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University of Freiburg


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Chemistry - Physics - 11:03
Important milestone on the way to transition metal catalysis with aluminum
Important milestone on the way to transition metal catalysis with aluminum
Chemists successfully synthesize a cationic, low-valent aluminum complex salt via metathesis The chemists Philipp Dabringhaus , Julie Willrett and Ingo Krossing from the Institute of Inorganic and Analytical Chemistry at the University of Freiburg have succeeded in synthesizing the low-valent cationic aluminum complex [Al(AlCp*) 3 ] + by a metathesis reaction.

Chemistry - Physics - 10.08.2022
Chemists develop new reagent for deelectronation
Chemists develop new reagent for deelectronation
The reagent provides access to the class of clustered transition metal carbonyl cations Chemists from Freiburg have succeeded in converting polynuclear transition metal carbonyls into their homoleptic complex cations using typical inorganic oxidants. In their work, the research team of Malte Sellin , Christian Friedmann and Ingo Krossing from the Institute of Inorganic and Analytical Chemistry and Maximilian Mayländer and Sabine Richert from the Institute of Physical Chemistry at the University of Freiburg show that the anthracene derivative with a half-step potential of 1.

Transport - 03.08.2022
New study on expectations and reality of safe overtaking maneuvers in bicycle traffic
Subjective impressions of safety differs according to the type of road and speed limit Dangerous situations can develop when cyclists are overtaken by cars. How threatened or safe cyclists feel during an overtaking maneuver depends on the type of road. They expect to be safer on roads with a speed limit of 30 kilometers per hour (kph), as well as on living streets, bike streets, and roads with cycle lanes.

Chemistry - Life Sciences - 27.07.2022
A Molecular Machine At Work
A Molecular Machine At Work
Researchers unravel the assembly of an enzyme that detoxifies the greenhouse gas N2O The greenhouse gas nitrous oxide (N2O) is produced as a by-product of industrial processes and through the use of fertilizers in agriculture. It makes a steadily growing contribution to climate change and ozone depletion.

Environment - 18.07.2022
Invasive gum rockrose threatens cork oaks in Portugal
Invasive gum rockrose threatens cork oaks in Portugal
Cork oaks change their water use strategy under strong competition from gum rockrose, thereby consuming less water What strategies and adaptive measures does the cork oak ( Quercus suber ) use in savanna-like ecosystems in southeastern Portugal to meet its water needs in summer and winter?

Life Sciences - 12.07.2022
Molecular Feedback-Loop for Plant Growth
Molecular Feedback-Loop for Plant Growth
Scientists discover previously unknown mechanism that regulates the growth hormone auxin Plant growth is not a uniform process: Plants grow in length at the shoot and root tip in particular, while in other places they form new leaves or flowers. These different processes must be coordinated with each another and at the same time react to external influences such as temperature and light.

Environment - 21.06.2022
Modern wind turbines can more than compensate for decline in global wind resource
Freiburg environmental meteorologists develop global techno-climatic scenarios and site projections until 2060 Wind energy contributes significantly to the energy sector's sustainable, low-CO2 transformation. However, the efficiency of wind turbines depends on available wind resources and the technical characteristics of the turbines.

Physics - Chemistry - 15.06.2022
New insights into binding configuration and mobility of molecules on nanoparticle surfaces
New insights into binding configuration and mobility of molecules on nanoparticle surfaces
Freiburg physicists investigate binding between molecules and nanoparticles with high resolution How molecules bind to a surface is of central importance in chemical reactions, making the possibility of studying binding configurations in isolated nanosystems of great interest. A Freiburg research team led by Dr. Lukas Bruder and Frank Stienkemeier has now succeeded in studying the binding configurations and mobility of organic molecules on ultracold noble gas particles.

Environment - Life Sciences - 09.06.2022
How crops can better survive floods
How crops can better survive floods
Researchers from Freiburg and Utrecht show which signaling pathways make plants more resistant to flooding Extreme weather phenomena are on the rise worldwide, including frequent droughts and fires. Floods are also a clear consequence of climate change. For agriculture, a flooded field means major losses: about 15 percent of global crop losses are due to flooding.

Life Sciences - Pharmacology - 03.06.2022
Deep Learning helps improve gene therapies and antiviral drugs
Team led by bioinformatician Rolf Backofen develops algorithm to identify anti-CRISPR protein The nuclease Cas13b associated with the CRISPR gene scissors, which is an enzyme that degrades nucleic acids, has the potential to be used in the future in hereditary diseases to switch off unwanted genes. In the fight against infections, this nuclease is also being researched as an antiviral agent, as Cas13b can specifically intervene in the genetic material of viruses and render them harmless.

