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Dec 6, 2022

Latest Webb Results Could Literally Break All Cosmology

Posted by in categories: cosmology, physics

The James Webb Space Telescope has finally made its first dark matter observations, and the results could lead us to new physics. They have questioned our understanding of dark matter and the large-scale structure-formation of the Universe. Dark matter is one of the most mysterious entities in the cosmos. Our best cosmological models show that 27% of the observable Universe is made of dark matter. We can’t see it, but its existence can be inferred because of its effect on surrounding baryonic matter. The true nature of dark matter is still one of the biggest mysteries in cosmology. The most successful cosmological model to date, the lambda cold dark matter or the LCDM model, makes a critical prediction regarding dark matter. It says that cold dark matter played an important role to form the large-scale structures we observe today.

So far, we did not have the technology to test this prediction. But the James Webb Space Telescope opened the windows to the first billion years and the last unexplored era in the history of the Universe. The super-early galaxies discovered by Webb in its Early Release Science program provided an opportunity to test the predictions made by the LCDM model. And when astronomers did that, the results were completely unexpected. So what do these primordial galaxies discovered by Webb tell us? What did Webb find in its first dark matter observations? Finally, and most importantly, how can these results change the course of cosmology?

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Dec 6, 2022

A gastroenterologist shares 2 diet rules she follows for a healthy gut and to prevent colon cancer

Posted by in categories: biotech/medical, health

With all the factors that may impact gut health, it can be hard to know what’s causing stomach troubles and potentially affecting long-term wellness.

In a recent TikTok video via Houston Methodist hospital system, gastroenterologist Dr. Neeharika Kalakota shared a few simple rules of thumb she follows to maintain a healthy gut.

As an expert on digestive health, Kalakota said she recommends that her patients stay up-to-date on colon cancer screenings and avoid colonic “cleanses,” which can wreak havoc on the bowel and rectum.

Dec 6, 2022

Traffic Pollution Has Been Associated With an Increased Risk of Dementia

Posted by in categories: biotech/medical, neuroscience

According to a meta-analysis recently published in Neurology, the medical journal of the American Academy of Neurology, higher exposure to a certain type of traffic-related air pollution known as particulate matter may be connected to an increased risk of dementia. Researchers focused on fine particulate matter, or PM2.5, which is made up of airborne pollutants with a diameter of fewer than 2.5 microns. The meta-analysis examined all available studies on the relationship between air pollution and dementia risk.

“As people continue to live longer, conditions like dementia are becoming more common, so detecting and understanding preventable risk factors is key to reducing the increase of this disease,” said study author Ehsan Abolhasani, MD, MSc, of Western University in London, Canada. “Since a report by the World Health Organization showed that more than 90% of the world population is living in areas with higher than recommended levels of air pollution, our results provide more evidence for enforcing regulations for air quality and accelerating the transition from fossil fuels to sustainable energies.”

17 studies were analyzed by the researchers for the meta-analysis. Participants had a minimum age of 40. More than 91 million individuals took part in all the studies. 5.5 million of them, or 6%, developed dementia.

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Dec 6, 2022

Pulsar Fusion — In orbit assembly of nuclear fusion rocket

Posted by in categories: nuclear energy, space travel

The animation describes the concept of launching a nuclear fusion reactor into orbit in sections for final assembly in space. The concept uses live footage of Pulsar’s existing hall effect plasma thrusters (HET) and hybrid rocket engines tested at RAF Westcott in March 2022. Pulsar is also developing LOX / Methane rocket motors to support this concept.

Dec 6, 2022

Gravitas | Operation dragon net: How China is setting up illegal police stations globally

Posted by in category: futurism

China has set up over 100 illegal police stations abroad. They have been tasked with policing the Chinese community, and threatening dissidents to return home. A lot of these police stations are in the West, but the Western govts are silent. Are they scared of China? Priyanka Sharma tells you.

#Gravitas #China #PoliceStations.

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Dec 6, 2022

ChatGPT (not) for Business

Posted by in category: business

ChatGPT is amazing. It really is.

It can write romantic poems, summarize complex text, provide engaging fun conversations, and answer sophisticated general knowledge questions. It can also produce a fake report for your boss of what you’ve (supposedly) been working on for the last few days — complete with perfectly (surface) plausible code snippets! It makes up stuff.

So could ChatGPT replace human agents in a contact center?

Dec 6, 2022

Long noncoding RNA

Posted by in category: futurism

This Video Explains Long noncoding RNA.

Thank You For Watching.

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Dec 6, 2022

Study finds DNA repair declines with age, limiting fertility

Posted by in categories: biotech/medical, genetics

Even worms have a ticking fertility clock. Older worms are less efficient at repairing broken DNA strands while making egg cells—part of a process that’s essential for fertility. A new study from University of Oregon (UO) biologists suggests one possible reason that reproduction slows with age.

Researchers from the lab of Diana Libuda report the findings in a paper published Nov. 7 in PLOS Genetics.

Each sperm or egg cell has only half the number of chromosomes found in a regular cell. During meiosis, the cell division process that forms sperm and eggs, the parent cells must evenly divide their DNA. The costs of error can be high, since incorrectly divided chromosomes are a major cause of birth defects.

Dec 6, 2022

AI-designed structured material creates super-resolution images using a low-resolution display

Posted by in categories: augmented reality, robotics/AI, virtual reality, wearables

One of the promising technologies being developed for next-generation augmented/virtual reality (AR/VR) systems is holographic image displays that use coherent light illumination to emulate the 3D optical waves representing, for example, the objects within a scene. These holographic image displays can potentially simplify the optical setup of a wearable display, leading to compact and lightweight form factors.

On the other hand, an ideal AR/VR experience requires relatively to be formed within a large field-of-view to match the resolution and the viewing angles of the human eye. However, the capabilities of holographic image projection systems are restricted mainly due to the limited number of independently controllable pixels in existing image projectors and spatial light modulators.

A recent study published in Science Advances reported a deep learning-designed transmissive material that can project super-resolved images using low-resolution image displays. In their paper titled “Super-resolution image display using diffractive decoders,” UCLA researchers, led by Professor Aydogan Ozcan, used deep learning to spatially-engineer transmissive diffractive layers at the wavelength scale, and created a material-based physical image decoder that achieves super-resolution image projection as the light is transmitted through its layers.

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Dec 6, 2022

Fractal parallel computing, a geometry-inspired productivity booster

Posted by in categories: robotics/AI, supercomputing

When trying to make a purchase with a shopping app, we may quickly browse the recommendation list while admitting that the machine does know about us—at least, it is learning to do so. As an effective emerging technology, machine learning (ML) has become pretty much pervasive with an application spectrum ranging from miscellaneous apps to supercomputing.

Dedicated ML computers are thus being developed at various scales, but their productivity is somewhat limited: the workload and development cost are largely concentrated in their software stacks, which need to be developed or reworked on an ad hoc basis to support every scaled model.

To solve the problem, researchers from the Chinese Academy of Sciences (CAS) proposed a parallel computing model and published their research in Intelligent Computing on Sept. 5.

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