- ScienceDaily
- 20/7/6 23:34
Researchers studied double-strand breaks with complex damage and found that enzyme tools to resect the breaks are highly specific to the type of break to be repaired.
Researchers studied double-strand breaks with complex damage and found that enzyme tools to resect the breaks are highly specific to the type of break to be repaired.
New research suggests that people's ideal partner preferences do not reflect any unique personal insight.
Scientists have developed a novel instrument that can make three kinds of atom-scale measurements simultaneously.
A research team recently demonstrated active manipulation of chromatic dispersion, achieving achromatic focusing within a designated broadband.
Researchers have created a new liquid battery with components that can remain molten at room temperature. Other liquid batteries must be kept at 240 degrees Celsius for their components to stay molten.
There's a fairly large flaw in the way that programmers are currently addressing ethical concerns related to artificial intelligence and autonomous vehicles (AVs). Namely, existing approaches don't account for the fact that people might try to use AVs to do something bad.
Researchers have taken a major step toward a theoretical first-principles description of neutrinoless double-beta decay. Observing this yet-unconfirmed rare nuclear process would have important implications for particle physics and cosmology. Theoretical simulations are essential to planning and evaluating proposed experiments.
What makes ships mysteriously slow down or even stop as they travel, even though their engines are working properly? This was first observed in 1893 and was described experimentally in 1904 without all the secrets of this ''dead water'' being understood. A team has explained this phenomenon for the first time.
Dinosaurs and pterosaurs may be known for their remarkable size, but a newly described species that lived around 237 million years ago suggests that they originated from extremely small ancestors. The fossil reptile, named Kongonaphon kely, or 'tiny bug slayer,' would have stood just 10 centimeters tall. The study may help explain the origins of flight in pterosaurs, the presence of 'fuzz' on both...
A new study provides first direct evidence for Gulf Stream blender effect, identifying a new mechanism of mixing water across the swift-moving current. The results have important implications for weather, climate and fisheries because ocean mixing plays a critical role in these processes. The Gulf Stream is one of the largest drivers of climate and biological productivity from Florida to...
Researchers often study the genomes of individual organisms to try to tease out the relationship between genes and behavior. A new study of Africanized honey bees reveals, however, that the genetic inheritance of individual bees has little influence on their propensity for aggression. Instead, the genomic traits of the hive as a whole are strongly associated with how fiercely its soldiers attack.
In a study of New York state apple orchards, plant pathologists have identified a new fungal pathogen that causes bitter rot disease in apples.
Motherhood takes over the brain's decision-making regions to prioritize caring for offspring, according to new research.
Archaeologists have combined the latest scientific methods to offer new insights into life during the Norman Conquest of England. Until now, the story of the Conquest has primarily been told from evidence of the elite classes of the time. But little has been known about how it affected everyday people's lives.
Researchers have developed a new silicon chip with major applications in lidar systems for self-driving cars and smart phones.
Layered van der Waals materials are of high interest for electronic and photonic applications, according to researchers who provide new insights into the interactions of layered materials with laser and electron beams.
Tiny eye movements can be used as an index of humans' ability to anticipate relevant information in the environment independent of the information's sensory modality.
Researchers have discovered a new class of pipeline drugs to relieve pain and reduce fever without the danger of addiction or damage to the liver or kidneys.
Frailty and immune decline are two main features of old age. Researchers now demonstrate in an animal model that these two age-related impairments can be halted and even partially reversed using a novel cell-based therapeutic approach.
In an effort to improve large touchscreens, LED light panels and window-mounted infrared solar cells, researchers have made plastic conductive while also making it more transparent.
A new analysis of white dwarf stars supports their role as a key source of carbon in galaxies. Every carbon atom in the universe was created by stars, but astrophysicists still debate which types of stars are the primary source of the carbon in our galaxy. Some studies favor low-mass stars that blew off their envelopes in stellar winds and became white dwarfs, while others favor massive stars that...
Life as we know it could not exist without Earth's magnetic field and its ability to deflect dangerous ionizing particles. It is continuously generated by the motion of liquid iron in Earth's outer core, a phenomenon called the geodynamo. Despite its fundamental importance, many questions remain unanswered about the geodynamo's origin. New work examines how the presence of lighter elements in the...
The active agents of many drugs are natural products, so called because often only microorganisms are able to produce the complex structures. Similar to the production line in a factory, large enzyme complexes put these active agent molecules together. Biologists have now succeeded in investigating the basic mechanisms of one of these molecular factories.
