Showing 20 articles starting at article 1061

< Previous 20 articles        Next 20 articles >

Categories: Chemistry: Organic Chemistry, Space: Exploration

Return to the site home page

     (via sciencedaily.com) 

Theoretical chemists have developed a theory that can predict the threshold at which quantum dynamics switches from 'orderly' to 'random,' as shown through research using large-scale computations on photosynthesis models.

     (via sciencedaily.com) 

When seen from space, Earth's hemispheres -- northern and southern -- appear equally bright. For years, the brightness symmetry between hemispheres remained a mystery. In a new study, researchers reveal a strong correlation between storm intensity, cloudiness and the solar energy reflection rate in each hemisphere. They offer a solution to the mystery, alongside an assessment of how climate change might alter the reflection rate in the future.

     (via sciencedaily.com) 

Researchers create a network of interacting proteins -- or interactome -- to aid drug discovery.

     (via sciencedaily.com) 

RNAs can wreak havoc on cells if they aren't removed at the right time. Dis3L2 is a molecular 'machine' that untangles and chews up RNAs, but scientists have been unable to explain how. Biochemists have now pieced together the answer. By shape-shifting, the machine unsheathes a lethal wedge that pries open and chews up RNA molecules, a behavior previously unseen.

     (via sciencedaily.com) 

Scientists recently announced the invention of a nanowire 10,000 times thinner than a human hair that can be cheaply grown by common bacteria and tuned to 'smell' a vast array of chemical tracers -- including those given off by people afflicted with a wide range of medical conditions, such as asthma and kidney disease. Thousands of these specially tuned wires, each sniffing out a different chemical, can be layered onto tiny, wearable sensors, allowing healthcare providers an unprecedented tool for monitoring potential health complications. Since these wires are grown by bacteria, they are organic, biodegradable and far greener than any inorganic nanowire.

     (via sciencedaily.com) 

Astronomers have discovered an unusual planetary system in which a large gas giant planet orbits a small red dwarf star called TOI-5205. Their findings challenge long-held ideas about planet formation.

     (via sciencedaily.com) 

Scientists have used machine learning to create brand-new enzymes, which are proteins that accelerate chemical reactions. This is an important step in the field of protein design as new enzymes could have many uses across medicine and industrial manufacturing. The research team devised deep-learning, artificial intelligence algorithms that created light-emitting enzymes called luciferases. Laboratory testing confirmed that the new enzymes can recognize specific chemicals and emit light very efficiently.

     (via sciencedaily.com) 

Researchers have developed principles and technologies of nanofluidic devices to freely manipulate nanomaterials, biomaterials, and molecules at the single-molecule level using fundamental technologies such as nanofluidic processing, functional integration, and fluidic control and measurement, which has pioneered the way to integrate various fields under nanofluidics. To elucidate the single molecule dynamics of chemical reactions in solution, using their unique nanofluidic devices, they outlined how they propose to solve problems such as precisely manipulating small molecules in solution and how to investigate extremely quick reactions, that only take nano- to picoseconds.

     (via sciencedaily.com) 

A team of international researchers have identified six candidate galaxies that existed roughly 500 to 700 million years after the Big Bang and are about as big as the modern Milky Way Galaxy -- a feat that scientists didn't think was possible.

     (via sciencedaily.com) 

The redox regulation mechanism responsible for efficient production of ATP under varying light conditions in photosynthetic organisms has now been unveiled. Researchers investigated the enzyme responsible for this mechanism and uncovered how the amino acid sequences present in the enzyme regulate ATP production. Their findings provide valuable insights into the process of photosynthesis and the ability to adapt to changing metabolic conditions.

     (via sciencedaily.com) 

Current state-of-the-art instrumentation being sent to Mars to collect and analyze evidence of life might not be sensitive enough to make accurate assessments, according to new research.

     (via sciencedaily.com) 

A solar radio burst with a signal pattern, akin to that of a heartbeat, has been pinpointed in the Sun's atmosphere, according to a new study. An international team of researchers has reported uncovering the source location of a radio signal coming from within a C-class solar flare more than 5,000 kilometers above the Sun's surface.

     (via sciencedaily.com) 

On-chip distributed radiation sensors and current-sharing techniques can be used to reduce the impact of radiation on the radio and power consumption of small satellites, respectively. New findings can be used to make small satellites more robust, which can increase the connectivity of networks across the globe.

     (via sciencedaily.com) 

A new study brings this vision closer to reality. The researchers unveil a computational method for designing thousands of different active enzymes with unprecedented efficiency by assembling them from engineered modular building blocks.

     (via sciencedaily.com)     Original source 

An international team has found two new crystal structures for salty ice, or solid hydrate made from water and sodium chloride. The newly discovered material's properties match those of the substance seen on the surface of icy moons, like Europa and Ganymede, and may offer clues to their icy oceans.

     (via sciencedaily.com)     Original source 

Scientists have found how the human brain changes and adapts to weightlessness, after being in space for 6 months. Some of the changes turned out to be lasting -- even after 8 months back on Earth.

     (via sciencedaily.com)     Original source 

New observations have brought to light that stars can form through the dynamic interaction of gas within interstellar gas clouds. This process unfolds faster than previously assumed, research within the FEEDBACK programme on board the flying observatory SOFIA revealed.

     (via sciencedaily.com)     Original source 

A peculiar cloud of gas, nicknamed the Tadpole due to its shape, appears to be revolving around a space devoid of any bright objects. This suggests that the Tadpole is orbiting a dark object, most likely a black hole 100,000 times more massive than the Sun. Future observations will help determine what is responsible for the shape and motion of the Tadpole.

     (via sciencedaily.com) 

Scientists have figured out a way to engineer wood to trap carbon dioxide through a potentially scalable, energy-efficient process that also makes the material stronger for use in construction.

     (via sciencedaily.com)     Original source 

If you want to build a habitable planet, ice is a key ingredient. The ice can be found in enormous clouds in the Universe and it is the main carrier of the necessary elements such as carbon, hydrogen, oxygen, nitrogen and sulphur. These elements are part of the atmosphere around planets and part of molecules like sugar, alcohols and simple amino acids as well. The new James Webb Space Telescope (JWST) has contributed to the discovery of different ices in a molecular cloud, 'Chameleon 1' -- one of the coldest and darkest regions to have ever been explored. Astronomers assume that these types of molecules were also present in the cold cloud of gas and dust forming our own solar system.