Analysis on Typical Spatio-temporal Characteristics of Open-cast Mining and Its Countermeasures

In order to deal with the special spatio-temporal environmental changes encountered in the process of open-cast mining,taking Huolinhe No.1 Open-cast Mine as the research object,this paper studied its typical problems in river reconstruction and cultural relics protection.The study focused on eight key core aspects,including the design optimization of the spatial layout of the mining area,the accurate estimation of the mineral resources reserves,the scientific theoretical demonstration of the mining scale,the fine analysis and calculation of the stripping ratio,the comprehensive consideration of the transport distance and efficiency,the accurate judgment of the best time for the implementation of the transformation,the analysis and evaluation of the slope stability,and the overall planning of the production system.The results show that the extracted problem-solving strategies and scheme system for special mining conditions can not only provide specific and practical guidance for Huolinhe No.1 Open-cast Mine,but also serve as a valuable reference and practical reference for other open-cast mine enterprises facing similar challenges.

Nanocomposites composed of modified natural polymer and inorganic nanomaterial for safe,high-efficiency,multifunctional protection of paper-based relics

Paper-based relics as important carriers of human history and civilization have been facing severe damage problems,and their protection is a major project for cultural heritage restoration.So far,safe,high-efficiency,and multifunctional protection materials are still urgent to be developed.Herein,through screening a series of alkaline nano-oxides and cleverly combining the advantages of modified natural polymer(quaternized chitosan)and inorganic nanomaterials(Zn O),we successfully prepared their functional nanocomposites with multiple properties and pioneered their smart application for multifunctional protection of paper relics.By spraying loads,this kind of nanocomposites can effectively and safely inhibit the acid degradation of paper relics and long-term maintain a natural or weak basic state even under harsh accelerated aging conditions.Meanwhile,the coating of nanocomposites does not change the chromatic aberration but partially improves the hydrophobicity.Moreover,the mechanical properties of paper relics are reinforced up to more than one time for all-around tensile strength,folding endurance,and tearing strength.It is worth noting that the usage of nanocomposites can avoid the discoloration or fading of p H-sensitive pigments/dyes and prevent the blue/red inks from ink-spreading.By integrating the anti-microorganism effects of the two components,the nanocomposites have exhibited a broad antimicrobial capacity for both fungi(e.g.,Plectosphaerella cucumerina and Aspergillus unguis)and bacteria(e.g.,Staphylococcus aureus).The acquired knowledge not only represents an advanced step for designing functionalized inorganic/polymer nanocomposite but also sheds light on the multi-functional integrated protection of paperbased relics.

Temporalities and the conservation of cultural relic protection units:legislative,economic and citizen times of the Bugaoli community in globalising Shanghai

Since the establishment of treaty ports in the mid-19th century,the urban development of many Chinese cities,and notably of Shanghai,has been heavily influenced by global economic flows and global urban and architectural practices.In Shanghai,extensive lilong neighbourhoods stand as remnants of the treaty port era.Many of these historic districts are in close proximity to rapidly transforming areas of the city,creating civic tension around demolition,conservation and the redevelopment of colonial heritage.Examining the listed Bugaoli community in Shanghai’s old French Concession,the heritage strategies applied under the particular Cultural Relics Protection System(CRPS),and the discourse of local residents interviewed in the context of this project,this paper reveals the paradoxes around urban heritage conservation and urban development by considering three different temporalities:legislative time,economic time and citizen time.The paper argues that actors involved in heritage practices should consider both space and time related issues in urban heritage conservation.Historic communities such as Bugaoli experience conflicts between conservation and the demands of everyday life.They underline and require a heritage strategy that acknowledges diverse temporalities and balances legal norms,economic interests and the public’s demands.

The Origin and Vision of National Cultural Park Management Policy in China

Research on the evolution of cultural policy is the key in the field of public policy study,and it is also an important means to solve the problems that have emerged in cultural heritage management.The National Cultural Park is an innovative cultural heritage protection system proposed by Chinese leaders within the context of national rejuvenation and building a culturally-strong country campaign.From the perspective of system evolution theory,this paper systematically sorts out the ideas behind international heritage management and the evolutionary process of the Cultural Relics Protection Unit system,in an effort to explore the origin,innovation and vision of the National Cultural Park System.A review of the international heritage documents revealed that the principle of heritage protection has developed from“authenticity”to“integrity”,and the focus of the protection object has also changed from“monism”to“diversity”,which provided a theoretical background for the burgeoning National Cultural Park.The Cultural Relics Protection Unit system has been promoted as the most crucial cultural heritage management system in China.Therefore,this study sheds light on the evolution and limitations of the system that lays a practical foundation for the National Cultural Park System.There have been three stages in the history of China’s National Cultural Relics Protection Unit,namely,the creation of the system(1956–1965),the survival crisis of the system(1966–1977),and the rebirth and development of the system(1978 to the present),in which the main driving concepts of China's cultural heritage management have been sequentially elucidated as simple protectionism,tolerant conservatism and comprehensive developmentalism,respectively.Since the establishment of China’s Cultural Relics Protection Unit system,tremendous progress has been made not only in the enlightenment of the public’s mindset and but also in the development of system and culture.However,the changes in the institutional environment gradually exposed its limitations regarding cultural relic management and value expression.The National Cultural Park System is the fruit created by the internal contradictions of the cultural heritage system itself and the evolution of heritage theory.Its biggest innovation lies in the two core connotations of“integrated protection”and“integrated development”.In the future,as the National Cultural Park management system matures,a Chinese cultural heritage management system will take shape in which the National Cultural Parks become dominant and various cultural resources are utilized.Finally,the National Cultural Park will become a symbol of Chinese culture and will be internalized into the common belief system of the Chinese nation.