16 research outputs found
Experience, narrative and interaction in TV-centred communication
Based on the view that changes in user expectations and social demographics alter the traditional use of TV this paper investigates the notion of experience, narrative and interaction in TV-centred communication. We have a look at synchronous and asynchronous consumption of expert as well as user-generated content. We then investigate participatory elements that enhance the feeling of social belonging and togetherness in particular when TV users are separated by time and space
Approximation-based integral versus differential isoconversional approaches to the evaluation of kinetic parameters from thermogravimetry: kinetic analysis of the dehydration of a pharmaceutical hydrate
The relative accuracies of approximation-based
integral versus differential isoconversional approaches for
âactualâ E determination were investigated on experimental
dehydration data of roxithromycin monohydrate from
thermogravimetric (TG) analysis. The dehydration kinetic
parameters and the relationship to the structural characteristics
of the monohydrate and anhydrate forms from
differential scanning calorimetry (DSC) and single-crystal
X-ray diffractometry (SC-XRD) are also reported. Integral
methods versus the differential Friedman isoconversional
method evaluated E correspondences in both iso- and nonisothermal
TG methods. The reliability in E from Friedman
approached that of estimates from current most accepted
integral isoconversional methods and was even superior to
methods (for non-isothermal studies) that employ an
approximation to the temperature integral (modified Kissingerâ
AkahiraâSunose, SenumâYang fourth degree).
Structural characterization (DSC, SC-XRD) and kinetic
analysis from generalized kinetic master plots concluded
that coordinated water occupied interlinked voids in crystal
structure which may have facilitated the multidimensional
diffusional loss of water upon heating without disruption of
the crystal structureNelson Mandela
Metropolitan University (NMMU); National Research Foundation
(NRF