Results 141 - 160 of 556.
Physics - Health - 14.10.2022
Universität Hamburg team measures the uptake of co-enzymes by individual cells
Promising methods of measurement should provide data and insights for combating chronic illnesses and cancer. Universität Hamburg team measures the uptake of co-enzymes by individual cells Within the framework of a contract to conduct research into human skin cells, a research team at Universität Hamburg, together with the Frauenhofer Institute for Applied Polymer Research (IAP), DESY, and the Beiersdorf corporation, measured how much co-enzyme Q10 cells had taken up.
Physics - Life Sciences - 13.10.2022
Researchers provide new insights into photosynthesis
Photosynthesis is the most important basis of life on Earth. In it, plants and single-cell algae use the energy of sunlight and convert this energy into sugar and biomass. In this process, oxygen is released. Plant biotechnologists and structural biologists from the Universities of Münster and Stockholm (Sweden) have clarified the structure of a new protein complex which catalyses energy conversion processes in photosynthesis.
Physics - 06.10.2022
Milestones achieved on the path to useful quantum technologies
Researchers at Paderborn and Ulm universities are developing the first programmable optical quantum memory Tiny particles that are interconnected despite sometimes being thousands of kilometres apart - Albert Einstein called this 'spooky action at a distance'. Something that would be inexplicable by the laws of classical physics is a fundamental part of quantum physics.
Chemistry - Physics - 03.10.2022
Artificial Enzyme Splits Water
Progress has been made on the path to sunlight-driven production of hydrogen. Chemists from Würzburg present a new enzyme-like molecular catalyst for water oxidation. Mankind is facing a central challenge: it must manage the transition to a sustainable and carbon dioxide-neutral energy economy. Hydrogen is considered a promising alternative to fossil fuels.
Physics - Materials Science - 30.09.2022
Quantum matter: entanglement of many atoms detected for the first time
New insights into quantum phenomena at phase transitions In the past, quantum phenomena could be investigated only in the realm of just a few atoms. A research team from the Technical University of Munich (TUM) and the Technical University of Dresden (TUD) has now discovered conditions for which quantum entanglement dominates on much larger scales.
Physics - Health - 29.09.2022
How contrast agents disperse inside cells
Detailed images of cells with X-ray contrast agents Contrast agents are often used to improve the imaging of soft tissue in micro-computed tomography (microCT). Now a research team led by the Technical University of Munich (TUM) has investigated how these agents disperse inside cells. Their findings could improve the assessment and further development of contrast agents and might contribute to future medical diagnostics.
Physics - 23.09.2022
Scientists propose test for hypothesis of Nobel laureate Steven Weinberg
Quantum mechanics put to the test For almost 100 years, quantum mechanics has been one of the pillars of modern physics. It has made it possible for the first time to describe processes in the microscopic subatomic world, for example inside atoms, very precisely and accurately.
Astronomy / Space Science - Physics - 22.09.2022
Gas bubble swirls around the heart of the Milky Way
Researchers discover a hot spot near the Sagittarius A* black hole with the Alma radio telescope. There is a black hole in the center of our Milky Way. In the immediate vicinity of this mass monster called Sagittarius A*, things are turbulent. Now, an international group led by Maciek Wielgus of the Max Planck Institute for Radio Astronomy in Bonn has discovered an object that orbits the black hole on a very narrow path in only about 70 minutes.
Astronomy / Space Science - Physics - 22.09.2022
Hot gas bubble swirls around the heart of the Milky Way
Researchers discover a hot spot near the black hole Sagittarius A* with the radio telescope ALMA There is a black hole in the centre of our Milky Way. In the immediate vicinity of this mass monster called Sagittarius A*, things are turbulent. Now an international group led by Maciek Wielgus from the Max Planck Institute for Radio Astronomy in Bonn has discovered an object that orbits the black hole on a very narrow path in only about 70 minutes.
