Wed 07 May 13:00: The SIREN study at five years: Tracking SARS-CoV-2 and respiratory infections in UK healthcare workers since 2020
All are invited to the Bradford Hill Seminar:
The SIREN study at five years: Tracking SARS -CoV-2 and respiratory infections in UK healthcare workers since 2020
Speaker: Victoria Hall, Consultant Epidemiologist, Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency (UK HSA )
Register to attend Please note this will be a free hybrid seminar, with the option to attend in-person (Large Seminar Room, East Forvie Building, Forvie Site, Robinson Way, Cambridge CB2 0SR ) or virtually (via Zoom).
No registration is required to attend in person.
Register in advance to attend this seminar online at:
https://cam-ac-uk.zoom.us/meeting/register/CoavXVmNQtWN8j8TOFv-rg#/registration
Abstract The SARS -CoV-2 Immunity and Reinfection Evaluation (SIREN) study is a prospective cohort study of hospital-based healthcare workers across the UK. It was established in 2020 as a pandemic response study, with over 44,000 healthcare workers recruited from 135 NHS trusts/health boards. The study initially investigated SARS -CoV-2 reinfections and the durability of immunity following infection, and subsequently COVID -19 vaccination. It has expanded its scope to evaluate Winter Pressures on the healthcare workforce, and questions related to immunity more broadly.
SIREN has been running since 2024. This has involved collecting data on symptoms and absence from time off work trends in around 5000 participants recruited from the original SIREN cohort. In addition to investigating Winter Pressures, SIREN provides an opportunity to address new research questions of public health importance that impact healthcare workers, including the emergence of multidrug resistant organisms and risk factors for healthcare associated infections.
More details on the study and publications from the study can be found here: https://www.gov.uk/guidance/siren-study
About Victoria Hall Victoria Hall is a Consultant Epidemiologist in the Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency and has been leading the SIREN study team since 2020. She completed public health speciality training in the East of England and the UK Field Epidemiology Training Programme based in South East and London Regional Field Epidemiology Service. She holds a part-time position at the Institute for Health Informatics, UCL working on research on infections and AMR in care homes with the VIVALDI study.
About the Bradford Hill seminars The Bradford Hill seminar series is the principal series of The Cambridge Population Health Sciences Partnership, in collaboration with the PHG Foundation. This comprises the Departments of Public Health & Primary Care, MRC Biostatistics Unit and MRC Epidemiology Unit at the University of Cambridge, bringing together a multi-disciplinary partnership of academics and public health professionals. The Bradford Hill seminar programme of internationally recognised speakers covers topics of broad interest to our public health research community. It aims to transcend as well as connect the activities of our individual partners.
All are welcome at our Bradford Hill seminars.
- Speaker: Victoria Hall, UK Health Security Agency
- Wednesday 07 May 2025, 13:00-14:00
- Venue: Large Seminar Room, East Forvie Building, Forvie Site Robinson Way Cambridge CB2 0SR..
- Series: Bradford Hill Seminars; organiser: Paul Browne.
Wed 07 May 13:00: The SIREN study at five years: Tracking SARS-CoV-2 and respiratory infections in UK healthcare workers since 2020
All are invited to the Bradford Hill Seminar:
The SIREN study at five years: Tracking SARS -CoV-2 and respiratory infections in UK healthcare workers since 2020
Speaker: Victoria Hall, Consultant Epidemiologist, Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency (UK HSA )
Register to attend Please note this will be a free hybrid seminar, with the option to attend in-person (Large Seminar Room, East Forvie Building, Forvie Site, Robinson Way, Cambridge CB2 0SR ) or virtually (via Zoom).
No registration is required to attend in person.
Register in advance to attend this seminar online at:
https://cam-ac-uk.zoom.us/meeting/register/CoavXVmNQtWN8j8TOFv-rg#/registration
Abstract The SARS -CoV-2 Immunity and Reinfection Evaluation (SIREN) study is a prospective cohort study of hospital-based healthcare workers across the UK. It was established in 2020 as a pandemic response study, with over 44,000 healthcare workers recruited from 135 NHS trusts/health boards. The study initially investigated SARS -CoV-2 reinfections and the durability of immunity following infection, and subsequently COVID -19 vaccination. It has expanded its scope to evaluate Winter Pressures on the healthcare workforce, and questions related to immunity more broadly.
