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This study explores the interplay between the UNESCO status and climate governance in World Heritage cities. With climate change posing significant threats to living urban landscapes, local governments and public actors strive to implement sustainable and resilient strategies. However, complications arise when cities attain the World Heritage status, complicating climate governance practices. Qualitative research, involving interviews with key stakeholders from the Climate and Monument Protection Departments in Lübeck, Regensburg, and Bamberg, reveals a negative impact of cultural heritage on climate governance. The study contends that, when harnessed effectively, cultural heritage can contribute to the sustainability and resilience of cities in addressing climate change. It emphasises the necessity for flexibility, collaboration, and a human-centric approach, advocating for a common understanding and prioritisation of human life within climate governance. In conclusion, this research underscores the importance of viewing heritage as a dynamic component integrated into cities' climate governance strategies.
Wind energy is a growing concern over the present awareness of lethal impact of green house gas emission. This energy source has been proven a promising alternative to fossil fuel based energy. Increased onshore wind capacity and decreased amount of low roughness wind sites has inspired the wind energy researchers to explore the possibilities of wind energy from high roughness sites such as urban area. Moreover, exhausted grid capacity between the wind energy producer from remote area and the consumer at city is also a major constrain for wind energy expansion. Driven by such motivation, this thesis has explored possibilities of wind energy conversion from buildings where energy is needed the most. Urban topography is known to be highly turbulent region considering its roughness characteristics.
Wind energy yield from urban aerodynamics is a vast arena of experimental research. Within the time frame of the thesis period and available opportunities, a brief description about the wind energy assessment modelling approach from urban flow was outlined. There are several possibilities of wind energy yield from the built structure, but only building integrated duct was focused in this thesis.
Time-averaged and global wind speed on the building integrated ducts, flow around the buildings was measured from wind tunnel and numerical analysis. Available wind energy yield and turbulence present in the locations measured from the flow was calculated based on the wind tunnel data and summarized with the pros and cons of the particular geometry. Elliptical duct configuration was found to achieve maximum energy yield from the omnidirectional free stream flow. However, simple rectangular duct configuration was determined as most efficient and optimized considering its simplicity, financial feasibility and relative energy yield with other duct configuration. The thesis also showed that on roof configuration is also very promising for wind energy exploration from the omnidirectional free stream flow.
Necessary recommendations were made based on available result for future development of the research approach. Scope and opportunities was mentioned. This investigation has proved that it is possible to extract limited amount of wind energy from building augmented ducts using concentrator effect of the building exterior. Thus, the thesis concluded that the wind energy yield from building augmented ducts using the concentrator effect of the building exterior is a promising renewable energy source.
Cultural heritage faces many types of threats such as neglect, conflicts, disasters caused by natural and human induced hazards, unplanned infrastructure projects, climate change, etc. Over time, a number of institutions, organisations, programmes and initiatives to address the issues related to heritage at risk through varied modes of interventions such as advocacy work, conservation efforts, funding, awareness-raising regarding particular sites, etc. have emerged. Despite the stimulus and support of the various institutions, organisations and initiatives, diverse threats continue to impact cultural heritage in present times with some factors amplifying more than before, leading to the subsequent damages to or losses of heritage assets. Though reasons for these issues are varied and complex, one of the important factors to look into is the agency of the diverse ‘Heritage at Risk’ programmes or initiatives. ICOMOS being one of the pioneers in this global discourse of threatened heritage, its role is strategically vital. 20 years after ICOMOS’s first attempts to initiate one of the first ‘Heritage at Risk’ programmes, this research is an opportunity to re-examine and analyse the effectiveness of ICOMOS’ ‘Heritage at Risk’ programme within the current organisational/ institutional landscape of initiatives in the field of heritage at risk, that ICOMOS is embedded in. It is also an opportunity to situate the programme within the diverse views of the heritage at risk framework and the continuing shifts in the foundational paradigms of the international discourse on heritage conservation. The purpose of this analysis is to guide programme improvement for optimising efforts in favour of cultural heritage at risk within and/ or beyond ICOMOS and improve their ability to contribute towards - safeguarding heritage at risk, increasing the resilience of cultural heritage and sustainable development.
