Newsworthy Science

Women held keys to land and wealth in Celtic Britain​

Women in Britain 2,000 years ago appear to have passed on land and wealth to daughters not sons as communities were built around women's blood lines, according to new research.

Skeletons unearthed in Dorset contained DNA evidence that Celtic men moved to live with their wives' families and communities.

Scientists found evidence of a whole community built around the female line of a family over generations, probably originating with one woman.

"This points to an Iron Age society in Britain where women wielded quite a lot of influence and could shape its trajectory in many ways," says Dr Lara Cassidy at Trinity College, Dublin, lead author of the research.

It is the first time this evidence of communities being built around women has been documented in ancient European history.

The scientists believe that the communities also invested a lot in their daughters as they would probably inherit their mother's status.

"It's relatively rare in modern societies, but this might not always have been the case," says Dr Cassidy.

The team found evidence that it happened in numerous places in Britain, suggesting it was widespread.

The communities analysed lived around the same time as Boudica, the warrior Queen who led a rebellion against Roman invaders in East Anglia around AD 61.

Dr Cassidy sequenced DNA taken from the bones of 57 individuals from a tribe called the Durotriges. The people lived in Winterborne Kingston, Dorset around 100 BC to AD 100.

The skeletons were dug up from a cemetery by a team of archaeologists at Bournemouth University.

By tracing mitochondrial DNA, which is only passed on by women, Dr Cassidy found that most women in the community were related by blood dating back generations.

By contrast, there was a lot of diversity in the Y chromosomes, which is passed from father to son, indicating that men from lots of different families married into the community.

The DNA analysis also indicates that most of the ancestral line could be traced back to a single woman.

The work indicates that this society was what is known as matrilocal - meaning that a married man moved to live in his wife's community.

"The most sort of obvious benefit to a woman is that if you don't leave home, you don't leave your support network. Your parents, siblings, family members are all still around you," says Dr Cassidy.

"It's your husband who's coming in, he's the relative stranger to the community, and he's dependent on your family for his livelihood and land," she adds.

The researchers found the same matrilocality evidence in bones from other cemeteries including in Cornwall and Yorkshire.

She says that evidence of powerful women in ancient communities has often been dismissed an a one-off, not the norm, but these findings challenge that thinking.

Archaeologists Prof Miles Russell and Prof Martin Smith found other evidence that women had high status.

"We find quite elaborately furnished graves with high status objects of wealth. Every time we find that, it occurs in women's graves, so we think wealth was being transferred down the female line," says Prof Martin Smith at Bournemouth university.

The findings also back up Roman writings at the time which suggested that women in Britain were quite powerful, more so than in Rome.

But Romans like Julius Caeser viewed that as a sign of backwardness.

"Women in Britain had power and it was a more egalitarian place. That was the biggest problem that Romans had with the Britons because Rome was a deeply patriarchal society. To them, it marked Britons as the ultimate Barbarians," says Professor Miles Russell at Bournemouth University.

The majority of societies today are patrilocal, meaning women move to their husband's communities.

But some matrilocal communities exist today or in the recent past, including the Akans in Ghana, West Africa and Cherokee in North America.

The scientists say that Iron Age Britain may have been matrilocal because men were frequently away fighting.

Dr Cassidy compares it to World War Two when women gained more political and economic power.

Matrilocal societies are also less likely to experience internal conflict, she says.

"It can promote feelings of unity among neighbouring communities and villages. It disperses groups of related males, stopping groups of related males developing strong loyalties and starting feuds with the related males nearby," she suggests.

The findings are published in the scientific journal Nature.
https://www.bbc.com/news/articles/c20g7j707g8o
 
We cannot embed webm files, so you shall have to click on it, but I think this 10 second video is amazing. It shows to me how mitochondria can really be thought of as a symbiotic inter-cellular organism.

