Continuous detection of viable micro-organisms by chemiluminescence

System monitors quality of reclaimed water continuously and automatically. Incubated samples are compared with unincubated ones by measuring their respective chemiluminescence

Automated monitoring of recovered water quality

Laboratory prototype water quality monitoring system provides automatic system for online monitoring of chemical, physical, and bacteriological properties of recovered water and for signaling malfunction in water recovery system. Monitor incorporates whenever possible commercially available sensors suitably modified

A novel experimental technique and its application to study the effects of particle density and flow submergence on bed particle saltation

This research was sponsored by EPSRC grant EP/G056404/1 which is greatly appreciated.Peer reviewedPublisher PD

Tourism policy and destination marketing in developing countries: the chain of influence

Tourism marketers including destination marketing organisations (DMOs) and international tour operators play a pivotal role in destination marketing, especially in creating destination images. These images, apparent in tourist brochures, are designed to influence tourist decision-making and behaviour. This paper proposes the concept of a “chain of influence” in destination marketing and image-making, suggesting that the content of marketing materials is influenced by the priorities of those who design these materials, e.g. tour operators and DMOs. A content analysis of 2,000 pictures from DMO and tour operator brochures revealed synergies and divergence between these marketers. The brochure content was then compared to the South African tourism policy, concluding that the dominant factor in the chain of influence in the South African context is in fact its organic image

The social geography of childcare: 'making up' the middle class child

Childcare is a condensate of disparate social forces and social processes. It is gendered and classed. It is subject to an excess of policy and political discourse. It is increasingly a focus for commercial exploitation. This is a paper reporting on work in progress in an ESRC funded research project (R000239232) on the choice and provision of pre-school childcare by middle class (service class) families in two contrasting London locations. Drawing on recent work in class analysis the paper examines the relationships between childcare choice, middle class fractions and locality. It suggests that on the evidence of the findings to date, there is some evidence of systematic differences between fractions in terms of values, perspectives and preferences for childcare, but a more powerful case for intra-class similarities, particularly when it comes to putting preferences into practice in the 'making up of a middle class child' through care and education

Camp Lwandle: Rehabilitating a migrant labour hostel at the seaside

In southern African narratives of migrant labour, hostels and compounds are represented as typical examples of colonial and apartheid planning. Visual and spatial comparisons are consistently made between the regulatory power of hostels and those of concentration camps. Several of these sites of violence and repression are today being reconfigured as sites of conscience, their artefactual presence on the landscape being constructed as places of remembrance. In this trajectory, a space of seeming anonymity in Lwandle, some 40 km outside of Cape Town, was identified by the newly established museum, at the beginning of the twenty-first century, as a structure of significance. The migrant labour compound in Lwandle, of which Hostel 33 is the last remnant, was designed by planners and engineers and laid out as part of a labour camp for male migrant workers in the 1950s. This article explores the ambitious project initiated in 2008, by the Lwandle Migrant Labour Museum (and funded largely by the US Ambassadors Cultural Restoration Fund), to restore Hostel 33. Although Hostel 33 was not a very old structure, having been built in 1958/9, nor was it easily considered to have conventional architectural significance, its material presence in present-day Lwandle represents a reminder of the conditions of life in the labour camp. The article traces the work entailed in the restoration process through paying attention to both the built fabric and its materiality, and by giving an account of the explorations into finding ways to restore the hostel to the museum through making it into a site of significance. In place of the centrality of the building as the object of restoration, the work shifted to considering how the hostel could function most effectively as a stage and destination for the Museum’s narrations of the past. Retaining and maintaining Hostel 33 was less concerned with the fabric as an empirical fact of the past, than with its projection into an envisaged future for museum purposes.Department of HE and Training approved lis

Structure and dynamics of ring polymers: entanglement effects because of solution density and ring topology

The effects of entanglement in solutions and melts of unknotted ring polymers have been addressed by several theoretical and numerical studies. The system properties have been typically profiled as a function of ring contour length at fixed solution density. Here, we use a different approach to investigate numerically the equilibrium and kinetic properties of solutions of model ring polymers. Specifically, the ring contour length is maintained fixed, while the interplay of inter- and intra-chain entanglement is modulated by varying both solution density (from infinite dilution up to \approx 40 % volume occupancy) and ring topology (by considering unknotted and trefoil-knotted chains). The equilibrium metric properties of rings with either topology are found to be only weakly affected by the increase of solution density. Even at the highest density, the average ring size, shape anisotropy and length of the knotted region differ at most by 40% from those of isolated rings. Conversely, kinetics are strongly affected by the degree of inter-chain entanglement: for both unknots and trefoils the characteristic times of ring size relaxation, reorientation and diffusion change by one order of magnitude across the considered range of concentrations. Yet, significant topology-dependent differences in kinetics are observed only for very dilute solutions (much below the ring overlap threshold). For knotted rings, the slowest kinetic process is found to correspond to the diffusion of the knotted region along the ring backbone.Comment: 17 pages, 11 figure

‘Remembering as Forgetting’: Organizational commemoration as a politics of recognition

This paper considers the politics of how organizations remember their past through commemorative settings and artefacts. Although these may be seen as ‘merely’ a backdrop to organizational activity, they form part of the lived experience of organizational spaces that its members enact on a daily basis as part of their routes and routines. The main concern of the paper is with how commemoration is bound up in the reflection and reproduction of hierarchies of organizational recognition. Illustrated with reference to two commemorative settings, the paper explores how organizations perpetuate a narrow set of symbolic ideals attributing value to particular forms of organizational membership while appearing to devalue others. In doing so, they communicate values that undermine attempts to achieve equality and inclusion. Developing a recognition-based critique of this process, the discussion emphasizes how commemorative settings and practices work to reproduce established patterns of exclusion and marginalization. To this end, traditional forms of commemorative portraiture that tend to close off difference are contrasted with a memorial garden, in order to explore the potential for an alternative, recognition-based ethics of organizational commemoration that is more open to the Other