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Archive for the ‘chemistry’ category: Page 142

Aug 16, 2022

Understanding why zinc-based fuel systems fail

Posted by in categories: chemistry, sustainability

While scientists have hoped that rechargeable zinc-manganese dioxide batteries could be developed into a viable alternative for grid storage applications, engineers at the University of Illinois Chicago and their colleagues identified the reasons these zinc-based fuel systems fail.

The scientists reached this conclusion after leveraging advanced , electrochemical experiments and theoretical calculations to look closer at how the zinc anode works with the manganese cathode in the .

Their findings are reported today in Nature Sustainability.

Aug 16, 2022

New study says rainwater is now unsafe to drink

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

A new study says that changing guidelines for forever chemicals have made rainwater all around the world unsafe to drink.


Rainwater is an important part of our planet’s ecosystem, and it helps fuel access to drinking water in many places. However, a new study suggests that rainwater is now unsafe to drink. The study says that “forever chemicals” have reached unsafe levels. These forever chemicals are scientifically known as per-and poly-fluoroalkyl substances (PFAS), and they don’t break down in the environment.

You can find PFAS chemicals in non-stick and stain-repellent properties. As such, they’re found in a lot of household food packages, electronics, and even cosmetics and cookware. However, it seems that these chemicals are now mixing with our rainwater. As a result, it has made rainwater unsafe to drink. And researchers say they can’t tie this issue to just one location. It’s everywhere in the world, even in Antarctica.

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Aug 16, 2022

The biosynthesis of the cannabinoids

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

Circa 2021 Basically this article details cannabinoids that have been successfully synthesized which can lead to even greater psychiatric medicine aswell as many of other types of uses.


Abstract Cannabis has been integral to Eurasian civilization for millennia, but a century of prohibition has limited investigation. With spreading legalization, science is pivoting to study the pharmacopeia of the cannabinoids, and a thorough understanding of their biosynthesis is required to engineer strains with specific cannabinoid profiles. This review surveys the biosynthesis and biochemistry of cannabinoids. The pathways and the enzymes’ mechanisms of action are discussed as is the non-enzymatic decarboxylation of the cannabinoic acids. There are still many gaps in our knowledge about the biosynthesis of the cannabinoids, especially for the minor components, and this review highlights the tools and approaches that will be applied to generate an improved understanding and consequent access to these potentially biomedically-relevant materials. Graphical abstract.

Aug 16, 2022

Coin-sized wearable biosensing platform for digital health

Posted by in categories: biotech/medical, chemistry, computing, health, neuroscience, wearables

A team of researchers in the Faculty of Engineering of The University of Hong Kong (HKU) has developed a coin-sized system that can read weak electrochemical signals and can be used for personalized health monitoring and the measurement of such conditions as diabetes, cardiovascular diseases and mental health. The discovery was featured on the cover of Analytical Chemistry.

The PERfECT System—an acronym for Personalized Electronic Reader for Electrochemical Transistors—is the world’s smallest system of its kind, measuring 1.5 cm x 1.5 cm x 0.2 cm and weighing only 0.4 gram. It is easily wearable, for instance integrated with a smartwatch or as a patch, to allow for continuous monitoring of biosignals such as glucose levels and antibody concentrations in blood and even sweat.

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Aug 16, 2022

Rainwater is no longer safe to drink anywhere on Earth, due to ‘forever chemicals’ linked to cancer, study suggests

Posted by in categories: biotech/medical, chemistry

PFAS are nicknamed “forever chemicals” because they last so long without breaking down. That’s made them pervasive in rainwater and soils.

Aug 16, 2022

Dr. Katherine High, MD — Gene Therapy Pioneer — President, Therapeutics, Asklepios BioPharmaceutical

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

Gene therapy pioneer — dr. katherine high, MD — president, therapeutics, askbio.


Dr. Katherine High, MD, is President, Therapeutics, at Asklepios BioPharmaceutical (AskBio — https://www.askbio.com/), where she is also member of the AskBio Board of Directors, and has responsibility for driving the strategic direction and execution of pre-clinical and clinical programs of the company.

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Aug 15, 2022

Researchers fabricate cobalt copper catalysts for methane on metal-organic framework

Posted by in categories: chemistry, energy, sustainability, transportation

The world is highly dependent on fossil fuels to power its industry and transportation. These fossil fuels lead to excessive carbon dioxide emission, which contributes to global warming and ocean acidification. One way to reduce this excessive carbon dioxide emission that is harmful to the environment is through the electroreduction of carbon dioxide into value-added fuels or chemicals using renewable energy. The idea of using this technology to produce methane has attracted wide interest. However, researchers have had limited success in developing efficient catalysts for methane.

A Soochow University research team has now developed a simple strategy for creating cobalt copper alloy catalysts that deliver outstanding methane activity and selectivity in electrocatalytic carbon dioxide reduction. Their research is published in Nano Research.

Over the past 10 years, scientists have made notable progress in advancing their understanding of catalysts and applying the knowledge to their fabrication. But the catalysts that have been developed have not been satisfactory for use with methane, in terms of selectivity or current density. Despite the great insights scientists have gained, the strategies they have attempted in creating catalysts for methane are just too costly to be useful in practical applications.

Aug 15, 2022

Building on the moon and Mars? You’ll need extraterrestrial cement for that

Posted by in categories: chemistry, engineering, habitats, space travel

Sustained space exploration will require infrastructure that doesn’t currently exist: buildings, housing, rocket landing pads.

So, where do you turn for construction materials when they are too big to fit in your carry-on and there’s no Home Depot in outer space?

“If we’re going to live and work on another planet like Mars or the moon, we need to make concrete. But we can’t take bags of concrete with us—we need to use local resources,” said Norman Wagner, Unidel Robert L. Pigford Chair of Chemical and Biomolecular Engineering at the University of Delaware.

Aug 15, 2022

Mysteries lurk below Iceland’s restless volcanoes

Posted by in category: chemistry

The unusual chemistry of the lava burbling to the island’s surface has raised many questions about what’s churning deep below.

Aug 14, 2022

MIT researchers discover bacteria’s new antiviral defense system

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

Specific proteins in prokaryotes detect viruses in unexpectedly direct ways.

Bacteria use a variety of defense strategies to fight off viral infection. STAND ATPases in humans are known to respond to bacterial infections by inducing programmed cell death in infected cells. Scientists predict that many more antiviral weapons will be discovered in the microbial world in the future. Scientists have discovered a new unexplored microbial defense system in bacteria.

Researchers uncovered specific proteins in prokaryotes (bacteria and archaea) that detect viruses in unexpectedly direct ways, recognizing critical parts of the viruses and causing the single-celled organisms to commit suicide to stop the infection within a microbial community, according to a press release published in the official website of the Massachusetts Institute of Technology (MIT) on Thursday.

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