SIREN has been running since 2024. This has involved collecting data on symptoms and absence from time off work trends in around 5000 participants recruited from the original SIREN cohort. In addition to investigating Winter Pressures, SIREN provides an opportunity to address new research questions of public health importance that impact healthcare workers, including the emergence of multidrug resistant organisms and risk factors for healthcare associated infections.
More details on the study and publications from the study can be found here: https://www.gov.uk/guidance/siren-study
About Victoria Hall Victoria Hall is a Consultant Epidemiologist in the Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency and has been leading the SIREN study team since 2020. She completed public health speciality training in the East of England and the UK Field Epidemiology Training Programme based in South East and London Regional Field Epidemiology Service. She holds a part-time position at the Institute for Health Informatics, UCL working on research on infections and AMR in care homes with the VIVALDI study.
About the Bradford Hill seminars The Bradford Hill seminar series is the principal series of The Cambridge Population Health Sciences Partnership, in collaboration with the PHG Foundation. This comprises the Departments of Public Health & Primary Care, MRC Biostatistics Unit and MRC Epidemiology Unit at the University of Cambridge, bringing together a multi-disciplinary partnership of academics and public health professionals. The Bradford Hill seminar programme of internationally recognised speakers covers topics of broad interest to our public health research community. It aims to transcend as well as connect the activities of our individual partners.
All are welcome at our Bradford Hill seminars.
- Speaker: Victoria Hall, UK Health Security Agency
- Wednesday 07 May 2025, 13:00-14:00
- Venue: Large Seminar Room, East Forvie Building, Forvie Site Robinson Way Cambridge CB2 0SR..
- Series: Bradford Hill Seminars; organiser: Paul Browne.
Wed 07 May 13:00: The SIREN study at five years: Tracking SARS-CoV-2 and respiratory infections in UK healthcare workers since 2020
All are invited to the Bradford Hill Seminar:
The SIREN study at five years: Tracking SARS -CoV-2 and respiratory infections in UK healthcare workers since 2020
Speaker: Victoria Hall, Consultant Epidemiologist, Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency (UK HSA )
Register to attend Please note this will be a free hybrid seminar, with the option to attend in-person (Large Seminar Room, East Forvie Building, Forvie Site, Robinson Way, Cambridge CB2 0SR ) or virtually (via Zoom).
No registration is required to attend in person.
Register in advance to attend this seminar online at:
https://cam-ac-uk.zoom.us/meeting/register/CoavXVmNQtWN8j8TOFv-rg#/registration
Abstract The SARS -CoV-2 Immunity and Reinfection Evaluation (SIREN) study is a prospective cohort study of hospital-based healthcare workers across the UK. It was established in 2020 as a pandemic response study, with over 44,000 healthcare workers recruited from 135 NHS trusts/health boards. The study initially investigated SARS -CoV-2 reinfections and the durability of immunity following infection, and subsequently COVID -19 vaccination. It has expanded its scope to evaluate Winter Pressures on the healthcare workforce, and questions related to immunity more broadly.
SIREN has been running since 2024. This has involved collecting data on symptoms and absence from time off work trends in around 5000 participants recruited from the original SIREN cohort. In addition to investigating Winter Pressures, SIREN provides an opportunity to address new research questions of public health importance that impact healthcare workers, including the emergence of multidrug resistant organisms and risk factors for healthcare associated infections.
More details on the study and publications from the study can be found here: https://www.gov.uk/guidance/siren-study
About Victoria Hall Victoria Hall is a Consultant Epidemiologist in the Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency and has been leading the SIREN study team since 2020. She completed public health speciality training in the East of England and the UK Field Epidemiology Training Programme based in South East and London Regional Field Epidemiology Service. She holds a part-time position at the Institute for Health Informatics, UCL working on research on infections and AMR in care homes with the VIVALDI study.
About the Bradford Hill seminars The Bradford Hill seminar series is the principal series of The Cambridge Population Health Sciences Partnership, in collaboration with the PHG Foundation. This comprises the Departments of Public Health & Primary Care, MRC Biostatistics Unit and MRC Epidemiology Unit at the University of Cambridge, bringing together a multi-disciplinary partnership of academics and public health professionals. The Bradford Hill seminar programme of internationally recognised speakers covers topics of broad interest to our public health research community. It aims to transcend as well as connect the activities of our individual partners.
All are welcome at our Bradford Hill seminars.