Powerhouses of the cell. This video of a human bone-cancer cell shows its three nuclei (blue —probably the result of failed cell divisions), actin cytoskeleton (red) and a network of moving mitochondria (yellow). It was captured using a confocal microscope by cell biologist Dylan Burnette at Vanderbilt University in Nashville, Tennessee. Burnette says that mitochondria often move around the cell and interact with other structures, and that they exist in a mixture of forms. “The common perception of mitochondria as bean-shaped likely stems from textbook and cartoon depictions,” he says, which are in turn based on microscope images of thin slices through them. “These two-dimensional views do not fully capture the complex and dynamic mitochondrial networks present in most cells.”

https://www.nature.com/immersive/d4...s/4JsOv5ttJO/mito-h2b-vasp-rgb-1024x1024.webm
 
How to cook eggs with science

TL/DR:

- Have one pan of boiling water at 100 C
- Have one pan of water at 30 C
- Move the egg from one pan to the other every two minutes, for 32 minutes (eight cycles in total)

Egg cooks are challenged by the two-phase structure: albumen and yolk require two cooking temperatures. Separation or a compromise temperature to the detriment of food safety or taste preference are the options. In the present article, we find that it is possible to cook albumen and yolk at two temperatures without separation by using periodic boundary conditions in the energy transport problem. Through mathematical modeling and subsequent simulation, we are able to design the novel cooking method, namely periodic cooking. Comparison with established egg cooking procedures through a plethora of characterization techniques, including Sensory Analysis, Texture Profile Analysis and FT-IR spectroscopy, confirms the different cooking extents and the different variations in protein denaturation with the novel approach. The method not only optimizes egg texture and nutrients, but also holds promise for innovative culinary applications and materials treatment.

Simulation of periodic cooking

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Results of the simulation of the cooking of an egg with the periodic cooking method: a periodic time-varying BC imposed, b evolution of the thermal profile over time, c evolution of the degree of cooking over time at different distances from the center of the egg and d evolution of the cooking rate over time at different distances from the center of the egg. The distances from the center selected to construct the graphs of figures c and d are identified by the lines in figure b. The precise legend for figures c and d is given only in figure d.

Sensory analysis evaluation

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a Photographs of the raw, hard-boiled (red), soft-boiled (yellow), sous vide (green) and periodic (blue) eggs. Results of the Sensory Analysis performed on b albumen and c yolk. Significant differences (p = 95%) are identified between: hard-boiled and periodic yolk (in Astringency, Softness, Wetness, Meltability, Sweetness and Umami); soft-boiled and periodic yolk (in Shininess, Wetness and Sweetness); sous vide and periodic yolk (in Shininess, White color, Softness, Wetness and Meltability); hard-boiled and periodic albumen (in Shininess, Orange color, Density/body, Wetness, Solubility, Pastiness, Adhesiveness, Powderiness, Sweetness and Umami); soft-boiled and periodic albumen (in Density/Body, Wetness, Sweetness and Saltiness). No significant differences are found between sous vide and periodic yolk.

Paper
 
:lol:
 
Yes the periodic process is way to long and complicated for insignificant results differences.
 
This is far outside anything I really know about, but a form of carbon that can take insulating or superconducting properties sounds like it could be the next big thing in electronics.

‘Unconventional’ superconductivity probed in twisted graphene

A superconducting state can be induced in a twisted carbon-based material, but it can’t be described with conventional theory. A technique using high-frequency circuits could reveal the mechanism behind this fascinating state.

When layers of the carbon-based material graphene are stacked together and twisted relative to each other at special angles, their electrons behave as if they have very large masses, slowing them to a near standstill. Depending on the density of the electrons, this leads to one of two states. The electrons either repel each other strongly, yielding an electrically insulating state, or they pair up to form a superconducting state — one in which electrical resistance becomes zero. But the nature of this superconductivity is puzzling and it’s not known exactly why the electrons pair up. In two papers in Nature, Tanaka et al. and Banerjee et al. investigate superconductivity in twisted graphene using circuits that can detect subtle properties of these electron pairs.

Nature discussion (paywalled)
Superfluid stiffness of magic-angle twisted bilayer graphene
Superfluid stiffness of twisted trilayer graphene superconductors
 
Such "woke" electrons that can be twisted into states that do not conform with conservative principles of stability should be banned. Stop all funding for such bigly terrible research.
 
Record-breaking neutrino is most energetic ever detected

Astrophysicists have observed the most energetic neutrino ever. The particle — which probably came from a distant galaxy — was spotted by the Cubic Kilometre Neutrino Telescope (KM3NeT), a collection of light-detecting glass spheres on the floor of the Mediterranean Sea, on 13 February 2023. Researchers monitoring the telescope did not notice the detection until early 2024, when they completed the first analysis of their data. They unveiled it as a potentially record event last year at a conference in Milan, Italy, but did not disclose details such as the timing, direction or energy of the neutrino.

“We had to convince ourselves that it wasn’t something strange or weird with the telescope,” says Paschal Coyle, a neutrino physicist at Aix-Marseille University in France and KM3NeT spokesperson. The result was published on 12 February in Nature, and will be described in four preprints due to be posted on the arXiv preprint server.