The master thesis at hand examines the potential of district heating in Lusatia. The thesis follows the approach of first identifying technical and economic potentials in general and then transferring them to the study region. For the quantitative determination of district heating potential in Lusatia, the status quo is determined and a GIS-based analysis is carried out with regard to minimum heat demand densities. The extent to which district heating is suitable for climate-neutral heat supply will be investigated using the potential of renewable and waste heat energy sources. Furthermore, the regional economic effects of developing these potentials are examined. The results show that despite an overall decline in heat demand, there is potential to increase the relative share of district heating in Lusatia. In terms of climate neutrality, district heating in Lusatia offers special opportunities. Solar thermal energy and Power-to-Heat are of particular importance due to the rural character of Lusatia and its status as an energy region. From a regional economic perspective, climate-neutral district heating has a positive effect on value added and employment.
Lens epithelium derived growth factor (LEDGF), is known to be overexpressed in different solid cancers and cancer cell lines but is also involved in acquired immunodeficiency syndrome (AIDS) and diverse inflammatory diseases. Due to its chromatin-binding ability, it acts as a transcriptional coactivator, promoting anti-apoptotic pathways leading to increased tumor aggressiveness and chemotherapy resistance. In this thesis, the role of LEDGF in laryngeal cancer cells was investigated. Thus, a knock-out of LEDGF in HEp-2 cells was successfully generated by CRISPR/Cas9 technology. Moreover, LEDGF-deficient HEp-2 cells exhibited a decreased proliferation and migration, as well as an increased chemotherapy sensitivity towards topoisomerase II inhibitor etoposide. The DNA damage response was in more detail investigated, where LEDGF depleted cells showed a drastic reduction in the recruitment of downstream damage-response related proteins, more precisely replication protein A subunit of 32kDa (RPA32), and an increased amount of DNA fragmentation, highlighting the role of LEDGF in homology-directed DNA repair.
In addition, a efficient method was established to allow genomic tagging of LEDGF at its C-terminus with EGFP which enables the monitoring of LEDGF in living cells. Therefore, an efficient Cas9-mediated DNA DSB induction was supplemented with a DNA template containing homology arms to the C-terminus as well as the EGFP sequence to allow homology-directed repair. Subsequently, EGFP-expressing cells were FACS sorted and single cells expanded. Almost all test clones showed a homozygous genotype for LEDGF-EGFP fusion which exhibited the typical nuclear pattern of LEDGF.
Determination of specific metabolic activities of anammox bacteria and their sensitivity to oxygen
(2013)
The discovery of Anammox bacteria has bridged our knowledge gap in the nitrogen cycle. This is because it explained the direct conversion of nitrite and ammonium to nitrogen gas in many reducing natural environments. However, it has been found that the presence of oxygen is an important determinat factor for certain biochemical processes and distribution of organisms in the environment. In this work, two methodological approaches were used to investigate the specific metabolic activities of Anammox bacteria and their sensitivity to oxygen using a mixed biomass culture. Two laboratory-scale bioreactors were maintained and the biomass in the reactors served as the inoculum for the investigations. The molecular characterization of the biomass was done using the Fluorescence in situ hybridization (FISH) technique. The specific Anammox activity (SAA) and important inhibition kinetic parameter characterization were estimated while monitoring activities of the biomass using several batch experiments.
The results of the biochemical characterization revealed that several microbial activities such as denitrification, nitrification, dissimilatory nitrate reduction to ammonium and Anammox processes were competing in the bioreactors. These were observed in the analysis of effluent recirculation of the feed solutions in the bioreactors, however, the Anammox process was predominant. An optimum sonication time top of eight minutes was established used to determine the average optical density to dry mass (OD: DM) ratio of 0.87 in the biomass. The FISH characterization estimated 60.4 % ± 14.6% (mean ± standard deviation) Anammox bacteria concentration in the biomass of Bioreactor 1. The Anammox bacteria were made up C. Kuenenia Stuttgartiensis (̴ 78%) and the remaining C. Brocadia Fulgida.
