Waste to power

ABSTRACT: There has been a growing trend towards the use of biomass as a primary energy source, which now contributes over 54% of the European pulp and paper industry energy needs [1]. The remaining part comes from natural gas, which to a large extent serves as the major source of energy for numerous recovered fiber paper mills located in regions with limited available forest resources. The cost of producing electricity to drive paper machinery and generate heat for steam is increasing as world demand for fossil fuels increases. Additionally, recovered fiber paper mills are also significant producers of fibrous sludge and reject waste material that can contain high amounts of useful energy. Currently, a majority of these waste fractions is disposed of by landspreading, incineration, or landfill. Paper mills must also pay a gate fee to process their waste streams in this way and the result of this is a further increase in operating costs. This work has developed methods to utilize the waste fractions produced at recovered fiber paper mills for the onsite production of combined heat and power (CHP) using advanced thermal conversion methods (pyrolysis and gasification) that are well suited to relatively small scales of throughput. The electrical power created would either be used onsite to power the paper making process or alternatively exported to the national grid, and the surplus heat created could also be used onsite or exported to a local customer. The focus of this paper is to give a general overview of the project progress so far and will present the experimental results of the most successful thermal conversion trials carried out by this work to date. Application: The research provides both paper mills and energy providers with methodologies to condition their waste materials for conversion into useful energy. The research also opens up new markets for gasifier and pyrolysis equipment manufacturers and suppliers.

Political leadership in France:from Charles de Gaulle to Nicolas Sarkozy

Political Leadership in France analyzes changes which have taken place over the last 50 years in French politics. When Charles de Gaulle came to power in 1958 the drama surrounding the Fourth Republic's collapse and the focus on an exceptional individual meant that he was able to confer a very particular style of leadership on the new Fifth Republic. De Gaulle's 'performance' was such that he transformed the nature of leadership politics in France, increasing the scope for personal leadership and the emphasis upon the exalted leader. This had major implications for the republic's institutions and for the role of political parties. The five Presidents who came after him – Pompidou, Giscard, Mitterrand, Chirac, and Sarkozy, as well as contenders for the presidency such as Segolene Royal and François Hollande – have each capitalized upon their own political 'persona' and their relationship to the French people. Gaffney takes a new approach to the subject, looking at the mythological and cultural as well as institutional conditions of political performance. This paperback edition includes a new preface.

Beyond power:unbridging Foucault and Weber

Today, very few would doubt that there are plenty of reasons to liken Weber’s and Foucault’s theories of power. Nevertheless, their respective works have divergent ethical and ontological preoccupations which should be reconsidered. This paper explores Foucault’s account of a historical episode in Discipline and Punish and Weber’s theory of life spheres, uncovering evidence that there is a need to reassess the conceptual bridges which have been built so far. The exploration reveals a radical difference between a monological theory of power (Foucault) and a multidimensional approach to power (Weber). Yet by unbridging the two thinkers and focusing on other aspects of their theories along with their ideas about power, we also find that alternative links between the two frameworks may offer a more promising critical theory.

Neural network control of a gas turbine

In this paper we explore the practical use of neural networks for controlling complex non-linear systems. The system used to demonstrate this approach is a simulation of a gas turbine engine typical of those used to power commercial aircraft. The novelty of the work lies in the requirement for multiple controllers which are used to maintain system variables in safe operating regions as well as governing the engine thrust.

Solitons: permanent waves

Communications engineers are learning to create an electromagnet wave at will, to transmit information. This wave, the optical soliton, is the subject of astounding recent developments in nonlinear optics and lasers. The author describes the principles behind the use of solitons in optical communications and shows that in the context of such communications the most important property of solitons is that they are extremely stable. Not only do they not disperse, but an encounter with a perturbation (e.g. a joint in optical fibre) will usually leave the soliton unaltered.

The Sarkozy effect: France’s new presidential dynamic

The election on 6 May 2007 of Nicolas Sarkozy as President of the Republic ushered in the promise of a new era in France. Sarkozy’s presidency follows those of the Socialist François Mitterrand (1981-95) and the neo-Gaullist Jacques Chirac (1995-2007), who together occupied France’s highest political office for more than a quarter-century. From the outset, Sarkozy’s presidential campaign was predicated on the need for change in France, for a “rupture” with the past; and his emphatic victory against the Socialist Ségolène Royal gave him a mandate to effect this. The legislative elections of June 2007, by assuring a strong majority in the National Assembly for Sarkozy’s centre-right Union pour un Mouvement Populaire (UMP), left the way clear for implementing the new President’s reform agenda over the next five years. This article examines the political context within which Sarkozy was elected to power, the main proposals of his presidential program, the challenges he faces, and his prospects for bringing real change to France.