High-energy neutrinos

Neutrinos are electrically neutral particles more than one million times lighter than an electron. They are typically produced in nuclear reactions such as those at the centre of the Sun, from which they emerge with energies on the order of millions of electronvolts (10^6 eV). But for more than 10 years, researchers have been recording neutrinos carrying unprecedented energies of up to several quadrillion electronvolts (10^15 eV, or 1 petaelectronvolt), which are thought to originate in distant galaxies. (The most energetic particle ever detected, at 320,000 PeV, was not a neutrino but a cosmic ray dubbed the Oh-My-God particle.)

KM3NeT consists of strings of sensitive light detectors anchored to the sea floor at a depth of around 3,500 metres off the coast of the Italian island of Sicily, as well as in a second, smaller array near Toulon, France. These sensors pick up light emitted by high-energy, electrically charged particles such as muons. Muons are continuously raining down on Earth’s surface, because they are produced when cosmic rays hit air molecules. But occasionally, a cosmic neutrino that smashes into the planet’s surface also produces a muon.

In the February 2023 event detected by the Sicily observatory, the team estimated that the muon carried 120 PeV of energy, on the basis of the unusual amount of light it produced. The particle’s path was close to horizontal with respect to Earth’s surface and travelled eastwards, towards Greece.

In light of its enormous energy and near-horizontal direction, the muon most probably originated from the interaction of a neutrino of even higher energy in the vicinity of the detector. The cosmic neutrino energy spectrum measured up to now falls steeply with energy. However, the energy of this event is much larger than that of any neutrino detected so far. This suggests that the neutrino may have originated in a different cosmic accelerator than the lower-energy neutrinos, or this may be the first detection of a cosmogenic neutrino, resulting from the interactions of ultra-high-energy cosmic rays with background photons in the Universe.


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Source
Preprint Paper
 
Sea turtles use magnetic ‘map’ and ‘compass’ to navigate the ocean

Loggerhead sea turtles (Caretta caretta) can learn to associate food with the geomagnetic signatures of various oceanic regions, suggesting that they are able to find known foraging areas using an internal magnetic ‘map’. This map and an internal magnetic ‘compass’ rely on distinct mechanisms, implying that turtles have two magnetic senses.

Growing evidence indicates that migratory animals exploit the magnetic field of the Earth for navigation, both as a compass to determine direction and as a map to determine geographical position. It has long been proposed that, to navigate using a magnetic map, animals must learn the magnetic coordinates of the destination, yet the pivotal hypothesis that animals can learn magnetic signatures of geographical areas has, to our knowledge, yet to be tested. Here we report that an iconic navigating species, the loggerhead turtle (Caretta caretta), can learn such information. When fed repeatedly in magnetic fields replicating those that exist in particular oceanic locations, juvenile turtles learned to distinguish magnetic fields in which they encountered food from magnetic fields that exist elsewhere, an ability that might underlie foraging site fidelity. Conditioned responses in this new magnetic map assay were unaffected by radiofrequency oscillating magnetic fields, a treatment expected to disrupt radical-pair-based chemical magnetoreception, suggesting that the magnetic map sense of the turtle does not rely on this mechanism. By contrast, orientation behaviour that required use of the magnetic compass was disrupted by radiofrequency oscillating magnetic fields. The findings provide evidence that two different mechanisms of magnetoreception underlie the magnetic map and magnetic compass in sea turtles.

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Europe's not out of the race for fusion yet!:nuke:

Nuclear fusion: WEST beats the world record for plasma duration!​

Nuclear fusion: WEST beats the world record for plasma duration!​



photo-plasma.jpg
© CEA

On 12 February, the CEA’s WEST machine was able to maintain a plasma for more than 22 minutes. In doing so, it smashed the previous record for plasma duration achieved with a tokamak. This leap forward demonstrates how our knowledge of plasmas and technological control of them over longer periods is becoming more mature, and offers hope that fusion plasmas can be stabilised for greater amounts of time in machines such as ITER.

1,337 seconds: that was how long WEST, a tokamak run from the CEA Cadarache site in southern France and one of the EUROfusion consortium medium size Tokamak facilities, was able to maintain a plasma for on 12 February. This was a 25% improvement on the previous record time achieved with EAST, in China, a few weeks previously.

The plasma record reached a temperature of 50 million degrees.