The brain has a high energy demand and reacts very sensitively to oxygen deficiency. Neurobiologists have now succeeded for the first time in directly correlating oxygen consumption with the activity of certain nerve cells.
Liquid droplets formed from DNA display a peculiar response to enzymes. An international collaboration has now been able to explain the mechanisms behind bubble formation.
The program could make it easier to identify the deadly antimicrobial resistant bacteria that exist in the environment. Such superbugs annually cause more than 2.8 million difficult-to-treat pneumonia or bloodstream infections and 35,000 deaths in the US.
Consider this scenario: A vaccine for the novel coronavirus has been developed that is 91.27% effective. If public health officials present this information using the specific number, people are likely to think the vaccine is actually less effective than if it is presented as being 90% effective. This concept is a real-life application of recent findings from Gaurav Jain, an assistant professor of...
Components made of glass- and carbon- fiber reinforced composites, soaring in high-performance applications, can be 3D printed. A team of researchers has found that the printer head toolpaths are easy to reproduce -- and therefore steal -- with machine learning (ML) tools applied to the microstructures of the part obtained by a CT scan.
In a surprise twist, a major group of flowering plants is evolving twice as quickly in temperate zones as the tropics.
New research identifies several existing compounds that block replication of the COVID-19 virus (SARS-CoV-2) within human cells grown in the laboratory. The inhibitors all demonstrated potent chemical and structural interactions with a viral protein critical to the virus's ability to proliferate.
The first comprehensive worldwide assessment of heatwaves down to regional levels has revealed that in nearly every part of the world heatwaves have been increasing in frequency and duration since the 1950's. The research has also produced a new metric, cumulative heat, which reveals exactly how much heat is packed into individual heatwaves and heatwave seasons. As expected, that number is also on...
Researchers have discovered a protein that drives the progression of esophageal cancer and liver cancer and it could be a promising target for cancer drug development.
Without stem cells, human life would not exist. Due to them, a lump of cells becomes an organ, and a fertilized egg develops into a baby. But what actually makes a stem cell? Are these a stable population of specially gifted cells? Scientists discovered that instead, stem cells might emerge due to the collective behavior of cells within the organs.
An international team of experts on heart disease and diet say there's no evidence that a low-saturated fat diet reduces cholesterol in people with familial hypercholesterolemia.
Cell reprogramming provides an outstanding opportunity for the artificial generation of stem cells for regenerative medicine approaches in the clinic. As current cell reprogramming methods are low in efficiency, researchers around the globe aim to learn lessons from the early embryo which might lead them to a more efficient and faster generation of high-quality, fully reprogrammed stem cells.
Researchers have developed a human cell 'membrane on a chip' that allows continuous monitoring of how drugs and infectious agents interact with our cells, and may soon be used to test potential drug candidates for COVID-19.
A new study demonstrates that even when temperatures warm and cold stress is limited, light is still a major factor in limiting carbon uptake of northern high latitudes. The team analyzed satellite observations, field measurements, and model simulations and showed that there is a prevalent radiation limitation on carbon uptake in northern ecosystems, especially in autumn.
Coconut oil production may be more damaging to the environment than palm oil, researchers say.
National and regional policies aimed at addressing pollution fueled by nitrogen lag behind scientific knowledge of the problem.
250 years ago, over one-fifth of Londoners had contracted syphilis by their 35th birthday, historians have calculated.
Scientists studying the 'near threatened' tequila bat, best known for its role in pollinating the Blue Agave plant from which the drink of the same name is made from, have analyzed its DNA to help inform conservationists on managing their populations.
Researchers have found that dogs adapt their communicative strategies to their environment and that owner behavior influences communicative effort and success. Experimental results found no evidence that dogs rely on communication history or follow the principle of least effort and suggest that owner behavior has a bigger impact on canine communication than previously thought.
Optical amplifiers based on chirped pulse amplification (CPA) are used to generate high intensity pulses. In the CPA scheme, a weak temporally stretched seed pulse is amplified to high energy in a laser amplifier and finally re-compressed resulting in an ultrashort pulse of very high intensity.
Researchers have further refined the use of deep brain stimulation in the treatment of obsessive-compulsive disorder. By accurately localizing electrode placement in the brains of patients, the researchers were able to identify a fiber tract which is associated with the best clinical outcomes following deep brain stimulation.
Scientists have recently shown that a multitude of high-dimensional synthetic lattices naturally emerge in (abstract) photon-number space when a multiport photonic lattice is excited by N indistinguishable photons.