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Results 1041 - 1060 of 3956.


Life Sciences - Chemistry - 21.06.2022
Using light to activate mRNA: Biochemists use new tool to control mRNA by means of light
Using light to activate mRNA: Biochemists use new tool to control mRNA by means of light
DNA (deoxyribonucleic acid) is a long chain of molecules composed of many individual components, and it forms the basis of life on Earth. The function of DNA is to store all genetic information. The translation of this genetic information into proteins - which an organism needs to function, develop and reproduce - takes place via mRNA (messenger ribonucleic acid).

Chemistry - Physics - 21.06.2022
A nose for damaged plants and fake perfumes
A nose for damaged plants and fake perfumes
Researchers develop a highly sensitive novel technique capable of detecting chiral molecules within complex gas mixtures The chiral signature of a fragrance can reveal whether a perfume is genuine or fake. Similarly, the chiral signature of the emissions of a plant can provide information on whether the plant is healthy or sick.

Chemistry - Environment - 20.06.2022
Damaged plants and fake perfumes can be identified rapidly and reliably in real time
Damaged plants and fake perfumes can be identified rapidly and reliably in real time
Researchers develop a highly sensitive novel technique capable of detecting chiral molecules within complex gas mixtures The chiral signature of a fragrance can reveal whether a perfume is genuine or fake. Similarly, the chiral signature of the emissions of a plant can provide information on whether the plant is healthy or sick.

Chemistry - Physics - 16.06.2022
New approach topples major barrier to commercialisation of organic flow batteries
Researchers from the University of Cambridge and Harvard University have developed a method to dramatically extend the lifetime of organic aqueous flow batteries, improving the commercial viability of a technology that has the potential to safely and cheaply store energy from renewable sources such as wind and solar.

Materials Science - Chemistry - 16.06.2022
Graphene dust not harmful
Graphene dust not harmful
Graphene-based particles released from polymer composites after abrasion induce negligible health effects. Under the leadership of Empa, an international research team of the Graphene Flagship project conducted a study on the health risks of graphene-containing nanoparticles and recently published the results in Journal of Hazardous Materials.

Chemistry - 15.06.2022
Diseased plants and wrong perfume can be identified quickly, reliably and in real time
Diseased plants and wrong perfume can be identified quickly, reliably and in real time
New method reveals chiral molecules in a gas mixture with high sensitivity Whether a perfume is genuine or fake is revealed by the chiral signature of the scent. Similarly, the chiral signature of a plant's odor can tell whether it is healthy or diseased. Researchers at Johannes Gutenberg University Mainz (JGU) and the Max Planck Institute for Chemistry have discovered this using a new technique.

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.

Life Sciences - Chemistry - 15.06.2022
Building Block for a Longer Life
Building Block for a Longer Life
Heidelberg plant researchers identify key protein in a mechanism that controls the life of proteins Proteins are existential building blocks of life that also have numerous functions in plants. An average plant cell contains more than 20 billion protein molecules that maintain cellular metabolism and stabilise their structure.

Astronomy & Space - Chemistry - 14.06.2022
Gaia mission sees strange stars in most detailed Milky Way survey to date
Gaia mission sees strange stars in most detailed Milky Way survey to date
The ESA Gaia mission has released its new treasure trove of data about our home galaxy. Astronomers - including Professor Conny Aerts from KU Leuven - describe strange 'starquakes', stellar DNA, asymmetric motions and other fascinating insights in this most detailed Milky Way survey to date. Gaia is ESA's mission to create the most accurate and complete multi-dimensional map of the Milky Way.

Materials Science - Chemistry - 14.06.2022
A biological super glue from mistletoe berries?
A biological super glue from mistletoe berries?
Each mistletoe berry can produce up to two metres of a gluey thread called viscin. It allows the seeds of this parasitic plant to stick to and infect host plants. Since ancient times, mistletoe berries have been explored as treatments for everything from infertility and epilepsy to cancer. But, until now, no one has fully investigated the potential medical or technical uses of the glue itself.

Chemistry - 13.06.2022
Chemists develop new multi-component reaction
Chemists develop new multi-component reaction
More environmentally friendly approach produces complex molecular structures in one step / Ketyl radicals "tamed" by photocatalysis A more sustainable use of chemical resources is part of the United Nations' Agenda 2030. Synthetic chemists are therefore working to design and carry out efficient syntheses.

