Tag: science

Scientists obtain magnetic nanopowder for 6G technology

Material scientists have developed a fast method for producing epsilon iron oxide and demonstrated its promise for next-generation communications devices. Its outstanding magnetic properties make it one of the most coveted materials, such as for the upcoming 6G generation of communication devices and for durable magnetic recording. The work was published in the Journal of Materials Chemistry C, a journal of the Royal Society of Chemistry.

Iron oxide (III) is one of the most widespread oxides on Earth. It is mostly found as the mineral hematite (or alpha iron oxide, α-Fe2O3). Another stable and common modification is maghemite (or gamma modification, γ-Fe2O3). The former is widely used in industry as a red pigment, and the latter as a magnetic recording medium. The two modifications differ not only in crystalline structure ( alpha-iron oxide has hexagonal syngony and gamma-iron oxide has cubic syngony) but also in magnetic properties.

In addition to these forms of iron oxide (III), there are more exotic modifications such as epsilon-, beta-, zeta-, and even glassy. The most attractive phase is epsilon iron oxide, ε-Fe2O3. This modification has an extremely high coercive force (the ability of the material to resist an external magnetic field). The strength reaches 20 kOe at room temperature, which is comparable to the parameters of magnets based on expensive rare-earth elements. Furthermore, the material absorbs electromagnetic radiation in the sub-terahertz frequency range (100-300 GHz) through the effect of natural ferromagnetic resonance.The frequency of such resonance is one of the criteria for the use of materials in wireless communications devices—the 4G standard uses megahertz and 5G uses tens of gigahertz. There are plans to use the sub-terahertz range as a working range in the sixth generation (6G) wireless technology, which is being prepared for active introduction in our lives from the early 2030s.

The resulting material is suitable for the production of converting units or absorber circuits at these frequencies. For example, by using composite ε-Fe2O3 nanopowders it will be possible to make paints that absorb electromagnetic waves and thus shield rooms from extraneous signals, and protect signals from interception from the outside. The ε-Fe2O3 itself can also be used in 6G reception devices.

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Challenging UN, Study Finds Sun—not CO2—May Be Behind Global Warming

Climate scientist Dr. Ronan Connolly, Dr. Willie Soon and 21 other scientists claim the conclusions of the latest “code red” IPCC climate report, and the certainty with which those conclusions are expressed, are dependent on the IPCC authors’ narrow choice of datasets. The scientists assert that the inclusion of additional credible data sets would have led to very different conclusions about the alleged threat of anthropogenic global warming.

Challenging UN, Study Finds Sun—not CO2—May Be Behind Global Warming

New peer-reviewed paper finds evidence of systemic bias in UN data selection to support climate-change narrativeBy Alex Newman August 16, 2021 Updated: August 16, 2021

The sun and not human emissions of carbon dioxide (CO2) may be the main cause of warmer temperatures in recent decades, according to a new study with findings that sharply contradict the conclusions of the United Nations (UN) Intergovernmental Panel on Climate Change (IPCC).

The peer-reviewed paper, produced by a team of almost two dozen scientists from around the world, concluded that previous studies did not adequately consider the role of solar energy in explaining increased temperatures.

The new study was released just as the UN released its sixth “Assessment Report,” known as AR6, that once again argued in favor of the view that man-kind’s emissions of CO2 were to blame for global warming. The report said human responsibility was “unequivocal.”

But the new study casts serious doubt on the hypothesis.

Calling the blaming of CO2 by the IPCC “premature,” the climate scientists and solar physicists argued in the new paper that the UN IPCC’s conclusions blaming human emissions were based on “narrow and incomplete data about the Sun’s total irradiance.”

Indeed, the global climate body appears to display deliberate and systemic bias in what views, studies, and data are included in its influential reports, multiple authors told The Epoch Times in a series of phone and video interviews.

“Depending on which published data and studies you use, you can show that all of the warming is caused by the sun, but the IPCC uses a different data set to come up with the opposite conclusion,” lead study author Ronan Connolly, Ph.D. told The Epoch Times in a video interview.

“In their insistence on forcing a so-called scientific consensus, the IPCC seems to have decided to consider only those data sets and studies that support their chosen narrative,” he added.

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Scientists Grew Stem Cell ‘Mini Brains’. Then, The Brains Sort-of Developed Eyes

Mini brains grown in a lab from stem cells have spontaneously developed rudimentary eye structures, scientists report in a fascinating new paper.

On tiny, human-derived brain organoids grown in dishes, two bilaterally symmetrical optic cups were seen to grow, mirroring the development of eye structures in human embryos. This incredible result will help us to better understand the process of eye differentiation and development, as well as eye diseases.

“Our work highlights the remarkable ability of brain organoids to generate primitive sensory structures that are light sensitive and harbor cell types similar to those found in the body,” said neuroscientist Jay Gopalakrishnan of University Hospital Düsseldorf in Germany.

“These organoids can help to study brain-eye interactions during embryo development, model congenital retinal disorders, and generate patient-specific retinal cell types for personalized drug testing and transplantation therapies.”

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Fauci Oversaw Dangerous, Torturous Experiments On Dogs

In addition to overseeing funding of gain of function coronavirus experiments in Wuhan, and then lying about it, it has now emerged that Dr Fauci was in charge of funding horrid experimental research on dogs, including purposefully infecting the animals with parasites known to be contagious to humans.

