To observe living cells through a microscope, a sample is usually squeezed onto a glass slide. It then lies there calmly and the cells are observable. The disadvantage is that this limits how the cells behave and it only produces two-dimensional images.
Researchers from UiT The Arctic University of Norway and the University Hospital of North Norway (UNN) have now developed what they are referring to as the next generation microscope. The new technology can take pictures of much larger samples than before, while living and working in a more natural environment.
Dogs cry tears of joy when reuniting with their owners.
Pet dogs produce a larger volume of tears when they are reunited with their owners than with acquaintances, possibly because of surging oxytocin levels—findings that could be the first evidence of emotional crying in nonhuman animals.
The stimulations were critical for their learning. Separate experiments with DishBrain without any electrical feedback performed far worse.
Game On
The study is a proof of concept that neurons in a dish can be a sophisticated learning machine, and even exhibit signs of sentience and intelligence, said Kagan. That’s not to say they’re conscious—rather, they have the ability to adapt to a goal when “embodied” into a virtual environment.
Sponsored by Kishore Tipirneni’s new book “A New Eden” available here: https://getbook.at/NewEden | Abiogenesis – origin of life. Living matter from non-living matter. The origin of living organisms from inorganic or non-living material is called abiogenesis. But abiogenesis is not evolution.
Despite the incredible variations of life we see today, at the fundamental level, all living things contain three elements: Nucleic acids, Proteins, and lipids. These three things had to have been present in order for life to start.
The most important component may have been lipids which make up the cell walls because without a way to encapsulate certain elements, they various chemicals could not come together to potentially interact.
Lipids molecules have a unique structure. The round part loves water. The tail part hates water. So it has a tendency to self-assemble into natural spheres. However, when there are certain salt ions present, it destroys the lipid spheres. But RNA and other functions of a cell require salts and other ions. However, researchers at the University of Washington showed that lipid spheres do not disassemble if they are in the presence of amino acids, precursor to protein molecules. So it turns out that lipid cell walls and proteins need each other to exist, in salty water.
Recreates the immune system;…Prolonged fasting forces the body to use stores of glucose, fat and ketones, but it also breaks down a significant portion of white blood cells. Longo likens the effect to lightening a plane of excess cargo. During each cycle of fasting, this depletion of white blood cells induces changes that trigger stem cell-based regeneration of new immune system cells. In particular, prolonged fasting reduced the enzyme PKA, an effect previously discovered by the Longo team to extend longevity in simple organisms and which has been linked in other research to the regulation of stem cell self-renewal and pluripotency — that is, the potential for one cell to develop into many different cell types. Prolonged fasting also lowered levels of IGF-1, a growth-factor hormone that Longo and others have linked to aging, tumor progression and cancer risk.
A simulated version of Paris where universities and telecommunication hubs are connected by a quantum communication network suggests that existing technology is already nearing the ability to create functional “quantum cities”.