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Results 61 - 80 of 89.


Chemistry - Health - 20.05.2022
Mini-fuel cell generates electricity using the body’s sugar
Glucose energy source for medicinal implants and sensors Mini-fuel cell generates electricity using the body's sugar Glucose is the most important energy source in the human body. Scientists at the Technical University of Munich (TUM) and the Massachusetts Institute of Technology (MIT) now want to use the body's sugar as an energy source for medicinal implants.

Physics - Chemistry - 19.05.2022
Ions and Rydberg-atoms: a bond between David and Goliath
Ions and Rydberg-atoms: a bond between David and Goliath
Physicists at the University of Stuttgart detect a novel binding mechanism between small and giagantic particles. [Picture: PI 5, Nicolas Zuber] Researchers at the 5th Physical Institute of the University of Stuttgart have verified a novel binding mechanism forming a molecule between a tiny charged particle and in atomic measures gigantic Rydberg atom.

Life Sciences - Chemistry - 17.05.2022
How faulty mRNA is detected and destroyed
Two similar proteins can stand in for each other in the quality control mechanism of defective mRNA. This has redefined the distribution of protein tasks / publication in 'The EMBO Journal'. Scientists led by Professor Dr Niels Gehring at the Institute for Genetics at the University of Cologne have investigated two similar proteins, UPF3A and UPF3B, which are involved in the quality control mechanism 'nonsense-mediated mRNA decay' (NMD).

Life Sciences - Chemistry - 04.05.2022
New insights into gene expression in nerve cells
New insights into gene expression in nerve cells
Genes are the carriers of our genetic information. They are read in our cells and used to produce ribonucleic acids (RNAs). During this process, termed transcription, the enzyme RNA polymerase II has a decisive influence on the exact time at which genes are read and on the intensity with which this happens.

Life Sciences - Chemistry - 29.04.2022
Love is in the air
Love is in the air
More blood flow to the genitals, an increased pulse and dilated pupils: These physical characteristics reveal that a person is sexually aroused. But lust can also be detected in the breath, as a study of an international research team has now shown. According to the study, a characteristic signature of volatile molecules is found in the breath of sexually aroused people.

Chemistry - Life Sciences - 22.04.2022
How equal charges in enzymes control biochemical reactions
How equal charges in enzymes control biochemical reactions
Research team led by Göttingen University describes fundamental principle of enzyme catalysis It is well known in physics and chemistry that equal charges repel each other, while opposite charges attract. It was long assumed that this principle also applies when enzymes - the biological catalysts in all living organisms - form or break chemical bonds.

Physics - Chemistry - 21.04.2022
Atomic terahertz vibrations generate soliton molecules
Atomic terahertz vibrations generate soliton molecules
Stable packets of light waves - called optical solitons - are emitted in ultrashort-pulse lasers as a chain of light flashes. These solitons often combine into pairs with very short temporal separation. Introducing atomic vibrations in the terahertz range, researchers at the Universities of Bayreuth and Wroclaw have now solved the puzzle of how these temporal links are formed.

Chemistry - Computer Science - 06.04.2022
Artificial Intelligence identifies small molecules
Artificial Intelligence identifies small molecules
A bioinformatics research team from Friedrich Schiller University Jena has won the 2022 Thuringian Research Prize for applied research, Thuringia's Science Minister Wolfgang Tiefensee announced today (06 April) in a video presentation. The prize of 12,500 euros, awarded for the development of machine learning methods for identifying small molecules, went to the team comprising Prof. Sebastian Böcker, Dr Kai Dührkop, Dr Markus Fleischauer, Dr Marcus Ludwig and Martin Hoffmann.

Life Sciences - Chemistry - 05.04.2022
Fitness needs the right timing
Fitness needs the right timing
Life on Earth runs in 24-hour cycles. From tiny bacteria to human beings, organisms adapt to alterations of day and night.

Chemistry - Environment - 31.03.2022
A new catalyst for sustainable chemistry
The alpha-olefins, consisting of carbon and hydrogen, are the most important precursors in the chemical industry. Researchers at the University of Bayreuth now present a discovery in the journal "Science" that opens up previously unimagined prospects for the design and the selective as well as sustainable production of these chemical products.