The plasma record reached a temperature of 50 million degrees. © CEA


Reaching durations such as these is a crucial milestone for machines like Iter, which will need to maintain fusion plasmas for several minutes. The end goal is to control the plasma, which is naturally unstable, while ensuring that all plasma-facing components are able to withstand its radiation without malfunctioning or polluting it.

WEST, the tokamak run by the CEA


WEST, the tokamak run by the CEA © L. Godart/CEA


This is what CEA researchers intend to achieve and what explains the current record. Over the coming months, the WEST team will double down on its efforts to achieve very long plasma durations – up to several hours combined – but also to heat the plasma to even higher temperatures with a view to approaching the conditions expected in fusion plasmas.

WEST is a CEA facility that benefits from the commission’s decades of experience in the use of tokamaks to study plasmas. It welcomes researchers from around the world, who make use of its key characteristics that allow long-duration plasmas, particularly its superconducting coils and actively cooled components. WEST is one facet of an international movement comprising other major experiments in which CEA researchers are heavily involved, such as JET, the Joint European Torus tokamak in the United Kingdom (closed in late 2023), which holds the record for fusion energy, JT-60SA in Japan, EAST in China, and KSTAR in South Korea, not to mention the flagship machine that is ITER.

“WEST has achieved a new key technological milestone by maintaining hydrogen plasma for more than twenty minutes through the injection of 2 MW of heating power. Experiments will continue with increased power. This excellent result allows both WEST and the French community to lead the way for the future use of ITER.”, comment Anne-Isabelle Etienvre, Director of Fundamental Research at the CEA.

What is fusion used for?​

Nuclear fusion is a technology with the ultimate goal of controlling naturally unstable plasma. It uses even fewer resources and less fuel than fission, which was already very concentrated, and does not produce long-lived radioactive waste.

Of the various possible techniques for generating energy, the most advanced is magnetic confinement fusion , where plasma is held in a torus by an intense magnetic field and heated until the hydrogen nuclei fuse. Confinement fusion has been shown by JET to produce fusion power of 15 MW for several seconds.

France, home to both WEST and ITER, is well-placed to house the first prototype nuclear fusion reactor. Nuclear fusion is a source of energy that exploits nuclear reactions, with many possible complementary aspects with nuclear fission energy and associated techniques relating to neutrons and matter, which are well understood.

Nevertheless, given the infrastructure needed to produce this energy on a large scale, it is unlikely that fusion technology will make a significant contribution to achieving net-zero carbon emissions by 2050. For this, several technological sticking points need to be overcome, and the economic feasibility of this form of energy production must still be demonstrated.
 

Researchers have managed to produce transparent aluminium​

Philippine researchers have developed a system to produce transparent aluminium. Tiny drops of acid transform the metal into a glass-like material, reducing chemical waste and energy consumption.

Transparent aluminum illustration

Transparent aluminium could have world-changing applications​

This new system could make transparent aluminium more cost-effective and accessible for applications ranging from touchscreens and lenses to ultra-strong coatings for vehicles and buildings.

Transparent aluminium oxide (TAlOx), despite its futuristic name, is a real material known for its hardness and scratch resistance.

These properties make it ideal for protective coatings on electronic devices, optical sensors and solar panels.

In the science fiction series Star Trek, it is even used for spaceship windows and aquariums in space.



Current methods for producing TAlOx are expensive and complex, as they require high-powered lasers, vacuum chambers or large amounts of dangerous acids. However, this situation may change thanks to research conducted by Filipino scientists at the Ateneo de Manila University.

Instead of submerging entire sheets of metal in acidic solutions, the researchers applied microdroplets of acidic solution to small aluminium surfaces and then applied an electric current.

Amazingly, it took just two volts of electricity—slightly more than the power in a household AA flashlight battery—to transform the metal into glass-like TAlOx.



This process, called “droplet-scale anodizing,” is not only simpler than existing manufacturing methods, but it is also more environmentally friendly, reducing chemical waste and energy consumption .

The technique is based on a special effect called Electro-wetting , where an electric field alters the properties of a drop of liquid, allowing precise control over the anodizing process.



This new approach could make TAlOx more cost-effective and accessible for applications ranging from touchscreens and lenses to ultra-tough coatings for vehicles and buildings. Additionally, it could drive advances in the miniaturization of electronic devices, as scientists now have a method for converting metal surfaces into insulating, transparent layers at the microscopic scale.

