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Now showing items 1-8 of 8
Dissertation
Analysis and Projection of spatio-temporal Drought and Climate Change Impacts on Groundwater Resources and Surface-Groundwater Interactions for three Iranian Case Studies
(2018-08)
Der Klimawandel und deren Variabilität, wie z.B. die Dürre, wirken sich auf die Wasserressourcen und insbesondere auf die wertvolle Grundwasserressource aus, die im Iran mehr als 80% des Wasserbedarfs aller Bereiche (Landwirtschaft, Haushalt und Industrie) ausmacht. Es ist von größter Bedeutung, Anpassungsstrategien zur Bewältigung dieser Probleme zu finden, um ein nachhaltiges Wasserressourcenmanagement sicherzustellen. In dieser Hinsicht sind physikalisch basierte hydrologische Modelle gekoppelt mit Grundwassermodellen ...
Dissertation
Zum Einfluss der Wechselwirkung zwischen Schalmaterial, Trennmittel und Beton auf die Eigenschaften von Sichtbetonflächen
(2018)
Sichtbetonflächen unterliegen hohen Anforderungen an das Erscheinungsbild. So soll die Farbgebung gleichmäßig und die Oberfläche porenarm sein - dabei variieren die Anfor-derungen mit der geforderten Sichtbetonklasse. Dies erfordert ein hohes Maß an Können bei der Herstellung sowie dezidierte Kenntnisse über Leistungsfähigkeit und Wechselwirkungen der eingesetzten Materialien. Die Erfahrungen aus der Praxis zeigen jedoch, dass die gezielte und gleichmäßige Herstellung von Sichtbetonflächen schwierig ist. Ziel dieser ...
Dissertation
Virtual portfolios for earthquake insurance related risk simulations
(2018-04-05)
Seismic Risk, a combination of Hazard, Vulnerability and Loss, is becoming a mainstream topic due to an increase in the losses and damage caused by earthquake related effects worldwide.
Therefore, it has become an important aspect for insurer and reinsurers since it is extremely difficult to assess due to the lack of the necessary data compared, for example, to car insurance (chapter 1). As described in chapter 2, where the state of the art of seismic risk assessment and simulation is described alongside a more ...
Dissertation
Design procedure for shear panels and their connections in Hysteretic Device Systems
(2018-07)
Every year, earthquakes kill thousends of people and destroy or damage many buildings and structures worldwide. It was observed that the damages induced by earthquakes in developed countries (e.g., Japan and the USA) are less when compared to less developed countries such as Iran, Turkey or Pakistan. Comparing the earthquake damages indicated that even in new and modern buildings, some problems can be seen facing large earthquakes.
Every earthquake has proved the vulnerability of many structures to damages. A lot ...
Dissertation
Hydro-economic Modeling for Optimization of Sustainable Water Management of a River Basin in the Wake of Climate Change: Case Study of the Zarrine River Basin (ZRB), Iran
(2018-11)
Food and water security will be a great future challenge due to the growth of population and unsustainable water usage. The renewable water resources in the MENA region including Iran, are expected to decline. This situation is exacerbated by the increasing demands and the rising climate variability in the wake of global climate change affecting adversely the available water resources. This thesis research attempts to evaluate the impacts of climate change and water demands on the hydrological and environmental ...
Dissertation
Estimating the Effects of Climate Change on the Water Resources in the Upper Indus Basin (UIB)
(2018)
Water balance calculations and spatially distributed rainfall-runoff models require high-resolution climatic datasets as the primary input, however, in the Upper Indus basin (UIB), it is rare to find in-situ observational climate data which have spatial, altitudinal and temporal coverage, suitable enough for distributed hydrological investigations and so for the assessment of climate-change’s hydrological impacts. The average precipitation amounts over the UIB are unrealistically low to sustain the observed discharge ...
Dissertation
Influence of Calcium Aluminate Cement and Ground Granulated Blast Furnace Slag on the Synthesis of Rice Husk Ash-Based Geopolymer Mortars
(2018-02-26)
The manufacture of Portland cement is energy intensive and is associated with carbon dioxide emission of approximately 7% of total global emission. The process also produces pollution in the forms of dust, noise, and vibration with operating machinery during blasting in quarries. Geopolymer material is formed through the reaction of silica and alumina oxides with alkali activator and has appeared as a viable alternative to the Portland cement in the construction field due to good properties such as high compressive, ...
Dissertation
Climate Change Impact Assessment of Basin-scale Water Allocation and Management in the Karkheh River Basin, Iran
(2018-09-21)
Hydrological research is intended to improve our understanding of hydrologic processes, the role of hydrological systems in providing water for ecosystems and society, and of the water cycle in the functioning of the earth system. The proper understanding of the hydrology of arid and semi-arid regions is becoming increasingly important, due to diminishing projections of water resource availability in response to global environmental changes. The main objective of this thesis study is to investigate the development ...