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Categories: Archaeology: General, Physics: General

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Archaeology: General
Published

Neolithic groups from the south of the Iberian Peninsula first settled permanently in San Fernando (Cadiz) 6,200 years ago      (via sciencedaily.com)     Original source 

A new study reveals that the first farmers and herdsmen settled in Andalusia collected and consumed shellfish throughout the year, especially in winter.

Offbeat: General Offbeat: Space Physics: General Physics: Quantum Physics Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features
Published

A star like a Matryoshka doll: New theory for gravastars      (via sciencedaily.com)     Original source 

If gravitational condensate stars (or gravastars) actually existed, they would look similar to black holes to a distant observer. Two theoretical physicists have now found a new solution to Albert Einstein's theory of general relativity, according to which gravitational stars could be structured like a Russian matryoshka doll, with one gravastar located inside another.

Anthropology: General Archaeology: General Offbeat: General Offbeat: Paleontology and Archeology
Published

Anthropologists' research unveils early stone plaza in the Andes      (via sciencedaily.com)     Original source 

Located at the Callacpuma archaeological site in the Cajamarca Basin of northern Peru, the plaza is built with large, vertically placed megalithic stones -- a construction method previously unseen in the Andes.

Anthropology: Early Humans Anthropology: General Archaeology: General Biology: General Biology: Zoology Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals
Published

Some Pre-Roman humans were buried with dogs, horses and other animals      (via sciencedaily.com)     Original source 

Some people from an ancient community in what is now northern Italy were interred with animals and animal parts from species such as dogs, horses and pigs. The reasons remain mysterious, but might indicate an enduring companion relationship between these humans and animals, or religious sacrificial practices, according to a new study.

Computer Science: General Computer Science: Quantum Computers Physics: Acoustics and Ultrasound Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Fundamental equation for superconducting quantum bits revised      (via sciencedaily.com)     Original source 

Physicists have uncovered that Josephson tunnel junctions -- the fundamental building blocks of superconducting quantum computers -- are more complex than previously thought. Just like overtones in a musical instrument, harmonics are superimposed on the fundamental mode. As a consequence, corrections may lead to quantum bits that are 2 to 7 times more stable. The researchers support their findings with experimental evidence from multiple laboratories across the globe.

Physics: General
Published

Altermagnetism proves its place on the magnetic family tree      (via sciencedaily.com)     Original source 

There is now a new addition to the magnetic family: researchers have demonstrated the existence of altermagnetism. The experimental discovery of this new branch of magnetism signifies new fundamental physics, with major implications for spintronics.

Chemistry: Biochemistry Energy: Nuclear Physics: General Physics: Quantum Physics
Published

Astronomy observation instrument used to uncover internal structure of atomic nuclei      (via sciencedaily.com)     Original source 

Researchers have used equipment originally intended for astronomy observation to capture transformations in the nuclear structure of atomic nuclei, reports a new study.

Chemistry: General Chemistry: Inorganic Chemistry Offbeat: General Physics: General
Published

Greetings from the island of enhanced stability: The quest for the limit of the periodic table      (via sciencedaily.com)     Original source 

Since the turn of the century, six new chemical elements have been discovered and subsequently added to the periodic table of elements, the very icon of chemistry. These new elements have high atomic numbers up to 118 and are significantly heavier than uranium, the element with the highest atomic number (92) found in larger quantities on Earth. This raises questions such as how many more of these superheavy species are waiting to be discovered, where -- if at all -- is a fundamental limit in the creation of these elements, and what are the characteristics of the so-called island of enhanced stability. In a recent review, experts in theoretical and experimental chemistry and physics of the heaviest elements and their nuclei summarize the major challenges and offer a fresh view on new superheavy elements and the limit of the periodic table.

Chemistry: Biochemistry Engineering: Nanotechnology Physics: General
Published

Scientists study the behaviors of chiral skyrmions in chiral flower-like obstacles      (via sciencedaily.com)     Original source 

Chiral skyrmions are a special type of spin textures in magnetic materials with asymmetric exchange interactions. They can be treated as quasi-particles and carry integer topological charges. Scientists have recently studied the random walk-behaviors of chiral skyrmions by simulating their dynamics within a ferromagnetic layer surrounded by chiral flower-like obstacles. The simulations reveal that the system behaves like a topological sorting device, indicating its use in information processing and computing devices.

