Archive
Shortcut to protein portraits
All living organisms, from bacteria to humans, rely on proteins to perform their vital functions. How these proteins accomplish their tasks depends on their structure. Researchers from the Paul Scherrer Institute have now devised a novel method to determine the crystal structure of proteins using X-ray light, which could also hasten the development of new drugs in future. The study will be published in the journal Nature Methods on 15 December.
Biomasse als Stütze der Energiewende
Mit 80 Teilnehmerinnen und Teilnehmern fand am 2. Dezember am Paul Scherrer Institut PSI die erste Jahreskonferenz des Kompetenzzentrums des Bundes für Bioenergie (SCCER BIOSWEET) statt. Das im Rahmen des Aktionsplans Energieforschung Schweiz gegründete Kompetenzzentrum definierte in der Tagung die Ziele, Strategien und Positionierung der Bioenergie-Forschung vor dem Hintergrund der neuen schweizerischen Energiepolitik.This news release is only available in German.
SwissFEL ready for assembly
Researchers from PSI have spent the last four years developing key technologies for the X-ray laser SwissFEL and subjecting them to the acid test in the injector test facility. Now that the development programme has drawn to a close, the installation of the new large research facility is due to get underway in early 2015.
Ist dies der richtige Zeitpunkt für ein waghalsiges Experiment?
PSI-Direktor Joël Mesot hat sich heute in der Aargauer Zeitung mit einem Gastkommentar zur Debatte um die Ecopop-Initiative geäussert. Lesen Sie hier seinen vollständigen Text.This news release is only available in German.
Das Kompetenzzentrum Speicherung zieht nach einem Jahr Bilanz
Am vergangenen 4. November fand am Paul Scherrer Institut das erste Jahressymposium des Kompetenzzentrum des Bundes für Forschung zu Strom- und Wärmespeicherung (SCCER Heat and Electricity Storage) statt. Vertreter aus den beteiligten Forschungsgruppen sowie aus Industrieunternehmen mit einem Bezug zum Thema Speicherung berichteten in ihren Vorträgen über die jüngsten Fortschritte auf dem Gebiet der Wärme- und Stromspeicherung in der Schweiz. Die Tagung zeigte die Intensität der Transformationen, die von der Energiestrategie 2050 in Gang gesetzt worden sind.This news release is only available in German.
When thawing glaciers release pollutants
As glaciers increasingly melt in the wake of climate change, it is not only the landscape that is affected. Thawing glaciers also release many industrial pollutants stored in the ice into the environment. Now, within the scope of a Swiss National Science Foundation project, researchers from the Paul Scherrer Institute (PSI), Empa, ETH Zurich and the University of Berne have measured the concentrations of a class of these pollutants à polychlorinated biphenyls (PCB) à in the ice of an Alpine glacier accurately for the first time.
Competitive thanks to high pressure
Various basic materials for the chemical industry are manufactured using technology developed by the Ticino based company, Casale. The chemical compounds produced serve to make products like synthetic fertilisers or Plexiglas. In co-operation with PSI, Casale aims to make these production processes even more efficient as basic chemical products are export goods that face stiff competition around the globe. Tiny differences in production costs can be decicive when it comes to which licence a plant operator goes for.
During winter smog fire places put cars in the shade
On winter smog days in Switzerland wood burning is the main source of harmful carbon-containing fine particles. This is revealed by a large-scale Swiss study on fine particle pollution conducted over a five-year period by scientists at the Paul Scherrer Institute (PSI), the University of Bern and ETH Zurich.
Puzzling new behaviour observed in high-temperature superconductors
New effect might be important for emergence of High-Temperature SuperconductivityAn international team of researchers has observed a new, unexpected kind of behaviour in copper-based high-temperature superconductors. Explaining the new phenomenon à an unexpected form of collective movement of the electrical charges in the material à poses a major challenge for the researchers. A success in explaining the phenomenon might be an important step toward understanding high-temperature superconductivity in general. The crucial experiments were conducted at the Paul Scherrer Institute.
A large research facilities disappears in the woods
The building of the new PSI large research facility SwissFEL in Würenlingen forest could only enjoy the sunshine for a brief spell: it is now disappearing under a mound of earth. This superstructure is one of the measures taken to integrate the facility as harmoniously as possible into the natural environment.
Useful for spintronics: Big surprises in a thin surface region
The need for ever faster and more efficient electronic devices is growing rapidly, and thus the demand for new materials with new properties. Oxides, especially ones based on strontium titanate (SrTiO3), play an important role here. A collaborative project headed by scientists from the PSI has now revealed properties of strontium titanate that make it an important base material for applications in spintronics.