The maximum SAA of 0.025 mgNH4-N (TSSAnammox-1. d-1) and 5.4 mgNH4–N (1011 CellAnammox-1. d-1) for ammonium, and 0.04 mg N2-N (TSSAnammox-1. d-1) and 9.4 mgN2–N (1011 CellAnammox-1. d-1) for nitrogen gas were found in the biomass. While a binding affinity constant Ki = 0.07 mgO2 /l, maximum half inhibition concentration IC50 ̴ 0.2 mg O2 /l and KM = 50 mg/l were estimated for the inhibition kinetics of oxygen in the biomass. The low Ki value found in this study indicates that oxygen is an efficient inhibitor for Anammox activities and concentrations between 0.4 - 0.64 mg O2 /l can lead to complete inhibition of Anammox activity. However, this process is reversible. Finally, the implication of this inhibition kinetic results might be important in tracing the distribution of Anammox processes in natural environments where fixed nitrogen is present.
The modern world is currently facing the energy revolution due to the decarbonisation challenges, promoted by the United Nations Framework Convention on Climate Change (UNFCCC). The well-established fossil fuel energy sources are being pushed from their leading market positions by renewable energy. European governments are some of the first to take decisive action towards decarbonisation and have already started reforming their economic sectors. New questions arising from such changes are influencing the role of Russia in supplying energy to the European market. The development of a market for renewable gas, especially renewable hydrogen in Europe, could potentially, in a long-term scenario up to 2050, be an option for Russia to help maintain demand and remain in the role as a main exporter.
The focus of this master thesis is put on the assessment of the current state of readiness of Russian and European energy systems for integration of Power-to-Gas (PtG) systems and for development of a carbon-free hydrogen market. German internal green hydrogen production capacity cannot meet the approximate demand in 2030 and 2050. However, the presence of the unutilised power capacity from Russian nuclear and hydro power plants opens a new opportunity to generate economically attractive hydrogen in large volumes via electrolysis with low electricity costs and zero carbon dioxide footprint.
In this thesis different supply chains for hydrogen export (Russia-Germany) are constructed and, as a result, the levelised costs of hydrogen (LCOH) are calculated and analysed. Hydrogen produced in Russia and transported to Germany via maritime shipment shows that it can already be competitive to the domestically produced green hydrogen in Germany. The main compartment of the LCOH is the electricity expenditure, which the current Russian industrial tariffs can reach up to 90% of the total costs. Further reductions of the electricity price for PtG systems are recommended in order to achieve lower results for the LCOH.
The outcome of this master thesis provides an overview on the current readiness of Russian and German hydrogen infrastructure and further recommendations on how it should be adapted. Finally a 2050 roadmap for the implementation of a hydrogen market in Russia and Germany is developed.
Tehran Bazaar has been the most influential marketplace in Iran, over the last two hundred years, since Tehran became the capital of the country. The Bazaar has been a significant socio-political agent in Iranian society. Nevertheless, less attention has been given to its internal atmosphere, where the bazaaris, have tried to conserve their traditions and preserve their heritage. One of these heritages are “hey’ats”, religious formations for holding mourning sessions in Muharram month, as a ritual in Shi’a Islam. “Hey’ats” give the guilds a sense of collective identity, they represent them, and also build a shared heritage for them.
The Drapers’ Guild was the first guild in Tehran Bazaar, founding a hey’at. They founded this hey’at in 1883 and named it “the Drapers’ Hey’at”. After the Islamic Revolution of 1979, the Drapers faced difficulties preserving their heritage. They were forced to displace the Mirza Mousa Mosque in the Bazaar. The Mosque was their center for holding religious sessions and was publicly known as “the Drapers’ Mosque”. Since they were attached to the Mosque, their displacement was perceived a loss of heritage. Later, they decided to build a new home, “the Drapers’ Hosseinieh”. They decided to implement the interior design of their lost Mosque in the new place. This strategy enabled them overcome “the traumatic experience of displacement and heritage loss.” Also, to safeguard their new place, they legally registered their hey’at as an institution, and they wrote a constitution for it. The attempts for modernization, led them to develop beneficiary activities, as well. In this research, a qualitative approach is applied, benefiting from multiple methodologies, including; ethnography, secondary sources, and visual methods. The researcher has attempted to outline the story of the Drapers in preserving their heritage. This study hopefully would be useful for similar traditional organizations, showing how continuity and heritage preservation are possible to achieve for communities having experienced a troubled past.
