molecule morpholine and the inorganic cation Na+. The results of CHN elemental analyses as well as of thermogravimetric (TG) analyses confirmed that morpholine had been incorporated into the zeolitic structure.
基金Supported jointly by the National Natural Science Foundation of China under Grant Nos. 40233031, 40575036 and 40675039.
文摘Based on the atmospheric analogy principle, the inverse problem that the information of historical analogue data is utilized to estimate model errors is put forward and a method of analogue correction of errors （ACE） of model is developed in this paper. The ACE can combine effectively statistical and dynamical methods, and need not change the current numerical prediction models. The new method not only adequately utilizes dynamical achievements but also can reasonably absorb the information of a great many analogues in historical data in order to reduce model errors and improve forecast skill. Purthermore, the ACE may identify specific historical data for the solution of the inverse problem in terms of the particularity of current forecast. The qualitative analyses show that the ACE is theoretically equivalent to the principle of the previous analogue-dynamical model, but need not rebuild the complicated analogue-deviation model, so has better feasibility and operational foreground. Moreover, under the ideal situations, when numerical models or historical analogues are perfect, the forecast of the ACE would transform into the forecast of dynamical or statistical method, respectively.