The report from the White Coat Waste Project draws on information gleaned from a FOIA request which revealed that $400,000 was pumped into National Institutes of Allergy & Infectious Disease experiments to infect beagles with parasites from biting flies.

The report outlines how the dogs “endured months of pain, and once researchers were done with them, they were killed.”

The NIAID task order states that “28 beagles were to be allowed to develop infections for three months before being euthanized for blood collection.”

The records obtained under the FOIA request show the dogs “vocalized pain” during the experiments.

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‘It’s happening’: Ice worms emerge in Pacific Northwest glaciers

“It’s happening,” scientist Scott Hotaling told a reporter for OPB as he gestured across Paradise Glacier high up on Mount Rainier in Washington.

He was referencing hundreds of thousands of tiny, black worms emerging from a vast expanse of white snow.

Ice worms were first discovered in 1887 on Alaska’s Muir Glacier. They have since been spotted on most of the coastal glaciers in Alaska, British Columbia, Washington and Oregon. It was an exciting discovery because, for the longest time, biologists considered high-altitude glaciers sterile places where life was essentially impossible.

“I think they’re like the mascot of mountain glaciers in the West,” Hotaling told AccuWeather about ice worms. They’re incredibly cool, they’re incredibly abundant and they’re the largest organism on Earth that spends its whole life cycle in ice. ” When they’re around, there are hundreds per square meter. You cannot walk without stepping on them…so, it’s a very dramatic thing when they are present.”

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Scientific Authoritarianism Erodes Private Property And Human Liberty

“A fundamental difference between modern dictatorships and all other tyrannies of the past is that terror is no longer used as a means to exterminate and frighten opponents but as an instrument to rule masses of people who are perfectly obedient.”

~Hannah Arendt ~ (The Origins of Totalitarianism, 1966)

As a recipient of an E.C. Harwood Visiting Research Fellowship at the American Institute for Economic Research, I am inspired by tales of the principled battles that Colonel Harwood fought in support of the ideals behind the US Constitution. Taking his oath to support that great document as a lodestar, his support for the cause of human liberty and personal dignity led him to be a vocal opponent of the policies of FDR’s New Deal. As such, he continued doing so despite orders from his military commanders to cease his criticisms, eventually choosing to take early retirement from a promising military career as a graduate of West Point.

My lesson from his brave acts against the most powerful institutions in the US is that being a true patriot requires supporting an ideology of individual freedom rather than accepting partisan interests that violate foundational precepts. As such, Americans wishing for a united and prosperous country should follow Edward Harwood’s example to challenge the authority of government officials and question assertions of “experts” they use for support.

This contrarian behavior is even more urgent given the drift of public policy in recent years that would expand political powers beyond FDR’s wildest dreams, at the expense of private property rights and human liberty. As it is, public policies have become increasingly pointed towards responses to claims that irresponsible actions by humans are causing environmental degradation and climate change.

While the emergence of a novel coronavirus, SARS-CoV-2, and the disease that it might cause, Covid-19, are now at center stage, they share equal billing with the former only slightly in the background. In all events, this pair of menaces offers a convenient pretense for government officials to seek expansions in their powers that give them greater control over human actions and private resources. Initially, the specter of climate change was not enough to induce most citizens to accept enhanced political power that would diminish their liberty and curtail their personal rights.

However, fear ginned up during the recent pandemic based on pronouncements reflecting “expert” authority caused individuals to stop thinking of health as a personal issue and to embrace “public health.” The notion that “public health” reflects an objective reality must be challenged, especially since so much focus is on only one among many viruses and on only one disease among many ailments that afflict mankind. It is troubling that these political feats of legerdemain have induced many citizens to accept an artificial collective construct, with solidarity dominating individual autonomy and security elevated over human liberty.

While human health and protecting or rehabilitating the natural environment are indisputably worthy goals, a holistic approach to these matters requires considering their impact on the individual lives of humans.

Curbs on individual behavior and resource use to serve “public health” or the natural environment involve an unhealthy confusion of politics and “science.” In the end, the nonpharmaceutical interventions related to the Covid-19 pandemic might turn out to have been a dress rehearsal that serves as a roadmap for “climate action” to offset global warming.

Even if there is agreement on problems arising from human activity, the debate should be about the efficacy of the range of remedial actions that are available. As such, the quest for solutions should begin with an understanding that government interventions can often cause problems rather than be an appropriate remedy.

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Physicists Have Developed a New Way to Levitate Objects Using Sound Only

A newly developed method of levitating and manipulating tiny objects using sound waves could represent a major step forward for the technology.

Engineers in Japan have figured out how to pick up objects from reflective surfaces using acoustic levitation. Although they can’t yet do so reliably, the advance could help unlock the full potential of the manipulation of physical objects using nothing but sound.

Biomedical engineering, nanotechnology and the development of pharmaceuticals are some of the fields in which manipulating objects without touching them is potentially really useful. We can already do this with a technology called optical tweezers, which use lasers to generate sufficient radiation pressure to levitate and move extremely small particles.

Acoustic tweezers – where pressure generated with sound waves can be used to move particles – have the potential to be an even more powerful tool. They could be used to manipulate a wider range of materials, and at larger sizes – up to the millimeter scale.

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