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8. Cerebral venous thrombosis after vaccination against COVID-19 in the UK: a multicentre cohort study

Author

Al-izzi, Sara, Baheerathan, Aravindhan, Banerjee, Soma, Benson, Gary, Boshier, Claudia, Buddha, Sandeep, Burley, Nathan, Cameron Smail, Ruaridh, Chandratheva, Arvind, Chudakou, Pavel, Clatworthy, Philip, Coles, Alasdair, Cox, Thomas, Dasgupta, Ranjit, Davenport, Richard, Devine, Darrell, Fenlon, Stephen, Gabriel, Carolyn, Ghatala, Rita, Hall, Claire, Hargovan, Milan, Harkness, Kirsty, Harvey, Ian, Hicken, Lucy, Howaniec, Laura, Ibnouf, Abubaker, Idrovo, Luis, Ingle, Gordon, Kyan Lee, Yong, Lang, Ailidh, McBride, Simon, McLeod, Malcolm, Medlock, Ruth, Mehta, Puja, Morrison, Ian, Muddegowda, Girish, Muzerengi, Sharon, Pang, Donald, Periyasamy, Gopinath, Preston, Gavin, Priestley, Naomi, Revicka, Lydia, Saber, Sadia, Smith, Elliott, Sorour, Youssef, Spooner, Oliver, Stone, Jon, Sztriha, Laszlo, Thambirajah, Narmathey, Thomas, Rhys, Veale, David, Wall, Jasmine, White, Sarah, White, James, Yusoff, Syarah, Zambreanu, Laura, Perry, Richard J, Tamborska, Arina, Singh, Bhagteshwar, Craven, Brian, Marigold, Richard, Arthur-Farraj, Peter, Yeo, Jing Ming, Zhang, Liqun, Hassan-Smith, Ghaniah, Jones, Matthew, Hutchcroft, Christopher, Hobson, Esther, Warcel, Dana, White, Daniel, Ferdinand, Phillip, Webb, Alastair, Solomon, Tom, Scully, Marie, Werring, David J, and Roffe, Christine

Published
2021
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15. Managing the diffusion of medical technologies

Author

Harvey, Ian Keith

Subjects
362.1, Medical care
Abstract

The aim of the study was to understand how and why medical technologies (devices, pharmaceuticals and surgical procedures) are produced (innovated and developed) and consumed (adopted and utilised).Medical technologies are linked to the expansion of health care provision and costs. Policy makers encourage technology assessment to ensure the value of medical technologies (absolute technological efficacy and relative cost effectiveness). This policy, which is underlain by a model of technological determinism, may be ineffective if other factors influence decision making.Three international (UK and USA) comparative case studies were undertaken, analysing the innovation, development and diffusion of specific medical technologies. Annual statistics were gathered on adoption and utilisation rates of Magnetic Resonance Imaging (a device), Laparoscopic Cholecystectomy (a surgical procedure) and Prozac (a drug). Literature review supported interviews with parties involved in decision making processes.The widespread adoption of Magnetic Resonance Imaging has been motivated by professional and institutional competition, despite its often inappropriate utilisation, uncertain efficacy and extremely high costs.Laparoscopic Cholecystectomy (keyhole surgery for gallbladder stones) has diffused rapidly, being driven by general surgeon's concerns over their control of the gallbladder. The ease of the surgery has enabled total surgical volumes to almost double.The diffusion of Prozac (an expensive antidepressant) was influenced by high profile uncertainties regarding its safety and efficacy. Subsequently its range of applications have grown, but many of these are unproven, whilst its long term safety profile is unknown.The study concludes that the decision making surrounding the innovation and diffusion of medical technologies is only vaguely related to their clinical efficacy or their cost effectiveness. lntra professional competition is central to the production and diffusion of medical technologies. Technology assessments, being largely reactive, and dependent on clinical reports, are unlikely to prove effective in achieving cost effectiveness. This finding has significant implications for future health care policy making.

Published
1998

17. Separation and Characterization of Plastic Waste Packaging Contaminated with Food Residues.

Author

Tretsiakova-McNally, Svetlana, Lubarsky, Helen, Vennard, Ashlene, Cairns, Paul, Farrell, Charlie, Joseph, Paul, Arun, Malavika, Harvey, Ian, Harrison, John, and Nadjai, Ali

Subjects
PACKAGING waste, PLASTIC scrap, PLASTICS in packaging, WASTE products, FOOD packaging, PLASTIC scrap recycling, FOOD contamination
Abstract

In this paper, we present the development of a novel processing technology to tackle hard-to-recycle plastic packaging waste contaminated with food residues. The proof-of-concept (POC) technology can effectively separate food residual amounts from plastic waste materials to a level acceptable for further re-use or recycling of the plastic packaging. To assess this technology, we have conducted spectroscopic, thermal, and calorimetric characterizations of the obtained fractions, such as cleaned mixed plastics (CMP), food waste with mixed plastics (FWMP), and a mixture of microplastics (MP). The analyses were carried out with the aid of Fourier-Transform Infrared spectroscopy (FT-IR), Thermo-Gravimetric Analysis (TGA), Microcone Combustion Calorimetry (MCC), and 'bomb' calorimetry. The highest ratio of CMP to FWMP and the lowest amount of MP were obtained utilizing 700 rpm blade rotational speed and 15 s residence time of contaminated plastics in a cutting mill chamber. The plastics were freed from food contamination by 93–97%, which highlights a strong potential of the POC as a solution for 'dry-cleaning' of similar wastes on a larger scale. The main components of the CMP fraction were low-density polyethylene (LDPE), polypropylene (PP), and polyethylene terephthalate (PET), which are recyclable plastics. The knowledge and understanding of thermal degradation behaviours and calorimetric attributes of separated fractions, determined in this study, are essential in informing the industrial players using pyrolysis as a technique for recycling plastics. [ABSTRACT FROM AUTHOR]

Published
2023
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19. ON DECK

Author

Waller, Derek, McGovern, Terrance, Schneider, George, Cruijff, Henk, Harvey, Ian, Sileo, Tom, and Christley, Jim

Published
2013

25. ON DECK

Author

Bell, Neil, Parkinson, Jonathan, Harvey, Ian, Cruijff, Henk, Carpenter, Stewart A., and Smigielski, Adam

Published
2008

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