Physics - Chemistry - 30.03.2022
Less waste from lower enriched Uranium targets
Less waste from lower enriched Uranium targets
New separation process for key radiodiagnostic agent reduces radioactive waste Nuclear medicine uses technetium-99m among other things for tumor diagnostics. With over 30 million applications worldwide each year, it is the most widely used radioisotope. The precursor material, molybdenum-99, is mainly produced in research reactors.

Materials Science - Chemistry - 24.03.2022
MEET Team presents Toolbox for Analysis of End-of-Life-Batteries
MEET Team presents Toolbox for Analysis of End-of-Life-Batteries
Compared to laboratory cells or aged but still intact commercial cells, shredded battery materials represent an even more complex sample. Active materials of both electrodes, inactive materials and electrolyte residues cannot be easily analysed separately.

Chemistry - 22.03.2022
Catalytic hydrogen generation - without expensive precious metals
Catalytic hydrogen generation - without expensive precious metals
A research team from Friedrich Schiller University Jena has developed a molecular photosystem inspired by nature that generates hydrogen under visible light irradiation. In contrast to other existing systems of this type, it functions without the use of precious or heavy metals.

Chemistry - Physics - 21.03.2022
Chemists discover new reactivity of strained molecules
Chemists discover new reactivity of strained molecules
In synthetic organic chemistry, so-called cycloadditions are a particularly important class of reactions. With this type of reaction, ring-shaped molecules can be constructed simply and efficiently by joining ("adding") two compounds that each contain double bonds. A team led by Frank Glorius from the University of Münster has now succeeded in performing an unconventional cycloaddition in which a carbon-carbon double bond reacts with a carbon-carbon single bond.

Chemistry - Computer Science - 17.03.2022
With machine learning to new supramolecular materials
With machine learning to new supramolecular materials
New supramolecular materials can be used in energy production and medical devices. The team of the TUM Innovation Network ARTEMIS aims to identify the best supramolecular materials for use with the help of machine learning. A team of scientists at the TUM Innovation Network ARTEMIS (Artificial Intelligence Powered Multifunctional Material Design), named after the Greek goddess of hunting, are researching supramolecular materials.

Physics - Chemistry - 16.03.2022
Complex pathways influence time delay in ionization of molecules
Complex pathways influence time delay in ionization of molecules
Study shows how the mechanism of photoionization can be used to gain insights into complex molecular potentials How can researchers use the mechanism of photoionization to gain insight into complex molecular potential? This question has now been answered by a team led by Giuseppe Sansone from the Institute of Physics at the University of Freiburg.

Life Sciences - Chemistry - 09.03.2022
Universal Mechanism of Methane Formation Discovered
Universal Mechanism of Methane Formation Discovered
Scientists from Heidelberg and Marburg prove that the greenhouse gas is formed chemically in the cells of all organisms The formation of the greenhouse gas methane is based on a universal mechanism. Scientists at Heidelberg University and the Max Planck Institute for Terrestrial Microbiology in Marburg have made this discovery.

Life Sciences - Chemistry - 08.03.2022
Mushroom genus Cortinarius follows its own metabolic pathway
Mushroom genus Cortinarius follows its own metabolic pathway
What proves to be advantageous will be preserved in the long term. Put in very simple terms, this is the principle of evolution whereby organisms adapt to an environment in the best possible way. These adaptation processes often result in similar or the same traits in different groups of organisms, if their environment requires it.

Life Sciences - Chemistry - 06.03.2022
Shaping up the Genome for Cell Division
Shaping up the Genome for Cell Division
Researchers from Heidelberg and Würzburg have uncovered the inner workings of the molecular machinery that shapes chromosomes during cell division. Our cells perform a marvel of engineering when it comes to packing information into small spaces. Every time a cell divides, it bundles up an amazing 4 metres of DNA into 46 tiny packages, each of which is only several millionths of a metre in length.

Chemistry - Life Sciences - 03.03.2022
New method to produce chemically modified mRNA developed
In a recent study, the research group at the University of Cologne's Institute of Organic Chemistry led by Professor Dr Stephanie Kath-Schorr describes a novel method for the enzymatic production of synthetic messenger RNA (mRNA). While natural base modifications of mRNA are already being used - for example by BioNTech/Pfizer for the production of their coronavirus vaccine - this newly developed mRNA additionally contains site-specifically introduced, non-natural nucleotides.