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With the arrival of AI-generated art and the proliferation of tools like Midjourney, Stable Diffusion and DALL-E, questions have been rife in circles across the creative industry.
Is this a temporary trend? Or a would-be essential tool in creative communication?
Seizures come suddenly, triggered by stress, fever, flashing lights, or even just feeling tired. Some cause the body to jerk and shake while others can produce strange sensations, make one lose a sense of awareness, or faint. They can happen when the person is awake or asleep. When they pass, after a few seconds or minutes, they leave people tired, confused, and disoriented.
The brain usually maintains a certain level of inhibition that keeps neurons from firing uncontrollably. But during a seizure, one part of the brain starts firing too frantically and can’t stop, resulting in a spike of electrical activity and a seizure.
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The laws of physics do not exist, a theoretical physicist named Sankar Das Sarma argues in a new column published by New Scientist. While we define the laws as the “ultimate laws” of our universe, Sarma says they are merely working descriptions, and that they are nothing more than mathematical equations that match with parts of nature.
Quantum entanglement is a process through which two particles become entangled and remain connected over time, even when separated by large distances. Detecting this phenomenon is of crucial importance for both the development of quantum technology and the study of quantum many-body physics.
Researchers at Tsinghua have recently carried out a study exploring the possible reasons why the reliable and efficient detection of entanglement in complex and “noisy” systems has often proved to be very challenging. Their findings, published in Physical Review Letters, hint at the existence of a trade-off between the effectiveness and efficiency of entanglement detection methods.
“Over 20 years ago, researchers discovered that most quantum states are entangled,” Xiongfeng Ma, one of the researchers who carried out the study, told Phys.org.
Two planets that astronomers discovered on the Kepler mission may not be the rocky, Earth-like bodies that we originally believed. Instead, a new study suggests that they could be two water worlds, and that they are less dense than astronomers originally posited. What’s intriguing about these worlds is that they are believed to be somewhat similar to Europa, which is a rocky core encased in water and capped in ice.
The cloud condensation nuclei activation of sea spray aerosol (SSA) is tightly linked to the hygroscopic properties of these particles and is defined by their physical and chemical properties. While hygroscopic sea salt in SSA strongly influences particle water uptake, the marine-derived components that make up the organic fraction of SSA constitute a complex mixture, and their effect on hygroscopic growth is unknown. To constrain the effect of organic compounds and specifically surface-active compounds that adsorb on particle interfaces, particle hygroscopic growth studies were performed on laboratory-generated model sea salt/sugar particles. For sea salt/glucose particles, ionic surfactants facilitated water uptake at low relative humidity (RH), increasing the particle growth factor (GF) by up to 7.61%, and caused a reduction in the deliquescence relative humidity (DRH), while nonionic surfactants had a minimal effect. Replacing glucose with polysaccharide laminarin in sea salt/sugar/surfactant particles caused a reduction in GF at low RHs and minimized the effect of ionic surfactants on the DRH. At RHs above the DRH, the addition of anionic or nonionic surfactants caused a decrease in GF for both sea salt/glucose and sea salt/laminarin particles. The addition of cationic surfactants, however, did not have a dampening effect on water uptake of sea salt/sugar particles and even showed a GF increase of up to 3.7% at 90% RH. An increase in the complexity of the sugar dampens the water uptake for particles containing nonionic surfactants but increases the water uptake for cationic surfactants. The cloud activation potential for 100 nm particles analyzed in this study is higher for ionic surfactants and decreases with an increase in surfactant molecular size when particle interfacial tension is considered. The surfactant effect on the hygroscopic growth and cloud activation potential of the particles containing sea salt/sugar is dependent on the surfactant ionicity and molecular size, the particle size and interfacial tension, and the interactions between inorganic salt and organic species under different RH conditions.
Summary: Findings support the theory that microRNAs are essential for the development and evolution of intelligent life.
Source: Dartmouth College.
Octopuses have captured the attention of scientists and the public with their remarkable intelligence, including the use of tools, engaging in creative play and problem-solving, and even escaping from aquariums.
The past and the future are tightly linked in conventional quantum mechanics. Perhaps too tightly. A tweak to the theory could let quantum possibilities increase as space expands.
New therapeutic has the potential to treat inflammatory bowel disease by targeting a molecule that keeps order in the intestines.
Salk Institute scientists have developed a new drug that acts like a master reset switch in the gut. Called FexD, the compound has previously been found to burn fat, lower cholesterol, and ward off colorectal cancer in mice. Now, the team reports that FexD can also prevent and reverse intestinal inflammation in mouse models of inflammatory bowel disease. The study was published on December 12, 2022, in the journal Proceedings of the National Academy of Sciences.
“The Salk-developed drug FexD provides a new way to restore balance to the digestive system and treat inflammatory diseases that are currently very difficult to manage,” says Salk Professor Ronald Evans, senior author of the study. Evans is also director of Salk’s Gene Expression Laboratory and March of Dimes Chair in Molecular and Developmental Biology.
