ERC FUNDED PROJECTS

The main focus of this project is the mathematical analysis of many-body quantum systems, in particular, interacting quantum gases at low temperature. The recent experimental advances in studying ultra-cold atomic gases have led to renewed interest in these systems. They display a rich variety of quantum phenomena, including, e.g., Bose–Einstein condensation and superfluidity, which makes them interesting both from a physical and a mathematical point of view. The goal of this project is the development of new mathematical tools for dealing with complex problems in many-body quantum systems. New mathematical methods lead to different points of view and thus increase our understanding of physical systems. From the point of view of mathematical physics, there has been significant progress in the last few years in understanding the interesting phenomena occurring in quantum gases, and the goal of this project is to investigate some of the key issues that remain unsolved. Due to the complex nature of the problems, new mathematical ideas and methods will have to be developed for this purpose. One of the main question addressed in this proposal is the validity of the Bogoliubov approximation for the excitation spectrum of many-body quantum systems. While its accuracy has been successfully shown for the ground state energy of various models, its predictions concerning the excitation spectrum have so far only been verified in the Hartree limit, an extreme form of a mean-field limit where the interaction among the particles is very weak and ranges over the whole system. The central part of this project is concerned with the extension of these results to the case of short-range interactions. Apart from being mathematically much more challenging, the short-range case is the one most relevant for the description of actual physical systems. Hence progress along these lines can be expected to yield valuable insight into the complex behavior of these many-body quantum systems.

1 497 755 €

Start date: 2016-10-01, End date: 2022-03-31

One out of 5 people in their fifties will experience a bone fracture due to osteoporosis (OP)-induced fragility in their lifetime. The OP socio-economic burden is dramatic and involves tens of millions of people in the EU, with a steadily increasing number due to population ageing. Current treatments entail drug-therapy coupled with a healthy lifestyle but OP fractures need mechanical fixation to rapidly achieve union: the contribution of biomaterial scientists in this field is still far from taking its expected leading role in cutting-edge research. Bone remodelling is a well-coordinated process of bone resorption by osteoclasts followed by the production of new bone by osteoblasts. This process occurs continuously throughout life in a coupling with a positive balance during growth and negative with ageing, which can result in OP. We believe that an architecture driven stimulation of the osteoclast/osteoblast coupling, with an avant-garde focus on osteoclasts activity, is the key to success in treating unbalanced bone remodelling. We aim to manufacture a scaffold that mimics healthy bone features which will establish a new microenvironment favoring a properly stimulated and active population of osteoclasts and osteoblasts, i.e. a well-balanced bone cooperation. After 5 years we will be able to prove the efficacy of this approach. A benchmark will be set up for OP fracture treatment and for the realization of smart bone substitutes that will be able to locally “trick” aged bone cells stimulating them to act as healthy ones. BOOST results will have an unprecedented impact on the scientific research community, opening a new approach to set up smart, biomimetic strategies to treat aged, unbalanced bone tissues and to reduce OP-associated disabilities and financial burdens.

1 977 500 €

Start date: 2016-05-01, End date: 2022-06-30

Immune systems are highly variable, but the sources of this variation are poorly understood. Genetic variation only explains a minor fraction of this, and we are unable to accurately predict the risk of immune mediated disease or severe infection in any given individual. I recently found that immune cells and proteins in healthy twins vary because of non-heritable influences (infections, vaccines, microbiota etc.), with only minor influences from heritable factors (Brodin, et al, Cell 2015). When and how such environmental influences shape our immune system is now important to understand. Birth represents the most transformational change in environment during the life of any individual. I propose, that environmental influences at birth, and during the first months of life could be particularly influential by imprinting on the regulatory mechanisms forming in the developing immune system. Adaptive changes in immune cell frequencies and functional states induced by early-life exposures could determine both the immune competence of the newborn, but potentially also its long-term trajectory towards immunological health or disease. Here, I propose a study of 1000 newborn children, followed longitudinally during their first 1000 days of life. By monitoring immune profiles and recording many environmental influences, we hope to understand how early life exposures can influence human immune system development. We have established a new assay based on Mass Cytometry and necessary data analysis tools (Brodin, et al, PNAS 2014), to simultaneously monitor the frequencies, phenotypes and functional states of more than 200 blood immune cell populations from only 100 microliters of blood. By monitoring environmental influences at regular follow-up visits, by questionnaires, serum measurements of infection, and gut microbiome sequencing, we aim to provide the most comprehensive analysis to date of immune system development in newborn children.

1 422 339 €

Start date: 2016-07-01, End date: 2021-06-30

Amines are crucially important classes of chemicals, widely present in pharmaceuticals, agrochemicals and surfactants. Yet, surprisingly, a systematic approach to obtaining this essential class of compounds from renewables has not been realized to date. The aim of this proposal is to enable chemical pathways for the production of amines through alcohols from renewable resources, preferably lignocellulose waste. Two key scientific challenges will be addressed: The development of efficient cleavage reactions of complex renewable resources by novel heterogeneous catalysts; and finding new homogeneous catalyst based on earth-abundant metals for the atom-economic coupling of the derived alcohol building blocks directly with ammonia as well as possible further functionalization reactions. The program is divided into 3 interrelated but not mutually dependent work packages, each research addressing a key challenge in their respective fields, these are: WP1: Lignin conversion to aromatics; WP2: Cellulose-derived platform chemicals to aromatic and aliphatic diols and solvents. WP3: New iron-based homogeneous catalysts for the direct, atom-economic C-O to C-N transformations. The approach taken will embrace the inherent complexity present in the renewable feedstock. A unique balance between cleavage and coupling pathways will allow to access chemical diversity in products that is necessary to achieve economic competitiveness with current fossil fuel-based pathways and will permit rapid conversion to higher value products such as functionalized amines that can enter the chemical supply chain at a much later stage than bulk chemicals derived from petroleum. The proposed high risk-high gain research will push the frontiers of sustainable and green chemistry and reach well beyond state of the art in this area. This universal, flexible and iterative approach is anticipated to give rise to a variety of similar systems targeting diverse product outcomes starting from renewables.

1 500 000 €

Start date: 2016-05-01, End date: 2022-04-30