Life Sciences - 31.05.2022
New insights into the movement of pine cone scales
New insights into the movement of pine cone scales
Cone scales open and close due to the interaction of multiple tissue layers, all of which respond to moisture Pine cones open when dry and close when wet. In this way, pine seeds are released only under advantageous conditions, namely when it is dry and the seeds can be carried far by wind. Opening and closing is of particular interest to researchers because the actuation is passive, that is, it does not consume metabolic energy.

Life Sciences - 31.05.2022
’FreiPose’ enables measurement of neuronal activity during the movement of individual body parts
New tracking method captures 3D motion of body points and can factor out the influence of unwanted movement A team led by Artur Schneider and Ilka Diester from the Institute of Biology III and Thomas Brox from the Department of Computer Science at the University of Freiburg have developed a new system that records the 3D movement of freely nameable body points: "FreiPose" uses several cameras and a special network architecture to recognize defined body points and track them.

Life Sciences - Laboratory - 05.05.2022
Cell division in moss and animals more similar than previously thought
Cell division in moss and animals more similar than previously thought
German-Japanese research team from Universities of Freiburg and Nagoya identifies what determines the site of cell division in plants For a new plant to grow from a seed, cells need to divide numerous times. Daughter cells can each take on different tasks and sometimes vary in size. How plants determine the plane of cell division in this process, known as mitosis, is being researched by Ralf Reski and Dr. Elena Kozgunova from the University of Freiburg in a joint effort with Prof. Dr. Gohta Goshima from Nagoya University.

Life Sciences - Health - 22.04.2022
New discoveries about the origin of the brain’s immune system
Important immune cells in the brain's blood vessels do not mature until after birth What gets into the brain and what doesn't is strictly regulated. Researchers at the Faculty of Medicine at the University of Freiburg have now studied phagocytes that coat the blood vessels in the brain and reinforce the blood-brain barrier.

Environment - Agronomy / Food Science - 20.04.2022
Bumblebees' nutrition influences their pesticide resistance
Bumblebees’ nutrition influences their pesticide resistance
Effects of a common fungicide differ depending on the plant to which it is applied How susceptible bumblebees are to a common fungicide depends on the flowering plants to which it is applied on and how diverse the food supply is that is available to the insects. Monocultures can increase the insects' sensitivity to the fungicide or generally have negative effects on health, growth and fertility.

Innovation - Materials Science - 19.04.2022
New process enables 3D printing of small and complex components made of glass in just a few minutes
New process enables 3D printing of small and complex components made of glass in just a few minutes
Scientists combine materials science invention with newly developed 3D printing technology Because of its outstanding transparency as well as its stability in contact with heat or chemicals, glass is relevant for many high-tech applications. However, conventional processes for shaping glass are often tedious, energy-intensive and quickly reach their limits for small and complicated components.

Physics - 13.04.2022
Rotating blue laser light reveals unimagined dynamics in living cells
Rotating blue laser light reveals unimagined dynamics in living cells
Using a novel laser-scanning microscope scientists observe processes in cells changing within milliseconds When cities transform into a colorful world of lights as darkness falls, it's often only possible to estimate their contours, which depending on the perspective can draw the attention to key details or trivia.

Health - 08.04.2022
Insights into the dynamic ultrastructure of the heart
Insights into the dynamic ultrastructure of the heart
Researchers publish work on the three-dimensional structure of the heart What happens below the cellular level when the heart contracts and relaxes has long been unexplored. Thanks to new ultra-high-resolution electron microscopy techniques, scientists can now watch the heart beating - almost at a molecular level.

Life Sciences - 30.03.2022
Proteins control light-induced seed germination in Arabidopsis thaliana
Proteins control light-induced seed germination in Arabidopsis thaliana
Freiburg biologists study the light signaling pathways in plants The seeds of a plant are relatively well protected against harmful environmental influences, while a seedling is very vulnerable. Therefore, plants in the early stage of development must closely control their seed germination: In time windows with good conditions they germinate very quickly, while in unfavorable conditions they effectively suppress seed germination.

Health - Life Sciences - 18.03.2022
Lung Tissue from the Lab
Lung Tissue from the Lab
Organoids could be used in diagnosis, drug development, and fundamental research Laboratory studies of lung tissue usually require the removal of large amounts of human or animal tissue. Now scientists from the University of Freiburg's Faculty of Medicine have succeeded in collaboration with American researchers in generating tiny quantities of lung tissue, so-called organoids, from just a few body cells in the lab.
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