Nel Noddings’ethics of care is an important lineage of Western moral education thought,which contains deep humanistic values.Service-learning advocates the equal importance of service and learning,and emphasizes more...Nel Noddings’ethics of care is an important lineage of Western moral education thought,which contains deep humanistic values.Service-learning advocates the equal importance of service and learning,and emphasizes more on the discovery of educational connotations in practice.Based on the social background of aging,this paper takes the“Care for the Elderly”service-learning program as an example,attempts to take the care ethics as the entry point,adopts interviews,questionnaires,and other research methods,and opens-up the service-learning practice path under the threshold of Nel Noddings’care education theory.展开更多
Nel样分子I型(Nel-like type I molecular,NELL-1)是一种与人颅缝早闭症相关的外分泌型蛋白,近年来一系列体外及体内研究表明NELL-1更是一种非常有效的骨生长因子。与其他骨生长因子相比,NELL-1的生物学效应相对单一,其骨诱导活性也更...Nel样分子I型(Nel-like type I molecular,NELL-1)是一种与人颅缝早闭症相关的外分泌型蛋白,近年来一系列体外及体内研究表明NELL-1更是一种非常有效的骨生长因子。与其他骨生长因子相比,NELL-1的生物学效应相对单一,其骨诱导活性也更具有特异性,同时它无法单独诱导异位骨组织形成,因此NELL-1可具有更高的生物安全性和精准性。NELL-1作为一种全新的生长因子在治疗各类骨组织缺损与骨再生方面具有广阔而良好的应用前景。本文就目前NELL-1在骨再生领域的应用及其作用机制研究的进展做一综述。展开更多
Using sintered corundum as aggregate, white fused corundum powder, fused spinel powder, ultra-fine a-A12 0 3, nano calcium carbonate and hydrated alumina as matrix, effects of nano calcium carbonate additions （0. 4%,...Using sintered corundum as aggregate, white fused corundum powder, fused spinel powder, ultra-fine a-A12 0 3, nano calcium carbonate and hydrated alumina as matrix, effects of nano calcium carbonate additions （0. 4%, O. 8%, 1.2%, 1.6% and 2. 0% in mass, the same hereinafter） on modulus of rupture, thermal shock resi.~tanee and slag resistance of corundum -spinel castables after treating at different temperatures were studied. The results show that nano calcium carbonate decomposes at high temperatures and in-situ forms ealci- ant aluminates, which can significantly increase the CMOR and HMOR of the castables after treating at 800 -1 400 ℃ ; adding nano calcium carbonate obviously improves the thermal shock resistance of the castables, and has little influence on the high basicity slag resist- ance, however, significantly decreases the corrosion and penetration resistance to low basicity slag.展开更多
文摘Nel Noddings’ethics of care is an important lineage of Western moral education thought,which contains deep humanistic values.Service-learning advocates the equal importance of service and learning,and emphasizes more on the discovery of educational connotations in practice.Based on the social background of aging,this paper takes the“Care for the Elderly”service-learning program as an example,attempts to take the care ethics as the entry point,adopts interviews,questionnaires,and other research methods,and opens-up the service-learning practice path under the threshold of Nel Noddings’care education theory.
文摘Nel样分子I型(Nel-like type I molecular,NELL-1)是一种与人颅缝早闭症相关的外分泌型蛋白,近年来一系列体外及体内研究表明NELL-1更是一种非常有效的骨生长因子。与其他骨生长因子相比,NELL-1的生物学效应相对单一,其骨诱导活性也更具有特异性,同时它无法单独诱导异位骨组织形成,因此NELL-1可具有更高的生物安全性和精准性。NELL-1作为一种全新的生长因子在治疗各类骨组织缺损与骨再生方面具有广阔而良好的应用前景。本文就目前NELL-1在骨再生领域的应用及其作用机制研究的进展做一综述。
文摘Using sintered corundum as aggregate, white fused corundum powder, fused spinel powder, ultra-fine a-A12 0 3, nano calcium carbonate and hydrated alumina as matrix, effects of nano calcium carbonate additions （0. 4%, O. 8%, 1.2%, 1.6% and 2. 0% in mass, the same hereinafter） on modulus of rupture, thermal shock resi.~tanee and slag resistance of corundum -spinel castables after treating at different temperatures were studied. The results show that nano calcium carbonate decomposes at high temperatures and in-situ forms ealci- ant aluminates, which can significantly increase the CMOR and HMOR of the castables after treating at 800 -1 400 ℃ ; adding nano calcium carbonate obviously improves the thermal shock resistance of the castables, and has little influence on the high basicity slag resist- ance, however, significantly decreases the corrosion and penetration resistance to low basicity slag.