Leadership through intellect:the meaning of leadership in the intellectual history of nineteenth and early twentieth century Germany

This study examines the understanding of leadership in Germany, as it developed throughout the nineteenth and early twentieth century. The investigation is based on the work of contemporary writers and thinkers, as well as on the leadership styles of key political figures. Given the ideological connotations of the term "Führung" in post-war Germany, the aim is to reconsider the meaning of leadership, with particular reference to the alternative notion of spiritual guidance. The rise to power of Napoleon I fundamentally influenced the understanding of leadership in Germany, as is demonstrated through an analysis of the Napoleonic reception in contemporary literature. Despite polarised responses, the formation of the heroic ideal may be identified, the quest for spiritual guidance having become subordinate to the charismatic legitimisation of political authority. As advocated by Thomas Carlyle, the mid to late nineteenth century witnessed the realisation of this ideal through Bismarck. The intellectual response to this development is characterised by the work of Wagner, Burckhardt and Nietzsche. In different ways each figure emphasised the need to redefine greatness and to seek spiritual guidance from alternative sources. The reflection on leadership in the early twentieth century is traced through the work of Harry Graf Kessler and the circles around Stefan George. Hitherto unpublished material is examined, revealing both the influences of nineteenth century thought and reactions to the "persönliches Regiment" of Wilhelm II. The intellectual debate culminates in Max Kommerell's 1928 study Der Dichter als Führer. Read in conjunction with unpublished notes and correspondence, this provides new insights into Kommerell's thought. The concept of poetic leadership constitutes a potential spiritual and intellectual alternative to the ideal of the political "Führer" which dominated the forthcoming era. It therefore remains of contemporary significance and may contribute to a broader discussion of the leadership dilemma in modern Germany.

Surviving in violent conflicts: Chinese interpreters in the second Sino-Japanese War (1931-1945)

In the past decade interpreting studies has gradually adopted a sociological perspective, taking into account social and cultural factors that affect interpreters actual behaviour in different settings. However, there have been few studies of interpreters practices as forms of social interaction, especially of the ways in which they become professionals and operate as social agents. Drawing upon Pierre Bourdieus theory of practice, this thesis aims to offer a contribution to the history of interpreting by examining the professional training and practices of Chinese interpreters during the Second Sino-Japanese War (1931-1945). On the basis of Bourdieus concept of field, this thesis reconstructs three competing fields dominated by three political and military powers: the Chinese Kuomingtang (KMT) government, the Chinese Communist Party, and the Japanese forces. By investigating interpreters training, employment and practices within these three fields, the thesis examines how the interpreting profession was affected by shifts in foreign policy, and how interpreters professional habitus were formed through their training and interaction with other social agents and institutions. It then highlights the interpreters active position-taking in pursuit of individual interests by examining particular interpreters career development through case studies of two interpreters, Xia Wenyun and Yan Jiarui, who served the Japanese forces and the Chinese KMT government, respectively. The study shows that the practices of the interpreters were broader than the scope of language transfer. In order to survive violent conflicts, interpreters often intertwined their interpreting with other political and professional activities. For them, interpreting was not a mere linguistic practice, but a strategy for self-protection, a route to power, or just a chance for a better life. Frequently crossing social, political and military borders, interpreters sometimes played a crucial cushioning role by protecting local residents from loss of life and property during the war.

Fixed bed downdraft gasification of paper industry wastes

The two main wastes generated from secondary fibre paper mills are rejects (composed mainly of plastics and fibres) and de-inking sludge, both of which are evolved from the pulping process during paper manufacture. The current practice for the disposal of these wastes is either by land-spreading or land-filling. This work explores the gasification of blends of pre-conditioned rejects and de-inking sludge pellets with mixed wood chips in an Imbert type fixed bed downdraft gasifier with a maximum feeding capacity of 10kg/h. The producer gases evolved would generate combined heat and power (CHP) in an internal combustion engine. The results show that as much as 80wt.% of a brown paper mill's rejects (consisting of 20wt.% mixed plastics and 80wt.% paper fibres) could be successfully gasified in a blend with 20wt.% mixed wood chips. The producer gas composition was 16.24% H, 23.34% CO, 12.71% CO 5.21% CH and 42.49% N (v/v%) with a higher heating value of 7.3MJ/Nm. After the removal of tar and water condensate the producer gas was of sufficient calorific value and flow rate to power a 10kWe gas engine. Some blends using rejects from other mill types were not successful, and the limiting factor was usually the agglomeration of plastics present within the fuel.

Extreme events, organizations and the politics of decision making

Purpose – Threats of extreme events, such as terrorist attacks or infrastructure breakdown, are potentially highly disruptive events for all types of organizations. This paper seeks to take a political perspective to power in strategic decision making and how this influences planning for extreme events. Design/methodology/approach – A sample of 160 informants drawn from 135 organizations, which are part of the critical national infrastructure in the UK, forms the empirical basis of the paper. Most of these organizations had publicly placed business continuity and preparedness as a strategic priority. The paper adopts a qualitative approach, coding data from focus groups. Findings – In nearly all cases there is a pre-existing dominant coalition which keeps business continuity decisions off the strategic agenda. The only exceptions to this are a handful of organizations which provide continuous production, such as some utilities, where disruption to business as usual can be readily quantified. The data reveal structural and decisional elements of the exercise of power. Structurally, the dominant coalition centralizes control by ensuring that only a few functional interests participate in decision making. Research limitations/implications – Decisional elements of power emphasize the dominance of calculative rationality where decisions are primarily made on information and arguments which can be quantified. Finally, the paper notes the recursive aspect of power relations whereby agency and structure are mutually constitutive over time. Organizational structures of control are maintained, despite the involvement of managers charged with organizational preparedness and resilience, who remain outside the dominant coalition. Originality/value – The paper constitutes a first attempt to show how planning for emergencies fits within the strategy-making process and how politically controlled this process is.