Conservation of heritage sites is an integral part of history and culture through which new generations can learn about their forefathers education, professionalism, cultural characteristics as well as their civilization. Almost all countries of the world tend to conserve their historical sites for their own generations and travellers from abroad. Despite Bangladeshs economy is becoming stronger, it is not paying enough attention to the development of archaeology to conserve its heritage sites. Unlike many other developing countries, Bangladesh tends to considers it a luxury to preserve it’s heritage sites. It is mainly because of the scarcity of land. The tiny country has a huge population (about 180 million), the density of which is perhaps the highest in the world.
Apart from some very significant heritage sites, most others are awfully neglected. Lack of education and awareness among the respective local people and other stakeholders are also responsible for most of the heritage sites facing threats of demolition, vandalism, losing authenticity and integrity.
Panamnagar, the case study for this thesis paper, is not apart from the above scenario. It is the last surviving intake city of lost Bengal. The place witnessed Mughal emperor, British rule, the partition of Bengal, Liberation war of Bangladesh, Hindu-Muslim riot, illegal habitation of people, forced eviction and abundance. The historic city went through lots of historical events and is still standing as a testimony to the golden era of Bengal. Currently, this heritage site is facing multiple threats to its existence and authenticity. The city is vacated by the authority - the Department of Archaeology. But as the local people are not aware of the historic value of the site, they are not at all cooperating with the authority. Meanwhile, the authority is trying to incorporate adaptive reuse of the site to give life to it again and collect revenue for the maintenance. But they are doing it without assessing the cultural significance of the site properly, which could be a potential threat for the authenticity of the heritage site. Thus, this paper has focused on assessing the cultural significance of the heritage site, with a hope that it will help the authority to make policy decisions for the conservation of the site more cautiously. To assess the cultural significance properly, history and architectural significance are described briefly. A site analysis has been conducted to understand the current site condition properly. The paper concludes with statements in support of the cultural significance of Panamnagar site and recommends appropriate conservation tools to sustain its significance.
The World Heritage List, created in 1972 by the Convention Concerning the Protection of the World's Cultural and Natural Heritage, exhibits few cultural sites younger than
the signing of the convention, as well as everyday structures which comprise the contemporary urban life.
This idea of heritage as something related to the ancient not only is manifested in the international sphere but has also permeated national views, weakening awareness for discreet heritage, which compete with designs from famous architects or monumental structures, giving the impression that grandeur and looks are highly coveted. This does not only discard relevant events of the mid-late 20th century attached to smaller constructions that had impacts on different cultures, but also integral components of urban fabric. Furthermore, these approaches towards heritage relevance resonate within the local populations, who, taking as examples how heritage is treated and approached in an international context, tend to overlook structures that are considered aesthetically displeasing because they do not adhere to this traditional scheme seen in the heritage field.
From here extends the idea of analyzing case studies that fall within overlooked heritage from a new angle: one of valuating aesthetic displeasure. The thesis will focus
on individual and serial constructions of the 20th century commonly seen as displeasing due to their typologies and styles but also due to their formal characteristics,
redirecting the attention from those considered aesthetically pleasing and grandiose towards otherwise ignored built heritage. Additionally, it will address the perceptions of such structures in the context of the international heritage and conservation spheres, to present how these structures are currently not fully appreciated within the traditional idea of heritage due to their looks and commonality. This approach does in fact overlook, and even relegate, those buildings that do not fit into the preconceived idea of aesthetics, denying the opportunity to explore and find their potential for heritage value.