Assessing the resilience of water supply systems in Oman

Water systems in the Sultanate of Oman are inevitably exposed to varied threats and hazards due to both natural and man-made hazards. Natural disasters, especially tropical cyclone Gonu in 2007, cause immense damage to water supply systems in Oman. At the same time water loss from leaks is a major operational problem. This research developed an integrated approach to identify and rank the risks to the water sources, transmission pipelines and distribution networks in Oman and suggests appropriate mitigation measures. The system resilience was evaluated and an emergency response plan for the water supplies developed. The methodology involved mining the data held by the water supply utility for risk and resilience determination and operational data to support calculations of non-revenue water. Risk factors were identified, ranked and scored at a stakeholder workshop and the operational information required was principally gathered from interviews. Finally, an emergency response plan was developed by evaluating the risk and resilience factors. The risk analysis and assessment used a Coarse Risk Analysis (CRA) approach and risk scores were generated using a simple risk matrix based on WHO recommendations. The likelihoods and consequences of a wide range of hazardous events were identified through a key workshop and subsequent questionnaires. The thesis proposes a method of translating the detailed risk evaluations into resilience scores through a methodology used in transportation networks. A water audit indicated that the percentage of NRW in Oman is greater than 35% which is similar to other Gulf countries but high internationally. The principal strategy for managing NRW used in the research was the AWWA water audit method which includes free to use software and was found to be easy to apply in Oman. The research showed that risks to the main desalination processes can be controlled but the risk due to feed water quality might remain high even after implementing mitigation measures because the intake is close to an oil port with a significant risk of oil contamination and algal blooms. The most severe risks to transmission mains were found to be associated with pipe rather than pump failure. The systems in Oman were found to be moderately resilient, the resilience of desalination plants reasonably high but the transmission mains and pumping stations are very vulnerable. The integrated strategy developed in this study has a wide applicability, particularly in the Gulf area, which may have risks from exceptional events and will be experiencing NRW. Other developing countries may also experience such risks but with different magnitudes and the risk evaluation tables could provide a useful format for further work.

Viewing biofilms within the larger context of bacterial aggregations

The ‘Microbial Cities’ vision of bacterial biofilms has dominated our understanding of the development and functioning of bacterial aggregations for the past 20 years, during which active sludge, clumps, colonies, flocs, mats, pellicles, rafts, slimes, zooglea, etc. have been largely forgotten or ignored. Although the medically inspired developmental model of human pathogen biofilms has merits including providing a rationale for the development of anti-biofilm therapeutics, it fails to provide links to other types of bacterial aggregation that are commonly found in a wide range of natural and man-made environments. Possibly as a result, applied and environmental microbiologists tend to avoid the term ‘biofilm’ and use others such as ‘microbial mats’ instead. Here we challenge the simplistic planktonic (independent and free-swimming bacteria)-biofilm (sessile and co-operative bacteria) dichotomy, and consider biofilms within the larger context of bacterial aggregations. By placing biofilms into context, which we see as a continuum of aggregations or communities with varying abiotic and biotic properties, fundamental physical, biological, and evolutionary ecological processes that effect community development and function can no longer be considered unique to biofilms, but may also be important in other aggregations that develop over time and change in nature depending on prevailing conditions. By doing this, we will be better able to distinguish those processes which govern bacterial colonisation and ecological success in a wider sense from those that are unique to particular environments and specialised strategies.

New challenges for the EU internal security strategy

In recent years, the EU and its member states have experienced a number of changes, as well as challenges, in the areas of politics, economics, security and law. As these areas are interconnected, changes and challenges to any of them have implications for the others, as well as implications for the populations and institutions of the EU or those coming into contact with its international power and influence. This edited collection focuses primarily on security and law, particularly the EU’s internal security strategy. The EU’s Internal Security Strategy, adopted by the Spanish presidency early in 2010, followed the Lisbon Treaty in 2009, building on previous developments within the EU in the Area of Freedom Security and Justice (AFSJ) policy. The focus of the EU Internal Security Strategy is to prevent and combat “serious and organised crime, terrorism and cybercrime, in strengthening the management of our external borders and in building resilience to natural and man-made disasters”. The Internal Security strategy intersects and overlaps with the European Union’s Counter-terrorism strategy, the Strategy for the External Dimension of JHA, and the EU’s Security Strategy. The role of and interaction between these strategies, their supplementing documents, and their implications for crime, victims, the law, political relations, democracy and human rights, form the backdrop against which the chapters in this collection are written. Building on original research by its contributors, this collection comprises work by authors from a wide variety of academic and professional areas and perspectives, as well as different countries, on a variety of areas and issues related to or raised by the EU’s Internal Security Strategy, from intelligence-led policing to human trafficking and port security. This book examines, from a wide variety of disciplinary perspectives including law, geography, politics and practice, both this further refinement of existing internal provisions on cross-border crime, and the increasing external relations of the EU in the AFSJ.