The results of this study were published in the journal Langmuir .
So Scotty visited these guys instead!:undecide:
from memory alpha

"Meanwhile, at Plexicorp, after the tour, Scott tells Nichols that they have a very fine plant here and Nichols compliments Scott's impressive knowledge of engineering skill. Scott then says he sees Nichols still working with polymers. Nichols asks what else he'd be using. Scott asks how big a piece of the plexiglass need to be at the measurements they'll need for the Bounty's cargo bay, holding the pressure of the water that will be inside. Nichols says that a six inch piece would do it. Scott then supposes he shows Nichols a way to make a wall that would do the same thing but only be one inch thick. At first Nichols thinks Scott is joking but McCoy suggest Scott make use of Nichols' computer and he obliges. Although Scott mistakes the old computer for one he can talk to, when Nichols finally tells him to just use the keyboard, Scott does so and quickly comes up with the formula for transparent aluminum. Nichols says it'd take years to work out the dynamics of the matrix, but McCoy tells him he'll be richer than he can dream. When Nichols asks what Scott wants, McCoy excuses them and they go over to the corner. McCoy tells Scott that if they give Nichols the formula, they alter the future. Scott then asks how it is they know Nichols didn't invent transparent aluminum? McCoy agrees to Scott's logic and they go off to make the deal."
 
Only 40 years later than Star Trek, eh? Well, I'd definitely prefer no transparent aluminium to the Eugenics Wars.
 
I could very easily be wrong, but I think this research challenges the Cosmological principle.

My understanding is that we base cosmology, and our picture of life the universe and everything, on the principle that the universe is homogenous and isotropic, ie. is the same everywhere and in all directions if you zoom out enough.

However when we look at the cosmic microwave background it is more blurry if we look in one direction than the other. That means either the universe is different in one direction, or we are in a special place. Or we could be wrong, it is only 3 sigma, about a 1 in 600 chance of seeing something this weird by chance, or perhaps a fault in our theories.

Spoiler Youtube explaination :

Paper
 
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Hmmm....Do we know where in the universe we are located compared to the location of the big bang? I am guessing that in an expanding universe there is a point of beginning from which the universe began?
 
Hmmm....Do we know where in the universe we are located compared to the location of the big bang? I am guessing that in an expanding universe there is a point of beginning from which the universe began?
The big bang happened everywhere. It created space and time.

The further we look away from us the further back in time we go, the same in all directions.

https___blogs-images.forbes.com_startswithabang_files_2016_06_Observable_universe_logarithmic_illustration.png
 
The big bang happened everywhere. It created space and time.

The further we look away from us the further back in time we go, the same in all directions.

https___blogs-images.forbes.com_startswithabang_files_2016_06_Observable_universe_logarithmic_illustration.png
IIRC wasn't there an expansion phase and a continued expansion now? Expansion certainly implies "getting bigger." Now, of course, if the universe is all there is, then the universe has always been "everywhere, all at once" from the beginning even as "everywhere" gets bigger.

 
IIRC wasn't there an expansion phase and a continued expansion now? Expansion certainly implies "getting bigger." Now, of course, if the universe is all there is, then the universe has always been "everywhere, all at once" from the beginning even as "everywhere" gets bigger.

Yeah, it is just that the size of everywhere got bigger quickly for a short while.

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A new woolly mouse will probably not bring back the woolly mammoth

A company that has raised hundreds of millions of dollars in an effort to ‘de-extinct’ woolly mammoths and other animals has claimed a breakthrough in its quest: the creation of hairier mice.

The gene-edited ‘woolly mice’ harbour a mix of mutations modelled on those of woolly mammoths (Mammuthus primigenius), as well as changes known to alter hair growth in mice, Colossal Biosciences announced in a 4 March press release and accompanying preprint.

Colossal, which is based in Dallas, Texas, and worth more than US$10 billion according to its latest valuation, says the woolly mouse represents an important step towards its goal of engineering Asian elephants — the mammoth’s closest living relative — with genetic changes for key mammoth traits. “The Colossal Woolly Mouse marks a watershed moment in our de-extinction mission,” said Ben Lamm, Colossal’s co-founder and chief executive, in the press release.

But some experts in mammoth genetics and genome editing question whether the mice represent a significant advance in either area, let alone a milestone on the way to bringing back woolly mammoths, which last roamed Earth some 4,000 years ago.

“It’s far away from making a mammoth or a ‘mammoth mouse’,” says Stephan Riesenberg, a genome engineer at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany. “It’s just a mouse that has some special genes.”

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Fluffy !!! :love:
 
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