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Archive for the ‘chemistry’ category: Page 237

May 25, 2021

Eternally five years away? No, batteries are improving under your nose

Posted by in categories: chemistry, energy, sustainability

Researchers have also long been chasing lithium-air batteries that could realize a huge jump in energy density. And beyond lithium, there are other entirely different chemistries in development out there. At some point, one of them should click for one application or another.

Lithium-ion or not, an explosion of grid-scale battery installations is coming as prices continue to fall. The nascent art of lithium-ion battery recycling is also sure to mature and expand, improving the sustainability of these batteries by recovering and resetting their chemical building blocks.

Adopt cold-fusion-like skepticism of any of these future-looking statements as you please, but today’s batteries aren’t those of 20 or even 10 years ago. The same thing is bound to be true in another 10 years—even if that progress doesn’t come in a single, giant leap with global fanfare.

May 24, 2021

Spermageddon: are humans going extinct?

Posted by in categories: biological, chemistry, economics, existential risks

A new topic a new challenge for future civilizations.

I won’t write an introduction I will ask couple of questions to make you think about it.

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May 24, 2021

AI Helps Explain How Single-Celled Organisms Move in the Desired Direction Without a Brain

Posted by in categories: chemistry, food, robotics/AI

How do simple creatures manage to move to a specific place? Artificial intelligence and a physical model from TU Wien can now explain this.

How is it possible to move in the desired direction without a brain or nervous system? Single-celled organisms apparently manage this feat without any problems: for example, they can swim towards food with the help of small flagellar tails.

How these extremely simply built creatures manage to do this was not entirely clear until now. However, a research team at TU Wien (Vienna) has now been able to simulate this process on the computer: They calculated the physical interaction between a very simple model organism and its environment. This environment is a liquid with a non-uniform chemical composition, it contains food sources that are unevenly distributed.

May 23, 2021

Could blocking the sun save the planet?

Posted by in categories: chemistry, engineering, particle physics, sustainability

As the need for urgent climate solutions grows, scientists want to put more research into a technology known as solar geoengineering — the idea of chemically altering the atmosphere to reflect sunlight away from Earth.

It is seen as a potential method of cooling the planet and offsetting climate change. But could such a technology curtail a climate catastrophe — or become the cause of it?

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May 23, 2021

The Mental Universe Hypothesis: Reconnecting to Your Cosmic Self

Posted by in categories: alien life, chemistry, evolution, mathematics, particle physics, quantum physics

From a purely scientific frame of reference, many quantum phenomena like non-local correlations between distant entities and wave-particle duality, the wave function collapse and consistent histories, quantum entanglement and teleportation, the uncertainty principle and overall observer-dependence of reality pin down our conscious mind being intrinsic to reality. And this is the one thing the current physicalist paradigm fails to account for. Critical-mass anomalies will ultimately lead to the full paradigm shift in physics. It’s just a matter of time.

With consciousness as primary, everything remains the same and everything changes. Mathematics, physics, chemistry, biology are unchanged. What changes is our interpretation as to what they are describing. They are not describing the unfolding of an objective physical world, but transdimensional evolution of one’s conscious mind. There’s nothing “physical” about our physical reality except that we perceive it that way. By playing the “Game of Life” we evolved to survive not to see quantum mechanical reality. At our classical level of experiential reality we perceive ourselves as physical, at the quantum level we are a probabilistic wave function, which is pure information.

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May 23, 2021

Scientists 3D print graphene aerogels that purify water at scale

Posted by in categories: 3D printing, chemistry, sustainability

University at Buffalo (UB) researchers have developed a novel 3D printed water-purifying graphene aerogel that could be scaled for use at large wastewater treatment plants.

Composed of a styrofoam-like aerogel, latticed graphene and two bio-inspired polymers, the novel material is capable of removing dyes, metals and organic solvents from drinking water with 100% efficiency. Unlike similar nanosheets, the scientists’ design is reusable, doesn’t leave residue and can be 3D printed into larger sizes, thus they now aim to commercialize it for industrial-scale deployment.

“The goal is to safely remove contaminants from water without releasing any problematic chemical residue,” explained study co-author and assistant professor of environmental engineering at UB, Nirupam Aich. “The aerogels we’ve created hold their structure when put into water treatment systems, and they can be applied in diverse water treatment applications.”

May 21, 2021

A toxic chemical in tires is causing salmon populations to die

Posted by in category: chemistry

May 21, 2021

Why studying Uranus and Neptune could help us find habitable planets in other solar systems

Posted by in categories: chemistry, space

Astronomers have long predicted that deep beneath Neptune’s thick blue clouds lies a super-hot body of water that, despite its high temperature, never boils because of its incredibly high-pressure atmosphere. Uranus, another planet in the outer solar system of similar size and composition, is also believed to have a similar water-rich interior. Unfortunately, due to their distances from Earth, it is hard to directly probe these two planets to test our assumption. But scientists have found novel ways of testing their theories about these ice giants from Earth.

As described in a newly-published study from Nature Astronomy, scientists recreated the pressure and temperature of the interiors of Neptune and Uranus in a lab. The aim of the experiments was to test hypotheses about the chemistry of the deep water within these planets. But the study could have additional implications for what we know about potentially habitable planets in other solar systems.

“We were seeking to extend our knowledge of the deep interior of ice giants and determine what water-rock interactions at extreme conditions might exist,” said lead author Taehyun Kim, of Yonsei University in South Korea. “Ice giants and some exoplanets have very deep water layers, unlike terrestrial planets. We proposed the possibility of an atomic-scale mixing of two of the planet-building materials (water and rock) in the interiors of ice giants.”

May 21, 2021

Faecal transplantation: the cure for forgetfulness?

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

In our ongoing search to continuously improve our health, we occasionally pay lip service to the bacteria that live inside our gut. Normally this concern rarely manifests as anything more than occasionally remembering to buy some of those small bottles of pro-biotic yoghurts while shopping for your…


Recent discoveries have led to the conclusion that the gut plays an important role in cognitive function, with a large amount of research into understanding what is known as the gut-brain axis, which is the collective name given to the biochemical signalling pathways which take place between the gastrointestinal tract and the central nervous system. With an ever-increasing understanding of this pathway, along with an expanded understand of the gut flora (which was found to decline with age), researchers started to ask how the gut flora are involved in the ageing process.

In order to test how exactly ageing gut flora effects the gut-brain axis, researchers at the University of East Anglia conducted a faecal transplant from elderly mice into younger mice. Following this transplant, the young mice were then put through a serious of tests to assess their cognitive abilities. The younger mice showed significant changes in their microbial profiles, as well as significantly impaired capacity for spatial learning, as well as a decreased capacity for memorisation. These mice also showed an altered expression of proteins associated with neurotransmission and neuroplasticity, along with changes in the mice’s hippocampus, which is responsible for allowing the mice to memories new information, as well as recalling previous memories.

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May 21, 2021

An ancient star casts new light on the birth of the universe

Posted by in categories: chemistry, cosmology

Astronomers have discovered an exceedingly old star at the edge of our galaxy that seems to have formed only a few million years after the Big Bang – and what they are learning from it could affect their understanding of the birth of the universe.

In a study published last week, researchers found the star during an astronomical survey of the southern sky with a technique called narrowband photometry, which measures the brightness of distant stars in different wavelengths of light and can reveal stars that have low levels of heavy elements.

They then studied the star – known by its survey number as SPLUS J210428.01−004934.2, or SPLUS J2104−0049 for short – with high-resolution spectroscopy to determine its chemical makeup.