35,345 results match your criteria: "UNIVERSITY OF SHEFFIELD.[Affiliation]"

Vaccinating care home staff is essential to protect vulnerable residents by reducing infection risks and creating a safer care environment. However, vaccine hesitancy amongst staff remains a challenge, particularly since the COVID-19 pandemic raised concerns about side effects and vaccination mandates. This study examines how the pandemic influenced flu vaccine hesitancy amongst UK care home staff.

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Angiogenesis Dynamics: A Computational Model of Intravascular Flow Within a Structural Adaptive Vascular Network.

Biomedicines

December 2024

LAETA-Laboratório Associado de Energia, Transportes e Aeronáutica, Universidade do Porto, 4200-165 Porto, Portugal.

Background: Understanding vascular development and the key factors involved in regulating angiogenesis-the growth of new blood vessels from pre-existing vasculature-is crucial for developing therapeutic approaches to promote wound healing. Computational techniques offer valuable insights into improving angiogenic strategies, leading to enhanced tissue regeneration and improved outcomes for chronic wound healing. While chorioallantoic membrane (CAM) models are widely used for examining fundamental mechanisms in vascular development, they lack quantification of essential parameters such as blood flow rate, intravascular pressure, and changes in vessel diameter.

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The objective of this study was to synthesise evidence assessing the effectiveness of workplace-based interventions that promote self-management of multiple long-term conditions or disabilities, e.g., type I and II diabetes, asthma, musculoskeletal injury/disorder, cancer, and mental ill-health.

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Prompt learning is a powerful technique that enables the transfer of Vision-Language Models (VLMs) like CLIP to downstream tasks. However, when the prompt-based methods are fine-tuned solely on base classes, they often struggle to generalize to novel classes lacking visual samples during training, especially in scenarios with limited training data. To address this challenge, we propose an innovative approach called Synth-CLIP that leverages synthetic data to enhance CLIP's generalization capability for base classes and the general capability for novel classes.

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Cerebral perfusion alterations in healthy young adults due to two genetic risk factors of Alzheimer's disease: APOE and MAPT.

J Cereb Blood Flow Metab

January 2025

Sheffield Institute for Translational Neuroscience, Division of Neuroscience, School of Medicine and Population Heath, University of Sheffield, Sheffield, UK.

Functional brain changes such as altered cerebral blood flow occur long before the onset of clinical symptoms in Alzheimer's disease (AD) and other neurodegenerative disorders. While cerebral hypoperfusion occurs in established AD, middle-aged carriers of genetic risk factors for AD, including APOE ε4, display regional hyperperfusion due to hypothesised pleiotropic or compensatory effects, representing a possible early biomarker of AD and facilitating earlier AD diagnosis. However, it is not clear whether hyperperfusion already exists even earlier in life.

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Background: It is well established that frontline health care staff are particularly at risk of stress. Resilience is important to help staff to manage daily challenges and to protect against burnout.

Objective: This study aimed to assess the usability and user perceptions of a resilience training web app developed to support health care keyworkers in understanding their own stress response and to help them put into place strategies to manage stress and to build resilience.

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Studies have shown that those high in anxiety were at increased risk for alcohol use during the COVID-19 pandemic. Tension reduction theory points to anxiety sensitivity (AS) as a potential risk factor. Drinking to cope may further increase this risk.

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Background The sentinel lymph node biopsy (SLNB) is the standard method used to determine the stage of breast cancer in patients with no clinical signs of axillary involvement. The current gold standard for the intraoperative assessment of the axilla involves the use of dual radioisotope and patent blue dye. However, researchers have been studying the use of superparamagnetic iron oxide Magtrace® (Endomagnetics Limited, Cambridge, United Kingdom) agents as an alternative to overcome the limitations of the standard SLNB technique.

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Resolving the contrasting leaf hydraulic adaptation of C and C grasses.

New Phytol

January 2025

Department of Ecology and Evolutionary Biology, University of California Los Angeles, 621 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA.

Grasses are exceptionally productive, yet their hydraulic adaptation is paradoxical. Among C grasses, a high photosynthetic rate (A) may depend on higher vein density (D) and hydraulic conductance (K). However, the higher D of C grasses suggests a hydraulic surplus, given their reduced need for high K resulting from lower stomatal conductance (g).

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Theory of morphodynamic information processing: Linking sensing to behaviour.

Vision Res

January 2025

Centre for Brain and Behaviour, School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK.

The traditional understanding of brain function has predominantly focused on chemical and electrical processes. However, new research in fruit fly (Drosophila) binocular vision reveals ultrafast photomechanical photoreceptor movements significantly enhance information processing, thereby impacting a fly's perception of its environment and behaviour. The coding advantages resulting from these mechanical processes suggest that similar physical motion-based coding strategies may affect neural communication ubiquitously.

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Research demonstrates that self-objectification negatively impacts both cisgender heterosexual women and men. However, measures of self-objectification have primarily been designed for and validated in women, raising doubts about their applicability to men and demonstrated gender differences in self-objectification. This research investigated the psychometric properties of the Self-Objectification Beliefs and Behaviors Scale (SOBBS; Lindner & Tantleff-Dunn, 2017) in cisgender heterosexual women, and for the first time, in cisgender heterosexual men.

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Introduction: Chronic nausea and vomiting are symptoms of a wide range of gastrointestinal and non-gastrointestinal conditions. Diagnosis can be challenging and requires a systematic and well-structured approach. If the initial investigation for structural, toxic and metabolic disorders is negative, digestive motility and gut-brain interaction disorders should be assessed.

