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Durham University

Research & business

Research lectures, seminars and events

The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but  wish to enquire about attending one of the events please contact the organiser or host department.


 

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Events for 21 November 2019

Irene Pasquinelli : From line arrangements to representations of 3-manifolds

1:00pm, CM301

In 1983, Hirzebruch considered some arrangements of complex lines in the complex projective 2-space and showed that a suitable branched cover leads to a complex hyperbolic manifold, which turned out to be one of Deligne-Mostow lattices.
In 2019, Dashyan constructed a Lefschetz fibration on this space and used it to build representations of 3-manifolds into PU(2,1), with image the lattice in question.
I will explain his construction and tell you how we are planning to generalise this to all other Deligne-Mostow lattices and interpret this construction in terms of the fundamental domains I built for these lattices.
This is a work (very much) in progress, joint with Elisha Falbel.

Contact mark.a.powell@durham.ac.uk, andrew.lobb@durham.ac.uk, wilhelm.klingenberg@durham.ac.uk for more information about this event.


Sabine Boegli: Schroedinger operator with non-zero accumulation points of complex eigenvalues

2:00pm, CM301

We consider Schroedinger operators on the whole Euclidean space or on the half-space, subject to real Robin boundary conditions. I will present the construction of a non-real potential that decays at infinity so that the corresponding Schroedinger operator has infinitely many non-real eigenvalues accumulating at every point of the essential spectrum. This proves that the Lieb-Thirring inequalities, crucial in quantum mechanics for the proof of stability of matter, do no longer hold in the non-selfadjoint case.

Contact djoko.wirosoetisno@durham.ac.uk for more information about this event.


Lucy Nattrass: Bio-based materials for the chemical industry: opportunities and challenges

6:00pm, CG141 (Musgrave room) and CG60

A lecture on Thursday 21 November 2019 at the Department of Chemistry, Durham University.
Musgrave Room (CG141), 6 pm: coffee & tea
CG60, 6.30 pm: Lecture
The lecture will be followed by a wine reception.
A local section collaboration with the Royal Society of Chemistry Management Group.

Today the chemical industry derives most of its organic raw materials from fossil resources, liberating fossil carbon that was sequestered from the atmosphere millions of years ago. Bio-based chemicals are produced from plant- or animal- derived raw materials, including sugar, fats and oils, and organic waste. The carbon in these materials is recently sequestered from the atmosphere and it therefore considered a renewable source.

Many of the commodity and specialty chemicals that we use today can be produced from bio-based sources and the Bio-based Industry Consortium (BIC) set a target in the 2017 Strategic Innovation and Research Agenda (SIRA) to increase the share of bio-based or renewable feedstocks to 25% of the total volume of organic chemical raw materials by 2030.

This lecture will explore the technical and societal factors driving the growth of the bio-based economy; the opportunities this presents for the chemical industry, including how it can contribute to the transition to a circular economy; and the key challenges, including recent lessons from industry.

Lucy Nattrass joined Nouryon (formerly AkzoNobel Specialty Chemicals) as an Innovation Project Leader for Bio-based Materials in August 2016. Her primary responsibility is to support the delivery of the bio-based strategy working closely with Nouryon’s businesses to identify, evaluate and source bio-based materials to contribute to Nouryon’s sustainability targets.

Want to attend?

Book your place now by registering via https://rsc.li/2WNrNVV

Limited places available.