- Speaker: Victoria Hall, UK Health Security Agency
- Wednesday 07 May 2025, 13:00-14:00
- Venue: Large Seminar Room, East Forvie Building, Forvie Site Robinson Way Cambridge CB2 0SR..
- Series: Bradford Hill Seminars; organiser: Paul Browne.
Wed 07 May 13:00: The SIREN study at five years: Tracking SARS-CoV-2 and respiratory infections in UK healthcare workers since 2020
All are invited to the Bradford Hill Seminar:
The SIREN study at five years: Tracking SARS -CoV-2 and respiratory infections in UK healthcare workers since 2020
Speaker: Victoria Hall, Consultant Epidemiologist, Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency (UK HSA )
Register to attend Please note this will be a free hybrid seminar, with the option to attend in-person (Large Seminar Room, East Forvie Building, Forvie Site, Robinson Way, Cambridge CB2 0SR ) or virtually (via Zoom).
No registration is required to attend in person.
Register in advance to attend this seminar online at:
https://cam-ac-uk.zoom.us/meeting/register/CoavXVmNQtWN8j8TOFv-rg#/registration
Abstract The SARS -CoV-2 Immunity and Reinfection Evaluation (SIREN) study is a prospective cohort study of hospital-based healthcare workers across the UK. It was established in 2020 as a pandemic response study, with over 44,000 healthcare workers recruited from 135 NHS trusts/health boards. The study initially investigated SARS -CoV-2 reinfections and the durability of immunity following infection, and subsequently COVID -19 vaccination. It has expanded its scope to evaluate Winter Pressures on the healthcare workforce, and questions related to immunity more broadly.
SIREN has been running since 2024. This has involved collecting data on symptoms and absence from time off work trends in around 5000 participants recruited from the original SIREN cohort. In addition to investigating Winter Pressures, SIREN provides an opportunity to address new research questions of public health importance that impact healthcare workers, including the emergence of multidrug resistant organisms and risk factors for healthcare associated infections.
More details on the study and publications from the study can be found here: https://www.gov.uk/guidance/siren-study
About Victoria Hall Victoria Hall is a Consultant Epidemiologist in the Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency and has been leading the SIREN study team since 2020. She completed public health speciality training in the East of England and the UK Field Epidemiology Training Programme based in South East and London Regional Field Epidemiology Service. She holds a part-time position at the Institute for Health Informatics, UCL working on research on infections and AMR in care homes with the VIVALDI study.
About the Bradford Hill seminars The Bradford Hill seminar series is the principal series of The Cambridge Population Health Sciences Partnership, in collaboration with the PHG Foundation. This comprises the Departments of Public Health & Primary Care, MRC Biostatistics Unit and MRC Epidemiology Unit at the University of Cambridge, bringing together a multi-disciplinary partnership of academics and public health professionals. The Bradford Hill seminar programme of internationally recognised speakers covers topics of broad interest to our public health research community. It aims to transcend as well as connect the activities of our individual partners.
All are welcome at our Bradford Hill seminars.
- Speaker: Victoria Hall, UK Health Security Agency
- Wednesday 07 May 2025, 13:00-14:00
- Venue: Large Seminar Room, East Forvie Building, Forvie Site Robinson Way Cambridge CB2 0SR..
- Series: Bradford Hill Seminars; organiser: Paul Browne.
Wed 07 May 13:00: The SIREN study at five years: Tracking SARS-CoV-2 and respiratory infections in UK healthcare workers since 2020
All are invited to the Bradford Hill Seminar:
The SIREN study at five years: Tracking SARS -CoV-2 and respiratory infections in UK healthcare workers since 2020
Speaker: Victoria Hall, Consultant Epidemiologist, Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency (UK HSA )
Register to attend Please note this will be a free hybrid seminar, with the option to attend in-person (Large Seminar Room, East Forvie Building, Forvie Site, Robinson Way, Cambridge CB2 0SR ) or virtually (via Zoom).
No registration is required to attend in person.
Register in advance to attend this seminar online at:
https://cam-ac-uk.zoom.us/meeting/register/CoavXVmNQtWN8j8TOFv-rg#/registration
Abstract The SARS -CoV-2 Immunity and Reinfection Evaluation (SIREN) study is a prospective cohort study of hospital-based healthcare workers across the UK. It was established in 2020 as a pandemic response study, with over 44,000 healthcare workers recruited from 135 NHS trusts/health boards. The study initially investigated SARS -CoV-2 reinfections and the durability of immunity following infection, and subsequently COVID -19 vaccination. It has expanded its scope to evaluate Winter Pressures on the healthcare workforce, and questions related to immunity more broadly.
