Results 1 - 20 of 23.
Life Sciences - Chemistry - 27.12.2019
New insights into the earliest events of seed germination
Plant seeds may strike the casual observer as unspectacular - but they have properties that are nothing short of superpowers. In a dry state they can store their energy for years and then suddenly release it for germination when environmental conditions are favourable. One striking example is the "super bloom" in the Death Valley National Park, when seeds that have endured the dry and hot desert for decades suddenly germinate at rainfall followed by a rare and spectacular desert bloom several months later.
Chemistry - Physics - 13.12.2019
Hydrogen as a Climate-neutral Fuel
A team of researchers from Freie Universität Berlin, the University of Bochum, and the University of Linz has succeeded in observing the transfer of protons in a hydrogenase reaction. No 391/2019 from Dec 13, 2019 Scientists from Freie Universität Berlin, the University of Bochum, and the University of Linz have found evidence for the design of so-called biomimetic catalysts.
Chemistry - Pharmacology - 03.12.2019
Two chiral catalysts working hand in hand
Chemists at Münster University develop a synthetic method providing access to different stereoisomers of a molecule / Study published in 'Nature Catalysis' Just as our left hand is not superposable to our right hand, the mirror image of certain molecules cannot be overlapped onto it, even when turned or twisted.
Chemistry - Life Sciences - 14.11.2019
Chemists use light to build biologically active compounds
Some of the most biologically active molecules, including synthetic drugs, contain a central, nitrogen-containing chemical structure called an isoquinuclidine. This core has a three-dimensional shape which means it has the potential to interact more favourably with enzymes and proteins than flat, two-dimensional molecules.
Chemistry - Physics - 14.11.2019
New synthesis approach for soluble silicon clusters
Theoretical calculations indicate that under certain conditions silicon can endow solar cells with a much higher efficiency. Small silicon clusters may provide a source of accordingly modified silicon. However, to date these clusters have not been accessible in soluble form, a prerequisite for flexible processing.
Chemistry - Physics - 22.10.2019
Münster University chemists create new types of Lewis acids
Researchers at the University of Münster have developed a method which makes it possible to create three-coordinate Lewis superacids on the basis of phosphorus. Previously, it had not been possible to isolate this type of compound, either in a liquid or in a solid state, due to its extreme electrophilicity and the associated reactivity.
Life Sciences - Chemistry - 22.10.2019
Researchers gain new insights into the evolution of proteins
How do bacteria manage to adapt to synthetic environmental toxins and, for example, to even develop strategies for using a pesticide and chemical warfare agent as food within less than 70 years' The evolutionary adaptations underlying such processes have now been studied in detail by an international team of researchers.
Life Sciences - Chemistry - 17.10.2019
How roots grow hair
The roots of plants can do a lot of things: They grow in length to reach water, they can bend to circumvent stones, and they form fine root hairs enabling them to absorb more nutrients from the soil. A team of researchers led by scientists at the Technical University of Munich (TUM) has now identified an important regulator of this process.
Physics - Chemistry - 20.09.2019
New method for the measurement of nano-structured light fields
Münster researchers combine nano-optics and organic chemistry to measure complex light landscapes in the tight focus of a laser beam / Study published in "Nature Communications" Structured laser light has already opened up various different applications: it allows for precise material machining, trapping, manipulating or defined movement of small particles or cell compartments, as well as increasing the bandwidth for next-generation intelligent computing.
Chemistry - Life Sciences - 20.09.2019
Quality control in immune communication
The cells of our immune system constantly communicate with one another by exchanging complex protein molecules. A team led by researchers from the Technical University of Munich (TUM) has now revealed how dedicated cellular control proteins, referred to as chaperones, detect immature immune signaling proteins and prevent them from leaving the cell.
Chemistry - Innovation - 06.09.2019
Innovative method provides unique insights into the structure of cells and tissues
Cells are the basic building blocks of life - and, as such, they have been the object of intense study since the invention of the optical microscope in the 17th century. The development of mass spectrometry (MS) methods - those which define the chemical composition of cells - represented a further milestone for research in the field of cell biology.
Chemistry - Physics - 03.07.2019
Activity of fuel cell catalysts doubled
Fuel cells may well replace batteries as the power source for electric cars. They consume hydrogen, a gas which could be produced for example using surplus electricity from wind power plants. However, the platinum used in fuel cells is rare and extremely expensive, which has been a limiting factor in applications up to now.
Chemistry - Pharmacology - 02.07.2019
Chemists give chance a helping hand
Whether they are synthetic materials such as PET and Teflon, medicines or flavourings, life without synthetically produced compounds is barely conceivable in our everyday lives today. The chemical industry depends on efficient, long-term methods of producing synthetically derived molecules. For this purpose, chemists often use catalysts, i.e. additives with which they can facilitate and control chemical reactions.
Life Sciences - Chemistry - 14.06.2019
Why does dandelion never fall ill?
Researchers at Münster University find out that dandelion possesses enzymes that have untypical abilities for plants / Study in "Angewandte Chemie' Plants possess enzymes called polyphenoloxidases, which can oxidize certain chemical compounds and thus produce the typical brown colour that we know, for example, from freshly cut apples.
Earth Sciences - Chemistry - 16.05.2019
Geologists discover previously unknown region of the Earth’s mantle
The Bermuda Islands - a very special terrain in the middle of the western Atlantic Ocean, not only for its white beaches, but also because the archipelago is at the top of a 4,570-metre high volcano that died out about 30 million years ago. An international team of researchers has now taken a closer look at this geological peculiarity and geochemically examined the magma rock under Bermuda for the first time.
Life Sciences - Chemistry - 11.04.2019
How plants defend themselves
Like humans and animals, plants defend themselves against pathogens with the help of their immune system. But how do they activate their cellular defenses' Researchers at the Technical University of Munich (TUM) have now discovered that receptors in plant cells identify bacteria through simple molecular building blocks.
Life Sciences - Chemistry - 03.04.2019
Tipping the scales
Human cells have a sophisticated regulatory system at their disposal: labeling proteins with the small molecule ubiquitin. In a first, a team from the Technical University of Munich (TUM) has succeeded in marking proteins with ubiquitin in a targeted manner, in test tubes as well as in living cells.
Physics - Chemistry - 27.03.2019
Toxic and aggressive, but widely used
In toothpaste, Teflon, LEDs and medications, it shows its sunny side - but elemental fluorine is extremely aggressive and highly toxic. Attempts to determine the crystal structure of solid fluorine using X-rays ended with explosions 50 years ago. A research team has now clarified the actual structure of the fluorine using neutrons from the Heinz Maier Leibnitz Research Neutron Source (FRM II).
Chemistry - Pharmacology - 22.03.2019
Inert Nitrogen Forced to React with Itself
03/22/2019 Direct coupling of two molecules of nitrogen: chemists from Würzburg and Frankfurt have achieved what was thought to be impossible. This new reaction is reported and opens new possibilities for one of the most inert molecules on earth. Constituting over 78 % of the air we breathe, nitrogen is the element found the most often in its pure form on earth.
Life Sciences - Chemistry - 20.03.2019
Discovery of a new heart muscle component
In order for the heart to work properly, it must exert muscular force. This involves the coordinated contraction of numerous sarcomeres, the smallest contractile units of heart muscle. Muscle contraction is brought about by the activity of conventional motor proteins, which pull on thin filaments to shorten sarcomeres.