Solitons: permanent waves

Communications engineers are learning to create an electromagnet wave at will, to transmit information. This wave, the optical soliton, is the subject of astounding recent developments in nonlinear optics and lasers. The author describes the principles behind the use of solitons in optical communications and shows that in the context of such communications the most important property of solitons is that they are extremely stable. Not only do they not disperse, but an encounter with a perturbation (e.g. a joint in optical fibre) will usually leave the soliton unaltered.

How education should link with career paths

How good is your pharmacy practice? And what does “good” look like? Take a look back at the education and training you have received in your career to date. Has it stood you in good stead? Certainly there is a need to establish a model of professional education and development that produces good pharmacists — you should be able to demonstrate your competence regardless of your sector of work. It may help if we move away from the view that excellence in pharmacy practice is primarily defined by where you practise and the kind of job that you do. The Modernising Pharmacy Careers programme’s aspirations to integrate the undergraduate degree with the preregistration training year are bold and to be applauded — provided the outcome delivers changes that are more than superficial. The new model needs to deliver greater integration of education with practice, while retaining an adequate science base. Theory should be put into the context of practice-based, cross-sector learning needs and opportunities. For example, is the classroom really the best environment in which to learn dispensing? Pharmacokinetic theory could be put into context through creatively designed work placements. And it might make more sense to learn patient counselling in a community pharmacy, and so on. Is it resources we lack to make this happen? Or do we lack the collective will to be imaginative, to be radical and to conceive new approaches to professional education? Implicit in this new approach to education is the expectation that pharmacists should teach and mentor and, conversely, that those who teach should also engage in relevant practice. University education must produce graduates whose knowledge and competence are useful to employers. Moreover, graduates must be adequately prepared to enter any area of the profession endowed with professional self-confidence (something, arguably, that needs further development within the pharmacy psyche). Of course, becoming qualified is just the beginning. Post-qualification, pharmacists need structured career paths that foster this professional confidence, support learning and ensure recognition. To this end, the Royal Pharmaceutical Society-led professional curriculum group is working to define knowledge, skills and experience for all areas of advanced practice. More than ever, the profession needs to adopt a culture of learning, teaching and practice research that is unified. The question is: how do we move away from merely collecting qualifications (trophies) to developing meaningful careers? Pharmacists in all areas and at all levels of the profession need to consider their own willingness to make this shift. The RPS and MPC are leading the way, but are we following?

France in the Hollande Presidency:the unhappy Republic

An analysis of the first half of François Hollande's five-year presidential term that examines the strengths and weaknesses of presidential politics following the Left's return to power in 2012 and puts forward an interpretation of the underlying nature of contemporary French politics, and the French Fifth Republic.

An interdisciplinary approach to designing and evaluating a hybrid solar-biomass power plant

Purpose: Energy security is a major concern for India and many rural areas remain un-electrified. Thus, innovations in sustainable technologies to provide energy services are required. Biomass and solar energy in particular are resources that are widely available and underutilised in India. This paper aims to provide an overview of a methodology that was developed for designing and assessing the feasibility of a hybrid solar-biomass power plant in Gujarat. Design/methodology/approach: The methodology described is a combination of engineering and business management studies used to evaluate and design solar thermal collectors for specific applications and locations. For the scenario of a hybrid plant, the methodology involved: the analytical hierarchy process, for solar thermal technology selection; a cost-exergy approach, for design optimisation; quality function deployment, for designing and evaluating a novel collector - termed the elevation linear Fresnel reflector (ELFR); and case study simulations, for analysing alternative hybrid plant configurations. Findings: The paper recommended that for a hybrid plant in Gujarat, a linear Fresnel reflector of 14,000 m2 aperture is integrated with a 3 tonne per hour biomass boiler, generating 815 MWh per annum of electricity for nearby villages and 12,450 tonnes of ice per annum for local fisheries and food industries. However, at the expense of a 0.3 ¢/kWh increase in levelised energy costs, the ELFR can increase savings of biomass (100 t/a) and land (9 ha/a). Research limitations/implications: The research reviewed in this paper is primarily theoretical and further work will need to be undertaken to specify plant details such as piping layout, pump sizing and structure, and assess plant performance during real operational conditions. Originality/value: The paper considers the methodology adopted proved to be a powerful tool for integrating technology selection, optimisation, design and evaluation and promotes interdisciplinary methods for improving sustainable engineering design and energy management. © Emerald Group Publishing Limited.