Chemistry - Physics - 21.09.2022
Chiral oxide catalysts align electron spin
Controlling the spin of electrons opens up future scenarios for applications in spin-based electronics (spintronics), for example in data processing. It also presents new opportunities for controlling the selectivity and efficiency of chemical reactions. Researchers recently presented first successes with the example of water splitting for producing "green" hydrogen and oxygen.
Chemistry - Physics - 15.09.2022
Pushing the boundaries of chemistry: Properties of heaviest element studied so far measured at GSI/FAIR
Superheavy element flerovium is a volatile metal An international research team has succeeded in gaining new insights into the chemical properties of the superheavy element flerovium - element 114 - at the accelerator facilities of the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt. The measurements show that flerovium is the most volatile metal in the periodic table.
Chemistry - Physics - 14.09.2022
New Oxidation State of Rhodium
Previously unknown oxidation state of rhodium(VII) could play a role in chemical reactions Mayara da Silva Santos , doctoral candidate at the University of Freiburg's Institute of Physics, has discovered a new oxidation state of rhodium. This chemical element is one of the most catalytically important platinum-group metals and is used, for example, in catalytic converters for automobiles.
Chemistry - Physics - 12.09.2022
When the chemistry is (not) right: Influence of the microscopic environment
Research team investigates reactivity of single molecules under controlled conditions Researchers around the world are working to develop efficient materials to convert CO2 into usable chemical substances. This is especially important in light of global warming. A team from the University of Göttingen and the Ulsan National Institute for Science, South Korea, has found a promising approach: Catalytically active molecules are anchored to a surface that serves as a conductive electron supplier.
Chemistry - Physics - 12.09.2022
Making and breaking of chemical bonds in single ’nanoconfined’ molecules
Research team investigates reactivity of single molecules under controlled microscopic conditions Researchers around the world are working to develop efficient materials to convert CO2 into usable chemical substances - work that is particularly pressing in view of global warming.
Physics - Chemistry - 07.09.2022
Researchers study catalytic activity of copper atoms
Fuel cells convert chemical reaction energy into electric power and heat. They are used, for example for the development of electric vehicles, in aviation and aeronautics or for sustainable energy supplies. During the conversion of energy, the catalytic reduction of oxygen plays an important role. Therefore, the development of efficient, inexpensive catalysts is extremely important.
Health - Physics - 02.09.2022
Naturally Occurring Substances Against Coronavirus
Researchers at Universität Hamburg and DESY have identified 3 substances that are promising for the development of anti-corona medication. All of the substances have already been used in medications, writes the team in its article in. The research team headed by Christian Betzel from Universität Hamburg and Dr. Alke Meents from DESY has conducted extensive screening of a large library of naturally occurring substances.
Physics - Chemistry - 01.09.2022
Less risk, less costs: Portable spectroscopy devices could soon become real
New method for the detection of alcohols combines zeroto ultralow-field nuclear magnetic resonance with the SABRE-Relay hyperpolarization technique Nuclear magnetic resonance (NMR) is an analytical tool with a wide range of applications, including the magnetic resonance imaging that is used for diagnostic purposes in medicine.
Astronomy / Space Science - Physics - 25.08.2022
Carbon dioxide in an exoplanet atmosphere
The James-Webb-Telescope provides insights into the composition and formation of planets outside our solar system. Using the James Webb Space Telescope, an international collaboration of astronomers with Laura Kreidberg of the Max Planck Institute for Astronomy has captured infrared light filtered through the atmosphere of a hot gas giant 700 light-years away.
Physics - Materials Science - 17.08.2022
Building blocks of the future for photovoltaics
Research team led by Göttingen University observes formation of "dark" moiré interlayer excitons for the first time An international research team led by the University of Göttingen has, for the first time, observed the build-up of a physical phenomenon that plays a role in the conversion of sunlight into electrical energy in 2D materials.
Chemistry - Physics - 12.08.2022
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.