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Pharmacotherapeutic options for coronary thrombosis treatment: where are we today?

Expert Opin Pharmacother

January 2025

Cardiovascular Research Unit, Division of Clinical Medicine, School of Medicine and Population Health, University of Sheffield, Sheffield, UK.

Introduction: Advances in pharmacotherapy for coronary thrombosis treatment and prevention have transformed the clinical outcomes of patients with coronary artery disease but increased the complexity of therapeutic decision-making. Improvements in percutaneous coronary intervention techniques and stent design have reduced the incidence of thrombotic complications, which consequently has increased the challenge of adequately powering clinical trials of novel antithrombotic strategies for efficacy outcomes. Knowledge of the pathophysiology of coronary thrombosis and the characteristics of antithrombotic drugs can help with therapeutic decisions.

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Background: Interviewers' judgements play a critical role in competency-based assessments for selection such as the multiple-mini-interview (MMI). Much of the published research focuses on the psychometrics of selection and the impact of rater subjectivity. Within the context of selecting for entry into specialty postgraduate training, we used an interpretivist and socio-constructivist approach to explore how and why interviewers make judgments in high stakes selection settings whilst taking part in an MMI.

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Place-based household vouchers for locally supplied fruit and vegetables: the Fresh Street pilot cluster randomised controlled trial.

BMC Public Health

January 2025

Grounded Research Hub, Rotherham Doncaster and South Humber NHS Foundation Trust, Doncaster, DN4 8QN, UK.

Background: Households in areas of socio-economic deprivation are more likely to consume diets low in fruit and vegetables. Fresh Street is a place-based fruit and vegetable voucher scheme with vouchers redeemable with local independent (non-supermarket) vendors. Paper vouchers are offered to all households in a geographical area regardless of household type, size, or income with no requirement to demonstrate need.

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Home Urine Dipstick Screening for Bladder and Kidney Cancer in High-Risk Populations in England: A Microsimulation Study of Long-Term Impact and Cost-Effectiveness.

Pharmacoeconomics

January 2025

Sheffield Centre for Health and Related Research (SCHARR), School of Medicine and Population Health, The University of Sheffield, Regent Court, 30 Regent Street, Sheffield, UK.

Background: Testing high-risk populations for non-visible haematuria may enable earlier detection of bladder cancer, potentially decreasing mortality. This research aimed to assess the cost-effectiveness of urine dipstick screening for bladder cancer in high-risk populations in England.

Methods:  A microsimulation model developed in R software was calibrated to national incidence data by age, sex and stage, and validated against mortality data.

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High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p_{T}])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p_{T}]) in ^{208}Pb+^{208}Pb and ^{129}Xe+^{129}Xe collisions at sqrt[s_{NN}]=5.

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Interacting Dark Energy after DESI Baryon Acoustic Oscillation Measurements.

Phys Rev Lett

December 2024

School of Mathematics and Statistics, University of Sheffield, Hounsfield Road, Sheffield S3 7RH, United Kingdom.

Article Synopsis
  • The study examines how baryon acoustic oscillations data from the Dark Energy Spectroscopic Instrument affects interacting dark energy (IDE) models, which suggest an energy transfer between dark matter and dark energy.
  • By integrating data from Planck-2018 and the Dark Energy Spectroscopic Instrument, researchers find a noticeable preference for interactions, leading to a present-day expansion rate that alleviates existing tensions with other measurements.
  • Although the IDE model offers a compelling explanation for various observational data and presents compatible expansion rates, it does struggle with predictions related to the overall matter density and large-scale structures in the universe.
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Purpose: Cost-utility analyses examining the value of new vaccines for pneumococcal disease will require health state utilities as inputs. Existing utilities for pneumococcal infections in young children are limited. The purpose of this study was to estimate health state utilities associated with pneumococcal infections in young children.

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Conflating the Operational Definition of Osteoporosis with Intervention Thresholds.

Calcif Tissue Int

January 2025

Division of Clinical Medicine, School of Medicine and Population Health, Mellanby Centre for Musculoskeletal Research, University of Sheffield, Sheffield, UK.

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The refinement of neural circuits towards mature function is driven during development by patterned spontaneous calcium-dependent electrical activity. In the auditory system, this sensory-independent activity arises in the pre-hearing cochlea and regulates the survival and refinement of the auditory pathway. However, the origin and interplay of calcium signals during cochlear development is unknown in vivo.

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A symbiotic relationship exists between narrative imaginaries of and real-life advancements in technology. Such cultural imaginings have a powerful influence on our understanding of the potential that technology has to affect our lives; as a result, narrative-based approaches to (PD) of technology are an active area of investigation.In this ongoing study, the following research questions are addressed: how can PD be optimised for the fields of robotics and assistive technology, particularly with regard to fostering empowerment and eliciting how people imagine the role of technology in their own futures? How can the symbiotic relationship between (popular) cultural imaginaries and real-life technological advancements be acknowledged within the PD process?The study synthesises fictional inquiry and science fiction prototyping methodologies and processes over multiple workshops.

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Article Synopsis
  • Imagination and narrative are crucial for envisioning potential futures related to disability and understanding technology's influence on these realities.
  • The concept of 'science fiction prototyping' (SFP) helps in creating visions for future worlds and requires a more critical examination than currently provided by Johnson's framework.
  • By recontextualizing SFP with a posthumanist perspective, we can develop a more effective co-design methodology that integrates cultural imaginations and our relationship with technology in shaping our futures.
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