SIREN has been running since 2024. This has involved collecting data on symptoms and absence from time off work trends in around 5000 participants recruited from the original SIREN cohort. In addition to investigating Winter Pressures, SIREN provides an opportunity to address new research questions of public health importance that impact healthcare workers, including the emergence of multidrug resistant organisms and risk factors for healthcare associated infections.
More details on the study and publications from the study can be found here: https://www.gov.uk/guidance/siren-study
About Victoria Hall Victoria Hall is a Consultant Epidemiologist in the Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency and has been leading the SIREN study team since 2020. She completed public health speciality training in the East of England and the UK Field Epidemiology Training Programme based in South East and London Regional Field Epidemiology Service. She holds a part-time position at the Institute for Health Informatics, UCL working on research on infections and AMR in care homes with the VIVALDI study.
About the Bradford Hill seminars The Bradford Hill seminar series is the principal series of The Cambridge Population Health Sciences Partnership, in collaboration with the PHG Foundation. This comprises the Departments of Public Health & Primary Care, MRC Biostatistics Unit and MRC Epidemiology Unit at the University of Cambridge, bringing together a multi-disciplinary partnership of academics and public health professionals. The Bradford Hill seminar programme of internationally recognised speakers covers topics of broad interest to our public health research community. It aims to transcend as well as connect the activities of our individual partners.
All are welcome at our Bradford Hill seminars.
- Speaker: Victoria Hall, UK Health Security Agency
- Wednesday 07 May 2025, 13:00-14:00
- Venue: Large Seminar Room, East Forvie Building, Forvie Site Robinson Way Cambridge CB2 0SR..
- Series: Bradford Hill Seminars; organiser: Paul Browne.
Wed 07 May 13:00: The SIREN study at five years: Tracking SARS-CoV-2 and respiratory infections in UK healthcare workers since 2020
All are invited to the Bradford Hill Seminar:
The SIREN study at five years: Tracking SARS -CoV-2 and respiratory infections in UK healthcare workers since 2020
Speaker: Victoria Hall, Consultant Epidemiologist, Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency (UK HSA )
Register to attend Please note this will be a free hybrid seminar, with the option to attend in-person (Large Seminar Room, East Forvie Building, Forvie Site, Robinson Way, Cambridge CB2 0SR ) or virtually (via Zoom).
No registration is required to attend in person.
Register in advance to attend this seminar online at:
https://cam-ac-uk.zoom.us/meeting/register/CoavXVmNQtWN8j8TOFv-rg#/registration
Abstract The SARS -CoV-2 Immunity and Reinfection Evaluation (SIREN) study is a prospective cohort study of hospital-based healthcare workers across the UK. It was established in 2020 as a pandemic response study, with over 44,000 healthcare workers recruited from 135 NHS trusts/health boards. The study initially investigated SARS -CoV-2 reinfections and the durability of immunity following infection, and subsequently COVID -19 vaccination. It has expanded its scope to evaluate Winter Pressures on the healthcare workforce, and questions related to immunity more broadly.
SIREN has been running since 2024. This has involved collecting data on symptoms and absence from time off work trends in around 5000 participants recruited from the original SIREN cohort. In addition to investigating Winter Pressures, SIREN provides an opportunity to address new research questions of public health importance that impact healthcare workers, including the emergence of multidrug resistant organisms and risk factors for healthcare associated infections.
More details on the study and publications from the study can be found here: https://www.gov.uk/guidance/siren-study
About Victoria Hall Victoria Hall is a Consultant Epidemiologist in the Antimicrobial Resistance & Healthcare Associated Infections Division of the UK Health Security Agency and has been leading the SIREN study team since 2020. She completed public health speciality training in the East of England and the UK Field Epidemiology Training Programme based in South East and London Regional Field Epidemiology Service. She holds a part-time position at the Institute for Health Informatics, UCL working on research on infections and AMR in care homes with the VIVALDI study.