Chemistry: Inorganic Chemistry Energy: Technology Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

How electron spectroscopy measures exciton 'holes'      (via sciencedaily.com)     Original source 

Semiconductors are ubiquitous in modern technology, working to either enable or prevent the flow of electricity. In order to understand the potential of two-dimensional semiconductors for future computer and photovoltaic technologies, researchers investigated the bond that builds between the electrons and holes contained in these materials. By using a special method to break up the bond between electrons and holes, they were able to gain a microscopic insight into charge transfer processes across a semiconductor interface.

Chemistry: Biochemistry Chemistry: General Chemistry: Inorganic Chemistry Physics: General Physics: Optics
Published

Molecular manganese complex as superphotooxidant      (via sciencedaily.com)     Original source 

Highly reducing or oxidizing photocatalysts are a fundamental challenge in photochemistry. Only a few transition metal complexes with Earth-abundant metal ions have so far advanced to excited state oxidants, including chromium, iron, and cobalt. All these photocatalysts require high energy light for excitation and their oxidizing power has not yet been fully exploited. Furthermore, precious and hence expensive metals are the decisive ingredients in most cases. A team of researchers has now developed a new molecular system based on the element manganese. Manganese, as opposed to precious metals, is the third most abundant metal after iron and titanium and hence widely available and very cheap.

Chemistry: General Chemistry: Inorganic Chemistry Physics: General
Published

New process allows full recovery of starting materials from tough polymer composites      (via sciencedaily.com)     Original source 

In a win for chemistry, inventors have designed a closed-loop path for synthesizing an exceptionally tough carbon-fiber-reinforced polymer and later recovering all of its starting materials.

Computer Science: Quantum Computers Physics: General Physics: Optics Physics: Quantum Computing Physics: Quantum Physics
Published

Technique could improve the sensitivity of quantum sensing devices      (via sciencedaily.com)     Original source 

A new technique can control a larger number of microscopic defects in a diamond. These defects can be used as qubits for quantum sensing applications, and being able to control a greater number of qubits would improve the sensitivity of such devices.

Chemistry: Inorganic Chemistry Chemistry: Thermodynamics Physics: General Physics: Quantum Physics Space: Astrophysics Space: General
Published

Physicists capture the first sounds of heat 'sloshing' in a superfluid      (via sciencedaily.com)     Original source 

For the first time, physicists have captured direct images of 'second sound,' the movement of heat sloshing back and forth within a superfluid. The results will expand scientists' understanding of heat flow in superconductors and neutron stars.

Chemistry: Biochemistry Computer Science: General Computer Science: Quantum Computers Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Combining materials may support unique superconductivity for quantum computing      (via sciencedaily.com)     Original source 

A new fusion of materials, each with special electrical properties, has all the components required for a unique type of superconductivity that could provide the basis for more robust quantum computing.

Anthropology: Cultures Anthropology: General Archaeology: General Offbeat: General Offbeat: Paleontology and Archeology
Published

Scandinavia's first farmers slaughtered the hunter-gatherer population, study finds      (via sciencedaily.com)     Original source 

Following the arrival of the first farmers in Scandinavia 5,900 years ago, the hunter-gatherer population was wiped out within a few generations, according to a new study. The results, which are contrary to prevailing opinion, are based on DNA analysis of skeletons and teeth found in what is now Denmark.

Chemistry: Biochemistry Chemistry: General Chemistry: Inorganic Chemistry Engineering: Nanotechnology Physics: General Physics: Quantum Computing Physics: Quantum Physics
Published

Structural isomerization of individual molecules using a scanning tunneling microscope probe      (via sciencedaily.com)     Original source 

An international research team has succeeded in controlling the chirality of individual molecules through structural isomerization. The team also succeeded in synthesizing highly reactive diradicals with two unpaired electrons. These achievements were made using a scanning tunneling microscope probe at low temperatures.

Anthropology: Cultures Anthropology: Early Humans Anthropology: General Archaeology: General Environmental: General
Published

Thailand's Iron Age Log Coffin culture      (via sciencedaily.com)     Original source 

A mortuary practice known as Log Coffin culture characterizes the Iron Age of highland Pang Mapha in northwestern Thailand. Between 2,300 and 1,000 years ago, individuals were buried in large wooden coffins on stilts, mostly found in caves and rock shelters.