The synthetic polymers are widely used as adhesives, consolidants and protective coatings in the conservation of historic relics. Although, compared to the natural polymers and adhesives, these materials present a better resistance against the microorganisms, most synthetic polymers remain appropriate sources of Carbon and energy for the growth of microorganism; in addition, the relics consolidated with these materials will still remain vulnerable to the microorganisms and fungi, leading to a sort of degradation whose progress will, nonetheless, be accelerated with the environmental factors and ultraviolet light. Therefore, preventing the microorganism from attacking the relics, as well as increasing their impact resistance against the environmental conditions are necessary. In this study, in order to maintain the antifungal properties in PolyVinyl Butyral (PVB), TiO2 nanoparticles were employed; anatase-type TiO2 nanoparticles were used in PVB to prepare the nanocomposites. Also, the Samples were made of Poplar wood (Populus spp.) in accord with the Bravery guidelines, treated by the Titanium Dioxide nanocomposite under vacuum conditions. Afterwards the samples were separately affected in the dark and under the daylight conditions by the wood white-rot fungi (Trametes versicolor) as a deterioration active, for the duration of seven weeks. The treated and untreated samples were placed under the accelerated aging condition (temperature, humidity and UV light). The results indicate that the wood samples treated with 1% of Nano-TiO2 (0.4g) in 5% PVB, placed in the dark, did not have any antifungal effect, while the amount of 2% (0.8g) could protect the wood against the white-rot fungus degradation in the darkness conditions. The inoculated samples with the amounts of 1%and 2% of Nano-Ti2O, in the light conditions, could also create antifungal properties in the treated samples with nanocomposite, and protected the wood against the white-rot fungus. The accelerated aging of the treated samples with consolidant without nanoparticles of Ti2O and the treated ones with nanocomposite under the heat, humidity and UV light conditions demonstrates that the treated samples were protected against the degradation, ultraviolet light and the environmental conditions. 

The urban developments of recent decades have caused a crisis in the urban management in many historical cities; In such a way that arbitrary actions related to historical urban landscapes severely distort the urban memory and make the historical urban identity illegible for future generations. In many historical urban spaces, one can observe unusual and unusual events with the historical space, such as: non-compliance with height privacy in the vicinity of historical places that have caused the view of the historical building and its surrounding context to be distorted, excessive intrusions and occupations in the historical space which leads to the loss of urban memory. Based on this, the main questions of the research are raised as follows: Why are such problems repeated and visible in spite of the concern of great theoreticians for the protection of historical cities? What is the reason for ignoring the principles of urban conservation and creating challenges that sometimes go as far as endangering world heritage? The research seeks to find an answer to such questions in the context of the historical city of Esfahan as an eastern example. The research method is combined, which includes historical, descriptive and causal methods, and the study tools include archival, library and field. The premise of the research is based on the fact that conservation and development together can pass the historical identity to be passed on to future generations. Therefore, despite the difficulty of recovering the damaged identity in urban spaces such as Esfahan, it is possible to prevent further destruction of historical heritage due to inconsistent development with protection in future actions by following guidelines. It seems that the reason for the failure of Esfahan in the conservation-oriented development process is the lack of attention and effort to maintain a coherent and integrated whole and the failure to maintain the connection between the components of the urban landscape of Esfahan and only focusing on specific buildings and registered heritage, which is rooted in the separation of protection "historical monument" from the protection of "historical city". On the other hand, the study in the space of historical cities shows the effects of "neoliberalism" in conservation under the title of "neoliberalism consevation" which, relying on a strong economy, has taken over the historical heritage in the cities as well as other current issues in human life.