New Renewables on integration course
The Swiss government’s Energy Strategy 2050 includes a significant expansion of renewable energy such as solar and wind power. The integration of this electric energy, which is produced in a decentralised way and with temporal fluctuations, poses a major challenge for power grids. One possible solution involves using the electricity surplus that would otherwise overload the grid for the production of gases such as hydrogen or methane. The electric energy would thus be stored temporarily in form of chemical energy. These gaseous energy carriers can be converted back into electricity, heat or kinetic energy (in gas engines) at a later date as and when needed. Dubbed power to gas, the concept is the focus of the new Energy System Integration (ESI) Platform at PSI.
Foundation Stone Ceremony Marks Scientific Importance of ESS
Today, several hundred members of the European scientific community gathered at the European Spallation Source (ESS) construction site in Lund, Sweden, for the ESS Foundation Stone Ceremony. The event was held to lay the foundation’ both for the new facility, which has recently begun construction, and for a new generation of science in Europe.
The last piece of the puzzle
Julia H. Smith is a postdoctoral fellow working on detectors for the SwissFEL x-ray free electron laser, which can be envisioned as the eyes of the new PSI large-scale facility. During her time at PSI, she has a good chance of accompanying her detector up to its use at the new facility. Even more important than witnessing the first experiments at SwissFEL is acquiring new knowledge and skills during my time as a postdoc at PSI. Smith would like to continue working in the field of detectors and technology development after her postdoc à at a company or at another research institute.
Giants who control miniscule particles
Magnets are the unsung heroes in particle accelerators because they keep protons or electrons on track. But such magnets have very little in common with the small ones on the domestic fridge door. Quite a few of the magnets at PSI are heavier and bulkier than the fridge itself, yet despite this they are also masterpieces of precision and control.
A reliable type from the 1980s
The source of the proton beam at PSI is a retro-style Cockcroft-Walton linear accelerator. Since 1984 it has been the first acceleration stage for protons which are taken up to around 80 percent of the speed of light by two further ring accelerators. This has resulted in the generation of a significant proton beam over decades, and which has even held the world record as the highest performing beam since 1994 thanks to ongoing retrofitting.
Airpocalypse explained
The causes of China's record level fine particulate pollution in winter 2013 At the beginning of 2013 a greyish-brown blanket of smog lay over large areas of China for several months. The fine particle pollution was higher by 1 to 2 orders of magnitude than the levels normally measured in Western Europe and the United States. An international team of researchers under the lead of the Paul Scherrer Institute PSI and the Institute of Earth Environment, Chinese Academy of the Sciences revealed the causes of the airpocalypse. The study published in the journal Nature also describes what steps are to be taken to prevent an environmental crisis of this kind in the future.
Energiewende in Reinkultur – in Wädenswil zu bestaunen
Der am Paul Scherrer Institut PSI entwickelte Prozess der hydrothermalen Methanierung von wässriger Biomasse erreicht einen wichtigen Meilenstein: Dank der Zusammenarbeit im neuen Kompetenzzentrum des Bundes für Bioenergie BIOSWEET konnten Forschende des PSI, der ZHAW, der ETH Lausanne, der Empa und der Hochschule für Technik Rapperswil die technische Machbarkeit der Methanherstellung aus Mikroalgen demonstrieren. Der dazu verwendete Algenbioreaktor sowie die Anlage zur Methanierung der Algen können am 24. September auf dem Campus Grüental der ZHAW in Wädenswil besichtigt werden. Für Medienschaffende gibt es von 14:00 bis 14:30 eine spezielle Führung.This news release is only available in German.
New material generated with light
PSI researchers garner experience for SwissFEL experimentsAided by short laser flashes, researchers at the Paul Scherrer Institute have managed to temporarily change a material’s properties to such a degree that they have à to a certain extent àcreated a new material. This was done using the x-ray laser LCLS in California. Once the PSI x-ray laser SwissFEL is up and running, experiments of this kind will also be possible at PSI.
Jurassic Welsh mammals were picky eaters, study finds
New analyses of tiny fossil mammals from South Wales are shedding light on the function and diets of our earliest ancestors, a team led by researchers from the Universities of Bristol and Leicester report in the journal Nature. The team used CT scanning with synchrotron X-rays at PSI’s Swiss Light Source to reveal in unprecedented detail the internal anatomy of the mammals’ tiny jaws.