Menu

Blog

Page 5748

Jan 20, 2021

Fusion companies aiming at trillion dollar market

Posted by in categories: energy, government, space

This is the third installment in a three-part series. Read parts one and two.

In the third and final part of our series, Fusion Industry Association director Andrew Holland tells Asia Times’ correspondent Jonathan Tennenbaum how the private sector is leap-frogging government programs in the race to develop commercial fusion power plants.

Andrew Holland: So now the private sector is coming in. You mentioned high-temperature superconductors. That’s an important new thing. There’s a whole range of new developments that come from outside of the fusion space that are now being applied.

Jan 20, 2021

The First Cubesat With a Hall-Effect Thruster has Gone to Space

Posted by in categories: energy, satellites

Student-led teams aren’t the only ones testing out novel electric propulsion techniques recently. Back in November, a company called Exotrail successfully tested a completely new kind of electric propulsion system in space – a small hall-effect thruster.

Hall effect thrusters themselves have been around for awhile. However, they have been limited in their practicality, primarily because of their size. Normally they are about the size of a refrigerator and require kilowatts of power, making them impractical for any small satellites.

That’s where Exotrail’s novel system shines. It is about the size of a 2 liter bottle of soda (or pop if you’re from that part of the world), and only requires around 50 watts of power. This makes the propulsion system ideal for satellites ranging from 10 to 250 kg.

Jan 20, 2021

Trillions of Brood 10 cicadas to emerge in U.S. after 17 years underground

Posted by in category: futurism

The noisy bugs will appear for the first time since 2004 in 15 states.

Jan 20, 2021

NHS patients among first to access new CAR T cell therapy for lymphoma

Posted by in categories: biotech/medical, policy

NHS clinicians in England will be among the first to offer a cutting-edge personalised cancer treatment to some people with lymphoma, after the CAR T cell therapy was approved for NHS use.

Tecartus – a immune-boosting treatment that engineers a patient’s own immune cells to kill their cancer – has been recommended by the National Institute for Health and Care Excellence (NICE) for people with a rare type of non-Hodgkin lymphoma.

NICE estimates that around 100 people a year with mantle cell lymphoma could be treated with this therapy. Kruti Shrotri, head of policy development at Cancer Research UK, said the news will be welcomed by people with mantle cell lymphoma.

Jan 20, 2021

Scientists gain an unprecedented view of irradiated nuclear fuel

Posted by in categories: materials, nuclear energy

In a feat requiring perseverance, world-leading technology, and no small amount of caution, scientists have used intense X-rays to inspect irradiated nuclear fuel. The imaging, led by researchers at Purdue University and conducted at the U.S. Department of Energy’s (DOE) Argonne National Laboratory, revealed a 3D view of the fuel’s interior structure, laying the groundwork for better nuclear fuel designs and models.

Until now, examinations of uranium fuel have been limited to mostly surface microscopy or to various characterization techniques using mock versions that possess little radioactivity. But scientists want to know at a deeper level how the material changes as it undergoes fission inside a . The resulting insights from this study, which the Journal of Nuclear Materials published in August 2020, can lead to that function more efficiently and cost less to develop.

Continue reading “Scientists gain an unprecedented view of irradiated nuclear fuel” »

Jan 20, 2021

Microplastics could be eliminated from wastewater at source

Posted by in category: materials

A team of researchers from the Institut national de la recherche scientifique (INRS), Quebec, Canada, have developed an electrolytic process for treating wastewater, degrading microplastics at the source.

Microplastics are fragments of plastic less than 5mm long, often contained in toiletries or shedding from polyester clothing. They are present in virtually every corner of the Earth, and pose a particularly serious threat to marine ecosystems. High concentrations of microplastics can be carried into the environment in wastewater.

There are no established degradation methods to handle microplastics during wastewater treatment; although some techniques exist, these involve physical separation as a means of filtering the pollutant. These techniques do not degrade microplastics, which requires additional work to manage the separated fragments. So far, research into degradation of microplastics has been very limited.

Jan 20, 2021

Monarch butterfly population moves closer to extinction

Posted by in category: existential risks

SAN FRANCISCO (AP) — The number of western monarch butterflies wintering along the California coast has plummeted precipitously to a record low, putting the orange-and-black insects closer to extinction, researchers announced Tuesday.