Astronomy & Space - Chemistry - 13.06.2022
Largest chemical map of the Milky Way unveiled
Largest chemical map of the Milky Way unveiled
The European Space Agency's Gaia mission involving UCL researchers has released a new treasure trove of data about our home galaxy, including the largest chemical map ever produced and the full 3D motions of 35 million stars. Gaia is ESA's mission to create the most accurate and complete multi-dimensional map of the Milky Way.

Chemistry - Life Sciences - 10.06.2022
How the first biomolecules could have been formed
How the first biomolecules could have been formed
The chemical precursors of present-day biomolecules could have formed not only in the deep sea at hydrothermal vents, but also in warm ponds on the Earth's surface. The chemical reactions that may have occurred in this "primordial soup" have now been reproduced in experiments by an international team led by researchers of Friedrich Schiller University Jena.

Materials Science - Chemistry - 09.06.2022
Researchers envision wood-derived, self-powered biosensors for wireless devices
Researchers envision wood-derived, self-powered biosensors for wireless devices
Wood-derived materials can be used to harvest electrical energy from everyday movements such as walking, according to University of Toronto and University of Waterloo researchers. In a new study recently published in Nano Energy , the team demonstrated the use of lignocellulosic nanofibrils - derived from tree bark - in a prototype self-powered device capable of sending a wireless signal to a smartphone via bluetooth.

Materials Science - Chemistry - 08.06.2022
On the road to the super-battery
On the road to the super-battery
A research team led by the Technical University of Munich (TUM) has taken an in-depth look at the internal workings of batteries during charging and discharging. Their findings may help optimize charging processes. When an electric car is being charged, the charge indicator moves quickly at first, be then much more slowly at the end.

Health - Chemistry - 07.06.2022
Mucus molecules can thwart fungal infection
Mucus molecules can thwart fungal infection
Candida albicans is a yeast that colonizes the mucosal surfaces of most healthy humans. Under certain conditions, it can switch to a harmful form and cause infection. Researchers have now identified components of mucus that keep the pathogen from turning destructive, thus laying the foundation for a new class of drugs.

Chemistry - 03.06.2022
Identifying 'lazy' and 'industrious' Cells in Biocatalysis
Identifying ’lazy’ and ’industrious’ Cells in Biocatalysis
Breakthrough in tracking biocatalysis by single cells opens up new possibilities in "green chemistry" The transformation of chemical compounds by living cells - so-called whole-cell biocatalysts - is a process that has been known for some time and has led to a wealth of interesting products. This is evident, for example, in traditional processes such as bread baking or beer brewing, where molecules produced by yeast fungi contribute significantly to flavor.

Chemistry - 03.06.2022
Ensuring pollen survival: When putting on your coat becomes a collaborative activity
Publication of the RDP in the journal PNAS on May 24, 2022. CNRS-INSB communication on May 30, 2022. Pollen viability depends on a tough external barrier called the pollen wall. Pollen wall components are produced by tapetum cells, which surround developing pollen grains within the anther. Precise coordination of tapetum activity with pollen grain development is required to ensure effective pollen wall formation.

Environment - Chemistry - 03.06.2022
A novel path for sustainable photon upconversion with non-precious metals
A novel path for sustainable photon upconversion with non-precious metals
Scientists in Mainz and Berlin use chromium for efficient green-to-blue photon upconversion Sustainable chemical applications need to be able to employ renewable energy sources, renewable raw materials, and earth-abundant elements. However, to date many techniques have only been possible with the use of expensive precious metals or rare earth metals, the extraction of which can have serious environmental impacts.

Chemistry - Materials Science - 02.06.2022
'Fruitcake' structure observed in organic polymers
’Fruitcake’ structure observed in organic polymers
Researchers have analysed the properties of an organic polymer with potential applications in flexible electronics and uncovered variations in hardness at the nanoscale, the first time such a fine structure has been observed in this type of material. The field of organic electronics has benefited from the discovery of new semiconducting polymers with molecular backbones that are resilient to twists and bends, meaning they can transport charge even if they are flexed into different shapes.