Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials...Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials, which is not only expensive but also difficult to prepare the xonoflite fibers with diameters around 100 nm. In this study, the ultra fine xonotlite fibers with diameters around 100 nm were prepared by an autoclaving method. The preparation was low-cost oriented by using natural powder quartz and lime as the major raw materials. The intergrowth of the fibers formed thin shell hollow balls or ellipsoids, namely the secondary particles. The length of the nanometer-sized xonotlite fibers was around several microns. The fibers and their secondary particles were produced at 216℃ for 6 h with a continuous stirring of 300-500 r/min. Zirconium oxychloride was used as an additive. The experiments show that zirconium oxychloride has an enormous effect on the growing habit of xonotlite crystals展开更多
Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials...Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials, which is not only expensive but also difficult to prepare the xonotlite fibers with diameters around 100 nm. In this study, the ultra fine xonotlite fibers with diameters around 100 nm were prepared by an autoclaving method. The preparation was low-cost oriented by using natural powder quartz and lime as the major raw materials. The intergrowth of the fibers formed thin shell hollow balls or ellipsoids, namely the secondary particles.The length of the nanometer-sized xonotlite fibers was around several microns. The fibers and their secondary particles were produced at 216℃ for 6 h with a continuous stirring of 300-500 r/min. Zirconium oxychloride was used as an additive. The experiments show that zirconium oxychloride has an enormous effect on the growing habit of xonotlite crystals and plays an important role in controlling the diameter of the xonotlite fibers.展开更多
基于某公司针对Φ12 mm HRB400E热轧带肋钢筋进行的“提锰降钒”生产实践,参考Mn和V的强化机理,统计并分析了两个时期内轧制该规格钢筋的化学成分及力学性能。结果表明:在HRB400E生产实践中,质量分数为0.001%的V对屈服强度的影响近似相...基于某公司针对Φ12 mm HRB400E热轧带肋钢筋进行的“提锰降钒”生产实践,参考Mn和V的强化机理,统计并分析了两个时期内轧制该规格钢筋的化学成分及力学性能。结果表明:在HRB400E生产实践中,质量分数为0.001%的V对屈服强度的影响近似相等于质量分数为0.020%的Mn对钢材屈服强度的影响。展开更多
在我国医疗改革的大背景下,基于疾病诊断相关分组(diagnosis related groups,DRGs)付费制度的推广与实施为医疗行业带来了新的挑战与机遇。这种付费方式不仅改变了医院传统的收入模式,还对医院的绩效管理产生了深远的影响。文章旨在深...在我国医疗改革的大背景下,基于疾病诊断相关分组(diagnosis related groups,DRGs)付费制度的推广与实施为医疗行业带来了新的挑战与机遇。这种付费方式不仅改变了医院传统的收入模式,还对医院的绩效管理产生了深远的影响。文章旨在深入探讨DRGs付费制度对医院绩效管理各个方面的影响,包括医院收入结构、医疗质量提升、医疗资源的有效利用以及医疗成本控制等。经过全面而系统的分析,阐明了DRGs付费制度对医院绩效管理所带来的多重挑战。这些挑战不仅涵盖了医院收入结构的调整、医疗服务质量的提升,还涉及医疗资源的有效利用以及医疗成本的控制等方面,对医院的运营和管理提出了更高的要求。针对这些问题,文章提出了一系列对策建议,旨在帮助医院在DRGs付费制度下优化绩效管理体系,实现科学、合理的绩效管理,从而提高医院的可持续发展能力。展开更多
文摘Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials, which is not only expensive but also difficult to prepare the xonoflite fibers with diameters around 100 nm. In this study, the ultra fine xonotlite fibers with diameters around 100 nm were prepared by an autoclaving method. The preparation was low-cost oriented by using natural powder quartz and lime as the major raw materials. The intergrowth of the fibers formed thin shell hollow balls or ellipsoids, namely the secondary particles. The length of the nanometer-sized xonotlite fibers was around several microns. The fibers and their secondary particles were produced at 216℃ for 6 h with a continuous stirring of 300-500 r/min. Zirconium oxychloride was used as an additive. The experiments show that zirconium oxychloride has an enormous effect on the growing habit of xonotlite crystals
基金This work was financially supported by the National Natural Science Foundation of China (No.50172009)
文摘Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials, which is not only expensive but also difficult to prepare the xonotlite fibers with diameters around 100 nm. In this study, the ultra fine xonotlite fibers with diameters around 100 nm were prepared by an autoclaving method. The preparation was low-cost oriented by using natural powder quartz and lime as the major raw materials. The intergrowth of the fibers formed thin shell hollow balls or ellipsoids, namely the secondary particles.The length of the nanometer-sized xonotlite fibers was around several microns. The fibers and their secondary particles were produced at 216℃ for 6 h with a continuous stirring of 300-500 r/min. Zirconium oxychloride was used as an additive. The experiments show that zirconium oxychloride has an enormous effect on the growing habit of xonotlite crystals and plays an important role in controlling the diameter of the xonotlite fibers.
文摘基于某公司针对Φ12 mm HRB400E热轧带肋钢筋进行的“提锰降钒”生产实践,参考Mn和V的强化机理,统计并分析了两个时期内轧制该规格钢筋的化学成分及力学性能。结果表明:在HRB400E生产实践中,质量分数为0.001%的V对屈服强度的影响近似相等于质量分数为0.020%的Mn对钢材屈服强度的影响。
文摘在我国医疗改革的大背景下,基于疾病诊断相关分组(diagnosis related groups,DRGs)付费制度的推广与实施为医疗行业带来了新的挑战与机遇。这种付费方式不仅改变了医院传统的收入模式,还对医院的绩效管理产生了深远的影响。文章旨在深入探讨DRGs付费制度对医院绩效管理各个方面的影响,包括医院收入结构、医疗质量提升、医疗资源的有效利用以及医疗成本控制等。经过全面而系统的分析,阐明了DRGs付费制度对医院绩效管理所带来的多重挑战。这些挑战不仅涵盖了医院收入结构的调整、医疗服务质量的提升,还涉及医疗资源的有效利用以及医疗成本的控制等方面,对医院的运营和管理提出了更高的要求。针对这些问题,文章提出了一系列对策建议,旨在帮助医院在DRGs付费制度下优化绩效管理体系,实现科学、合理的绩效管理,从而提高医院的可持续发展能力。
