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Results 61 - 80 of 623.


Physics - Chemistry - 25.01.2024
Precise measurements of the heaviest atoms
Precise measurements of the heaviest atoms
An international research team has successfully conducted ultra-precise X-ray spectroscopic measurements of helium-like uranium. The team, which includes researchers from Friedrich Schiller University Jena and the Helmholtz Institute Jena, has published results demonstrating their success in disentangling and separately testing one-electron two-loop and two-electron quantum electrodynamic effects for extremely strong Coulomb fields of the heaviest nuclei for the first time.

Physics - Electroengineering - 22.01.2024
Topological Quantum Device Produced
Topological Quantum Device Produced
A significant breakthrough has been achieved by quantum physicists from Dresden and Würzburg. They've created a semiconductor device where exceptional robustness and sensitivity are ensured by a quantum phenomenon. Semiconductor devices are tiny switching components that control electron flow in modern electronic devices.

Astronomy / Space - Physics - 18.01.2024
Mysterious object attracts attention
Mysterious object attracts attention
Data from the MeerKAT radio telescope reveal an object at the boundary between a black hole and a neutron star When astronomers cannot explain something directly, it often becomes really exciting. An international team led by researchers from the Max Planck Institute for Radio Astronomy and with the participation of the Max Planck Institute for Gravitational Physics has now discovered a mysterious tandem that has never been observed before: a system consisting of a neutron star and an object that, at first glance, should not even exist.

Physics - Astronomy / Space - 21.12.2023
The goldmine of a neutron star collision
The goldmine of a neutron star collision
International research team models the different signatures of a kilonova explosion simultaneously for the first time Neutron stars are the end products of massive stars and gather together a large part of the original stellar mass in a super-dense star with a diameter of only around ten kilometres.

Earth Sciences - Physics - 19.12.2023
New Findings on Rock Movements from the Earth’s Interior
Geologists from Heidelberg and Frankfurt simulate thermo-mechanical behaviour of a white schist from the Alps Movements of rocks from deep in the Earth to the surface could occur under different circumstances than previously thought, challenging our current understanding of plate tectonics and mountain-building.

Life Sciences - Physics - 04.12.2023
New method for localizing modifications in mRNA
New method for localizing modifications in mRNA
Andrea Rentmeister's team detects methylated sites with click chemistry The genetic information of an organism is stored in the form of DNA (deoxyribonucleic acid) in every cell. In order to be able to produce proteins with this blueprint, the DNA is first transcribed into so-called mRNA (messenger ribonucleic acid).

Astronomy / Space - Physics - 01.12.2023
A new possible explanation for the Hubble tension
A new possible explanation for the Hubble tension
Study by the Universities of Bonn and St. Andrews proposes a solution to one of the great mysteries of cosmology The universe is expanding. How fast it does so is described by the so-called Hubble-Lemaitre constant. But there is a dispute about how big this constant actually is: Different measurement methods provide contradictory values.

Chemistry - Physics - 29.11.2023
Releasing Brakes on Biocatalysis
Releasing Brakes on Biocatalysis
Formaldehyde can inhibit enzymes that produce hydrogen particularly efficiently. Researchers from Bochum have discovered how this can be prevented. Enzymes from microorganisms can produce hydrogen (H2) under certain conditions, which makes them potential biocatalysts for biobased H2 technologies. In order to make this hydrogen production efficient, researchers are trying to identify and eliminate possible limiting factors.

Life Sciences - Physics - 24.11.2023
How Bacteria Defend Themselves Against Plasmas
How Bacteria Defend Themselves Against Plasmas
A heat shock protein protects the cells against protein clumping. It degrades, however, over longer treatment periods. Plasmas are used, for example, in wound treatment against pathogens that are resistant to antibiotics. However, bacteria can defend themselves: They employ a heat shock protein that protects them.

Life Sciences - Physics - 21.11.2023
Tiny Beads Preserve Enzymes for Biocatalysis
Tiny Beads Preserve Enzymes for Biocatalysis
Plasmas can provide the co-substrate needed for biocatalysis of valuable substances, but are also harmful to enzymes. By attaching enzymes to small beads the enzymes are protected and remain active up to 44 times longer. Some enzymes, such as the one derived from fungi and investigated in this study, are able to produce valuable substances such as the fragrance (R)-1-phenylethanol.