About the Bradford Hill seminars The Bradford Hill seminar series is the principal series of The Cambridge Population Health Sciences Partnership, in collaboration with the PHG Foundation. This comprises the Departments of Public Health & Primary Care, MRC Biostatistics Unit and MRC Epidemiology Unit at the University of Cambridge, bringing together a multi-disciplinary partnership of academics and public health professionals. The Bradford Hill seminar programme of internationally recognised speakers covers topics of broad interest to our public health research community. It aims to transcend as well as connect the activities of our individual partners.
All are welcome at our Bradford Hill seminars.
- Speaker: Victoria Hall, UK Health Security Agency
- Wednesday 07 May 2025, 13:00-14:00
- Venue: Large Seminar Room, East Forvie Building, Forvie Site Robinson Way Cambridge CB2 0SR..
- Series: Bradford Hill Seminars; organiser: Paul Browne.
Fri 16 May 16:00: Title to be confirmed
Abstract not available
- Speaker: Prof Pedram Hassanzedeh, University of Chicago
- Friday 16 May 2025, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 30 May 16:00: PhD Students' talks
Abstract not available
- Speaker: Speakers listed in abstract in due course
- Friday 30 May 2025, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 06 Jun 16:00: Numerical simulations of multiphase flows with various complexities
Abstract not available
- Speaker: Prof Omar Matar, Imperial College London
- Friday 06 June 2025, 16:00-17:00
- Venue: https://cassyni.com/s/fmws.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 23 May 16:00: From Wall-Climbing Active Colloids to self-assembly of Magnetotactic Bacteria
The observation of flocks of birds, schools of fish, and swarms of bees reveals captivating examples of collective behavior in nature. Over the past decade, physicists have unveiled intriguing features in such systems, giving rise to both spectacular phenomena and fundamental questions. In this presentation, we will first explore active wetting phenomena in a suspension of self-propelled Janus colloids near a vertical wall. While classical capillary rise is governed by equilibrium surface tension, active fluids challenge this paradigm. We investigate whether analogous interfacial effects emerge in non-phase-separated active sediments, uncovering how self-propulsion modifies wetting behavior. By studying the interaction between a non-phase-separated active sediment and a wall, we uncover how self-propulsion alters wetting-like behavior, offering insights into the role of activity in interfacial processes. In the second part, we turn to magnetotactic bacteria— microswimmers equipped with intracellular magnetic nanoparticles, enabling directed motion along magnetic fields. These bacteria exhibit dual sensitivity, responding not only to magnetic fields (magnetotaxis) but also to oxygen gradients (aerotaxis), which drives them to form dense, dynamic bands. We demonstrate how the interplay of magnetic steering, chemical gradients, and hydrodynamic interactions leads to rich self-organization.
- Speaker: Prof Cottin-Bizonne, Université Lyon
- Friday 23 May 2025, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
South Africa’s frogs and reptiles get their own list of names in local languages
Fri 02 May 16:00: Instabilities in viscoelastic fluids: a long story
Many real-life fluids are not Newtonian and have to be modelled with something more complex than a single scalar viscosity. In this talk we will look specifically at dilute polymer solutions. We’ll see some simple models that capture the essential features of their behaviour, and then investigate how the properties of these models affect the stability of channel flow.
The story spans my whole research career so far, from an early theoretical prediction which was later observed in experiments, to a more recent realisation that there is still quite a lot we don’t understand. If time permits I will also discuss the latest place the research has taken me, which is neither viscoelastic nor unstable.
- Speaker: Prof Helen Wilson, University College London
- Friday 02 May 2025, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 09 May 16:00: Metastability Properties of the Earth's Climate: a Multiscale Viewpoint
The ultralow frequency variability of the Earth’s climate features an interplay of typically long periods of stasis accompanied by critical transitions between qualitatively different regimes associated with metastable states. Such transitions have often been accompanied by massive and rapid changes in the biosphere. Multiple transitions between the coexisting warm and snowball climates occurred more than 600 Mya and eventually led to conditions favourable to the development of multicellular life. The coexistence of such states is due to the instability associated with the positive ice-albedo feedback, Yet, this behaviour repeats itself across a wide range of timescales, spatial domains, and physical processes. Building on Hasselmann’s program, we propose here to interpret the time-evolution of the Earth system as a trajectory taking place in a dynamical landscape, whose multiscale features describe a hierarchy of metastable states and associated tipping points. We introduce the concept of climatic Melancholia states, saddle embedded in the boundary between the basins of attraction of the stable climates and explain under which conditions they act as gateways of noise-induced transitions. Using a hierarchy of numerical models, we discuss in detail the dichotomy between warm and snowball climate by bringing together the deterministic and stochastic viewpoint on the related global stability properties. We then discuss the paleoclimatically-relevant case where multiple competing climatic states are present and show the relevance of our angle for interpreting proxy data. Finally, if time allows, we will present some very recent results suggesting that our viewpoint might explain some intriguing aspects of the dynamical features of the tipping points of the Atlantic Meridional Overturning Circulation.