An annual winter count by the Xerces Society recorded fewer than 2000 butterflies, a massive decline from the tens of thousands tallied in recent years and the millions that clustered in trees from Northern California’s Marin County to San Diego County in the south in the 1980s.

Western monarch butterflies head south from the Pacific Northwest to California each winter, returning to the same places and even the same trees, where they cluster to keep warm. The monarchs generally arrive in California at the beginning of November and spread across the country once warmer weather arrives in March.

Jan 20, 2021

Study reveals immune driver of brain aging

Posted by in categories: biotech/medical, life extension, neuroscience

A brain aging link ~~~.


Suppose Smokey the Bear were to go on a tear and start setting forest fires instead of putting them out. That roughly describes the behavior of certain cells of our immune system that become increasingly irascible as we grow older. Instead of stamping out embers, they stoke the flames of chronic inflammation.

Biologists have long theorized that reducing this inflammation could slow the and delay the onset of age-associated conditions, such as , Alzheimer’s disease, cancer and frailty, and perhaps even forestall the gradual loss of mental acuity that happens to nearly everyone.

Continue reading “Study reveals immune driver of brain aging” »

Jan 20, 2021

Red yeast from deep-sea sediment shows anticancer and antibacterial properties

Posted by in categories: biotech/medical, chemistry, genetics

Numerous natural products are awaiting discovery in all kinds of natural habitats. Especially microorganisms such as bacteria or fungi are able to produce diverse natural products with high biomedical application potential in particular as antibiotics and anticancer agents. This includes the so-called red yeast of the species Rhodotorula mucilaginosa, isolated from a deep-sea sediment sample from the Mid-Atlantic Ridge and analyzed for its genome and chemical constituents by researchers from GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech) of GEOMAR Helmholtz Centre for Ocean Research Kiel and Kiel University (CAU). In a joint effort, the scientists succeeded in demonstrating its anticancer and antibacterial effects. This study, partly-funded by Kiel Marine Science (KMS) of Kiel University, was recently published in the renowned scientific journal Marine Drugs.

A unique opportunity arose for researchers in the Department of Botanical Genetics and Molecular Biology at Kiel University, headed by Professor Frank Kempken. Via the Institute of Geosciences at Kiel University, his group had access to sediment samples from the Mid-Atlantic Ridge in 1600—4000 m depth collected during a research cruise with the German research vessel MARIA S. MERIAN. From one of these sediment cores taken at a depth of 3600 m, Prof. Kempken´s group succeeded in isolating and cultivating living fungi of the species Rhodotorula mucilaginosa. This slowly growing type of yeast, which belongs to the so-called Basidiomycete yeasts should not be confused with the well-known baker’s yeast. The species originally grows at great depth tolerating high hydrostatic pressure and rather cold temperatures.

“With the applied methodology we have succeeded in cultivating yeast colonies that can withstand and grow at room temperatures and under atmospheric pressure. These experiments have shown once more that microorganisms with specific physiological properties thrive in distinct ecological niches. The experiments have shown us further that special ecological niches can produce microorganisms with special characteristics. The assumption about the adaptability of this special genus has therefore encouraged us to further analyze this species,” says Kempken, whose research group has been analyzing genomes of marine fungi for more than ten years.

Jan 20, 2021

Astronomers Confirm That Darksat is About Half as Bright as an Unpainted Starlink

Posted by in categories: internet, satellites

Space-based internet service is poised to revolutionize the internet and bring high-speed connectivity to countless communities worldwide. Programs like SpaceX’s Starlink paint a picture of a bright future for the citizens of the world. Like many revolutionary technological advances, there is a dark side to Starlink.

The constellation of hundreds (and eventually thousands) of satellites reflect light back to the Earth, impinging on the darkness of the skies for professional astronomers and stargazers alike. Astronomers report images and data being disrupted by bright streaks left from the satellites passing through their observational fields of view. One potential solution to this issue is applying a dark coating to the reflective antennae on the satellites’ ground-facing side. In January of 2020, SpaceX launched the experimental DarkSat to test the effectiveness of such a coating. Astronomers around the world observed the new satellite. In December of 2020, a team from the National Astronomical Observatory of Japan (NAOJ) released a paper in The Astrophysical Journal showing detailed measurements of the efficacy of DarkSat.

So what were the results of the study? Is DarkSat an effective solution to the astronomical problem posed by Starlink? As is often the case in such studies, the answer is a little complicated.