This paper is focused on discussing the case of Las Loras UNESCO Global Geopark,in Spain,as an example to show the contribution of Geoparks to the dissemination of science and the relevance of preserving geoheritage b...This paper is focused on discussing the case of Las Loras UNESCO Global Geopark,in Spain,as an example to show the contribution of Geoparks to the dissemination of science and the relevance of preserving geoheritage by implementing simple measures based on communication and prevention.Natural and anthropic hazards derived from climate change are endangering heritage and the well-ness of the society.Geoheritage is vulnerable.Nowadays we are witnessing the destruction of monuments with high emotional significance due to wars,but climate change is also contributing to the loss of the same cultural heritage.Prevention is often the best way to protect geoheritage from disappearing and society is the best agent to implement preventive measures.Citizens are often unaware of the important treasures they have around them.Geoparks have been a great tool to bring awareness in society,since by involving the public in the whole process of recognition and promotion,they protect the space and the cultural and economic values associated with them.It is important to communicate the initiatives taking place in the Geoparks to explain the importance of geology and the risk of losing the geoheritage if natural hazards increase.Las Loras study is a good practice to implement in other Geoparks.展开更多
The glass-ceramics were prepared with the spodumene mineral as the main raw material,and the effects of ZrO_(2)replacing TiO_(2)on the samples were systematically investigated.The results show that the substitution of...The glass-ceramics were prepared with the spodumene mineral as the main raw material,and the effects of ZrO_(2)replacing TiO_(2)on the samples were systematically investigated.The results show that the substitution of ZrO_(2)for TiO_(2)is not conductive to precipitate𝛽β-quartz solid solution phase,but can improve the transparency and flexural strength of glass-ceramics.And the glass-ceramic with the highest visible light transmittance(87%)and flexural strength(231.80 MPa)exhibits an ultra-low thermal expansion of-0.028×10^(-7)K^(-1)in the region of 30-700℃.展开更多
文摘This paper is focused on discussing the case of Las Loras UNESCO Global Geopark,in Spain,as an example to show the contribution of Geoparks to the dissemination of science and the relevance of preserving geoheritage by implementing simple measures based on communication and prevention.Natural and anthropic hazards derived from climate change are endangering heritage and the well-ness of the society.Geoheritage is vulnerable.Nowadays we are witnessing the destruction of monuments with high emotional significance due to wars,but climate change is also contributing to the loss of the same cultural heritage.Prevention is often the best way to protect geoheritage from disappearing and society is the best agent to implement preventive measures.Citizens are often unaware of the important treasures they have around them.Geoparks have been a great tool to bring awareness in society,since by involving the public in the whole process of recognition and promotion,they protect the space and the cultural and economic values associated with them.It is important to communicate the initiatives taking place in the Geoparks to explain the importance of geology and the risk of losing the geoheritage if natural hazards increase.Las Loras study is a good practice to implement in other Geoparks.
文摘The glass-ceramics were prepared with the spodumene mineral as the main raw material,and the effects of ZrO_(2)replacing TiO_(2)on the samples were systematically investigated.The results show that the substitution of ZrO_(2)for TiO_(2)is not conductive to precipitate𝛽β-quartz solid solution phase,but can improve the transparency and flexural strength of glass-ceramics.And the glass-ceramic with the highest visible light transmittance(87%)and flexural strength(231.80 MPa)exhibits an ultra-low thermal expansion of-0.028×10^(-7)K^(-1)in the region of 30-700℃.