Physics - Environment - 17.11.2023
Microplastics in arable soil: tomography with neutrons and X-rays shows where particles are deposited
Microplastics in arable soil: tomography with neutrons and X-rays shows where particles are deposited
A team of researchers from the University of Potsdam and the Helmholtz-Zentrum Berlin (HZB) has developed a measuring method to analyze soil samples with neutrons and X-rays and create 3D tomographies from them: This makes it possible for the first time to precisely localize microplastics in the soil.

Physics - 13.11.2023
Trust is good, control is safer
Trust is good, control is safer
A sophisticated device uses radio waves to determine whether states are really complying with nuclear weapons treaties When it comes to nuclear weapons, no state really wants to leave anything to chance. A small movement in nuclear weapons stocks can have a major impact. It is therefore important to monitor nuclear weapons treaties effectively and closely.

Astronomy / Space - Physics - 09.11.2023
Euclid Space Telescope Reveals First Scientific Images
Euclid Space Telescope Reveals First Scientific Images
Euclid, the new space telescope launched by the ESA with the involvement of German researchers, has published its first color photographs from outer space. Never before has a telescope been able to produce such sharp astronomical images of such a wide expanse of sky while looking so deep into the distant universe.

Physics - 08.11.2023
Generating cold with solids
Generating cold with solids
After more than a century, physicists aim to dethrone the tried-and-tested technology of the refrigerator, as cooling can be made more energy-efficient. The compressor technology used in today's refrigerators was invented more than a century ago. "The technology has been continuously optimized over the years, of course," says Daniel Hägele, physicist at Ruhr University Bochum, Germany.

Physics - Innovation - 30.10.2023
Monitoring nuclear weapons stockpiles with radio waves
Monitoring nuclear weapons stockpiles with radio waves
Monitoring whether states are complying with disarmament treaties is not an easy task. An international team has been exploring remote monitoring with the help of two antennas and a couple of mirrors. An international research team has proposed a new method for monitoring nuclear disarmament treaties.

Physics - Electroengineering - 26.10.2023
Spinaron, A Rugby in a Ball Pit
Spinaron, A Rugby in a Ball Pit
For the first time, experimental physicists from the Würzburg-Dresden Cluster of Excellence ct.qmat have demonstrated a new quantum effect aptly named the "spinaron." In a meticulously controlled environment and using an advanced set of instruments, they managed to prove the unusual state a cobalt atom assumes on a copper surface.

Physics - Health - 23.10.2023
Programmable matter: 'We can paint with the particles'
Programmable matter: ’We can paint with the particles’
Researchers find new physical effects in systems consisting of particles with an orientation-dependent propulsion speed Investigating systems consisting of self-propelled particles - so-called active particles - is a rapidly growing area of research. In theoretical models for active particles, it is often assumed that the particles' swimming speed is always the same.

Physics - Materials Science - 19.10.2023
A miniature magnetic resonance imager made of diamond
A miniature magnetic resonance imager made of diamond
Quantum sensors make microscale NMR spectroscopy possible A miniature magnetic resonance Nuclear magnetic resonance (NMR) is an important imaging method in research which can be used to visualize tissue and structures without damaging them. The technique is better known from the medical field as Magnetic Resonance Imaging (MRI), where the patient is moved into a bore of a large magnet on a table.

Chemistry - Physics - 18.10.2023
Chemists present method for the fluorination of enines
Chemists present method for the fluorination of enines
Research team from the University of Münster presents synthesis method in Nature Chemistry Fluorinated small molecules are very often used to produce medicines or agrochemicals. However, they rarely occur naturally. The societal importance of fluorinated substances, combined with the lack of natural sources, has created a demand for effective, sustainable methods to generate new fluorinated motifs - molecular structures containing one or more fluorine atom - from relatively simple starting materials.

Astronomy / Space - Physics - 11.10.2023
Central star in a planetary nebula reveals details of its life
Central star in a planetary nebula reveals details of its life
Stars like our sun end their lives as white dwarfs. Some of them are surrounded by a planetary nebula consisting of gas ejected by the dying star shortly before its death. An international research team led by Professor Klaus Werner of the Institute of Astronomy and Astrophysics at the University of has for the first time studied a central star of a planetary nebula located in an open star cluster.