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Effects of electrostatic charge on particle adhesion, cohesiveness and its influences on powder flow properties
Full text linkCharacterising powder flowability can be challenging e.g., for pharmaceutical formulations when only a small quantity of samples is available. For the case, a novel method has been developed at the Wolfson Centre using a few milligrams of powders. The technique applies Bond number to represent powder cohesiveness, which detects particle adhesion at median particle size using a mechanical surface energy tester. The method shows promising results for powder flowability prediction and other flow properties for a wide range of powders varying in particle properties such as particle size, particle shape and particle density. However, a study on different grades of Acetaminophen showed that the predictions did not match the results measured using a shear cell tester (Particle Flow Tester, Brookfield), which revealed that there must be other contribution forces in the cohesiveness measurements.
The suspected cause is believed to be the impact of electrostatic charge on powders, as electrostatic force can significantly contribute to the measurement of particle adhesion. The current study focused on the electrostatic charge measurements of acetaminophen dense and acetaminophen micronized with different particle size distributions. The charge measurements have been compared to the charge measurement for other common materials such as Lactose, Avicel and Calcium Carbonate, which all give a good prediction of powder flow properties. The comparison shows that both the acetaminophen dense and the acetaminophen micronized have very significant charges under normal handling conditions compared to the other common materials. The charge level of the acetaminophen can be 20 times higher than that of the different materials measured. If a charge level is significant, the electrostatic charge can strongly influence the adhesion measurement, but it will not appear in a shear cell test as the consolidation force overtakes it.
It is concluded that electrostatic charge can be a strong contributor to particle adhesion, which can influence powder flow properties at low consolidation stress; it will not be significant in a shear cell test due to the high consolidation stress applied
East Greenwich Housing and Health Walking Tour
Full text linkThis short walking tour is aimed at University of Greenwich public health and housing students. It was developed by Jill Stewart and Zoe Hendon as part of a series
Safer roads through citizen partnerships: enhancing road safety through Community Speedwatch volunteers [ProjectEDWARD]
Full text linkPowerpoint Presentation - No Abstract Available.
Examining digital, business and brand sustainability post-COVID-19: a perspective into a sustainable creative economy
Full text linkPowerpoint Presentation - No Abstract Available
Creating cultural change in large organisations: why do HE staff enact equality ‘Good Practice’?
No full textCreating cultural change within large organisations is a complex process that involves action across all levels of the institution. In the context of incomplete and uneven processes of marketisation, ‘top-down’ managerial approaches pose further challenges for organisational change in the UK Higher Education sector. Drawing on a study exploring the implementation of ‘good practice’ recommendations for addressing BAME (Black and Minority Ethnic) or GEM (Global Ethnic Majority) awarding and continuation gaps at a post-1992 institution in England, we suggest that individual and peer-driven initiatives might be more effective at driving change within HE, rather than external ‘top-down’ approaches that risk demotivating staff. Through our discussion of what drives equality work in universities, we highlight the power of harnessing the autonomy, innovation and commitment of HE staff and aligning equality work with their own existing personal values and identities
Driving small business social impact and innovation via design thinking and GenAI integration
Full text linkPurpose
This study explores the opportunity to integrate generative artificial intelligence (GenAI) with design thinking in driving social impact and innovation for small businesses. Given the resource constraints often faced by small businesses, design thinking promises an accessible approach to effectively accelerating problem-solving, product development, and process improvement. The emergence of GenAI presents a potential to further enhance these processes.
Conceptual approach
The study develops a conceptual framework by synthesising the bodies of literature on small business social impact and innovation, design thinking, and GenAI, to identify key constructs and relationships. These insights are integrated into a framework that maps concrete GenAI applications onto design thinking, specifically via its LUMA system approach of ‘looking’, ‘understanding’, and ‘making’ phases.
Findings
The proposed framework theorises how GenAI can augment design thinking while maintaining a human-centred orientation. It shows how small businesses can accelerate social impact by adopting design thinking and GenAI integration to deepen customer insights, prioritise socially valuable opportunities, and experiment with prototypes prior to scaling. An implementation checklist is also proposed, which translates the framework into actionable guidance for small businesses, alongside a future research agenda outlined around key design thinking phases.
Originality
The paper advances small business social impact research by shifting attention from firm-level outcomes to design processes through which social value is created. It offers a novel integration of design thinking and GenAI for socially- and innovation-focused small business research. GenAI is positioned as a socially oriented design element rather than purely technology for productivity or efficiency
“Demystifying co-production”: learning together about ways to carry it out
Full text linkThis session will explore and clarify common (mis)understandings of co-production and provide practical insights into effective, ethical, and inclusive engagement with different participant groups. Colleagues will have the opportunity to hear examples of good practice, reflect on their own approaches, and connect with others interested in co-produced research and knowledge exchange
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