Key References V. Lucarini and T. Bodai, Transitions across Melancholia States in a Climate Model: Reconciling the Deterministic and Stochastic Points of View, Phys. Rev. Lett. 122, 158701 (2019) G. Margazoglou et al., Dynamical landscape and multistability of a climate model, Proc. R. Soc. A.477 210019 (2021) V. Lucarini, M.D. Chekroun, Theoretical tools for understanding the climate crisis from Hasselmann’s programme and beyond, Nature Reviews Physics 5 (12), 744-765 (2023) D. D. Rousseau et al., A punctuated equilibrium analysis of the climate evolution of cenozoic exhibits a hierarchy of abrupt transitions. Sci Rep 13, 11290 (2023) J. Lohmann et al., Multistability and Intermediate Tipping of the Atlantic Ocean Circulation, Sci. Advances 10 DOI : 10.1126/sciadv.adi4253 (2024)
- Speaker: Prof Valerio Lucarini, University of Leicester
- Friday 09 May 2025, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Trump is stripping protections from marine protected areas – why that’s a problem for fishing’s future, and for whales, corals and other ocean life
Wed 30 Apr 14:00: Unravelling the complexity of root stem cell niche regulation through multi-scale models
Abstract not available
- Speaker: Dr Monica Garcia Gomez, Assistant Professor, Utrecht University
- Wednesday 30 April 2025, 14:00-15:00
- Venue: Auditorium of Sainsbury Laboratory Cambridge University - 47 Bateman Street and Online (Zoom meeting). Contact events@slcu.cam.ac.uk for meeting joining details.
- Series: Sainsbury Laboratory Seminars; organiser: Sainsbury Laboratory.
Wed 30 Apr 14:00: Unravelling the complexity of root stem cell niche regulation through multi-scale models
Abstract not available
- Speaker: Dr Monica Garcia Gomez, Assistant Professor, Utrecht University
- Wednesday 30 April 2025, 14:00-15:00
- Venue: Auditorium of Sainsbury Laboratory Cambridge University - 47 Bateman Street and Online (Zoom meeting). Contact events@slcu.cam.ac.uk for meeting joining details.
- Series: Sainsbury Laboratory Seminars; organiser: Sainsbury Laboratory.
Wed 30 Apr 14:00: Unravelling the complexity of root stem cell niche regulation through multi-scale models
Abstract not available
- Speaker: Dr Monica Garcia Gomez, Assistant Professor, Utrecht University
- Wednesday 30 April 2025, 14:00-15:00
- Venue: Auditorium of Sainsbury Laboratory Cambridge University - 47 Bateman Street and Online (Zoom meeting). Contact events@slcu.cam.ac.uk for meeting joining details.
- Series: Sainsbury Laboratory Seminars; organiser: Sainsbury Laboratory.
Ambitious changes to Canadian conservation law are needed to reverse the decline in biodiversity
Fri 13 Jun 16:00: Thermal vortex rings: the vortex dynamics
A thermal is a convective structure generated from a localized buoyancy anomaly, say, released from the surface. Since it evolves into a donuts-shaped vorticity, the vortex ring, it may be more precisely called the thermal vortex ring. Thermals are often considered basic elements of fully-developed convection in astrophysical and geophysical flows, as most vividly visualized by a cauliflower-like structure of cumulus-convective clouds. This talk revisits the problem of the thermal vortex ring from a point of view of the vortex dynamics. More specifically, I present: 1) a modon solution of a thermal vortex ring as an extension of Hill’s vortex; 2) a concise description based on the volume integrals of the vorticity weighted by a power of the distance from the vortex-ring axis; 3) derivation of a classical similarity solution based on it, as well as 4) a development of a closed system based on an explicit simulation. Those investigations as a whole suggest that the thermal vortex ring could be interpreted as a type of two-dimensional turbulence.
- Speaker: Dr Jun-Ichi Yano, University of Reading
- Friday 13 June 2025, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.