Rachel Williams

ORCID: 0000-0002-1954-0256
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About
Contact & Profiles
Research Areas
  • Retinal and Macular Surgery
  • Corneal Surgery and Treatments
  • Ocular Surface and Contact Lens
  • Semiconductor Quantum Structures and Devices
  • Intraocular Surgery and Lenses
  • Advanced Semiconductor Detectors and Materials
  • Retinal Development and Disorders
  • Polymer Surface Interaction Studies
  • Surface Modification and Superhydrophobicity
  • Semiconductor materials and interfaces
  • Electrospun Nanofibers in Biomedical Applications
  • Retinal Diseases and Treatments
  • Surface and Thin Film Phenomena
  • Glaucoma and retinal disorders
  • Bone Tissue Engineering Materials
  • Solid-state spectroscopy and crystallography
  • 3D Printing in Biomedical Research
  • Corneal surgery and disorders
  • Semiconductor materials and devices
  • Vehicle emissions and performance
  • Electron and X-Ray Spectroscopy Techniques
  • Particle Detector Development and Performance
  • Orthopaedic implants and arthroplasty
  • Air Quality and Health Impacts
  • Species Distribution and Climate Change

University of Liverpool
2015-2024

University of South Carolina
2024

University College London
2002-2024

Great Ormond Street Hospital
2024

St George's Hospital
2014-2023

Mission Therapeutics (United Kingdom)
2023

Sheffield Hallam University
2023

University Hospitals Plymouth NHS Trust
2022

University of California, Berkeley
2022

Charles River Laboratories (United Kingdom)
2021-2022

Image segmentation is an important step in medical image processing and has been widely studied developed for refinement of clinical analysis applications. New models based on deep learning have improved results but are restricted to pixel-wise fitting the map. Our aim was tackle this limitation by developing a new model which takes into account area inside as well outside region interest size boundaries during learning. Specifically, we propose loss function incorporates information...

10.1109/cvpr.2019.01190 article EN 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) 2019-06-01

Abstract Viral clearance, antibody response and the mutagenic effect of molnupiravir has not been elucidated in at-risk populations. Non-hospitalised participants within 5 days SARS-CoV-2 symptoms randomised to receive (n = 253) or Usual Care 324) were recruited study viral dynamics on whole genome sequence from 1437 genomes. Molnupiravir accelerates load decline, but virus is detectable by Day most cases. At 14 (9 post-treatment), associated with significantly higher persistence lower...

10.1038/s41467-024-45641-0 article EN cc-by Nature Communications 2024-02-23

We compared pregnancy outcomes among United States-born and Mexican-born women having Spanish surnames with US-born Whites Blacks using California's 1981 matched birth-death cohort file. Maternal risk characteristics between Black were similar. In contrast, Latino women, regardless of national origin, delivered small proportions low weight infants as to Blacks. Birthweight-specific mortality rates during the fetal neonatal periods for offspring surname generally higher than those other...

10.2105/ajph.76.4.387 article EN American Journal of Public Health 1986-04-01

Abstract Mutations in SNCA, the gene encoding α-synuclein (αSyn), cause familial Parkinson’s disease (PD) and aberrant αSyn is a key pathological hallmark of idiopathic PD. This α-synucleinopathy leads to mitochondrial dysfunction, which may drive dopaminergic neurodegeneration. PARKIN PINK1, mutated autosomal recessive PD, regulate preferential autophagic clearance dysfunctional mitochondria (“mitophagy”) by inducing ubiquitylation proteins, process counteracted deubiquitylation via USP30....

10.1038/s41467-023-42876-1 article EN cc-by Nature Communications 2023-11-13

10.1007/bf00058978 article EN Journal of Materials Science Materials in Medicine 1994-01-01

Abstract Polytetrafluoroethylene (PTFE) was treated in a low‐power plasma using series of feed gases (O 2 , Ar, N and NH 3 ) the resulting surface modifications were evaluated by x‐ray photoelectron spectroscopy, static secondary ion mass dynamic contact angle measurements atomic force microscopy. All treatments caused light etching, but nature extent chemical modification varied considerably. Fluorine depletion affected most efficiently Ar least effectively O plasma. New functionalities...

10.1002/sia.1065 article EN Surface and Interface Analysis 2001-05-01

10.1016/0142-9612(88)90085-3 article EN Biomaterials 1988-05-01

Blood pressure and heart rate response to pharmacologic autonomic blockade were studied in the 31 fetuses of 27 time-dated pregnant sheep from 85 150 days gestation 5 neonatal lambs. A fetal hind limb vein either a femoral or carotid artery cannulated following at least 2 days’ recovery surgery, over several while ewes stood undisturbed. The degree control exerted by nervous system fetus was examined selective parasympathetic, α- β-adrenergic, components. Evidence activity found all ages...

10.1159/000240552 article EN Neonatology 1973-01-01

The quantum-mechanical convergent kinetic equation of Gould and DeWitt is used for the calculation static transport coefficients through first order in plasma parameter a fully ionized, nondengenerate, two-component near thermal equilibrium. solved with standard Chapman-Enskog procedure using three-term Sonine polynomial expansion. Since close collisions dynamic screening effects are treated correctly, results contain both logarithmic (dominant) nonlogarithmic (subdominant) terms evaluated...

10.1063/1.1692351 article EN The Physics of Fluids 1969-11-01

We report an increase in GII.17 norovirus outbreaks and sporadic infections of acute gastroenteritis Austria, Germany, France, Ireland, the Netherlands, England United States during 2023/24 season. A decrease GII.4 coincided with prevalence increasing to between 17% 64% all GII detections. Overall, 84% strains clustered closely first reported Romania 2021 two new sub-lineages were identified. Norovirus surveillance molecular characterisation should be prioritised this winter.

10.2807/1560-7917.es.2024.29.39.2400625 article EN cc-by Eurosurveillance 2024-09-26

10.1007/bf00186587 article EN Graefe s Archive for Clinical and Experimental Ophthalmology 1994-07-01
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