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Archive for the ‘chemistry’ category: Page 171

Oct 27, 2022

Machine learning could vastly speed up the search for new metals

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

The findings could help pave the way for greater use of machine learning in materials science, a field that still relies heavily on laboratory experimentation. Also, the technique of using machine learning to make predictions that are then checked in the lab could be adapted for discovery in other fields, such as chemistry and physics, say experts in materials science.

To understand why it’s a significant development, it’s worth looking at the traditional way new compounds are usually created, says Michael Titus, an assistant professor of materials engineering at Purdue University, who was not involved in the research. The process of tinkering in the lab is painstaking and inefficient.

Oct 26, 2022

New class of porous metal nanoparticles will yield new capabilities in absorption, chemical sensing and separations

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

Researchers from Northwestern University have made a significant advance in the way they produce exotic open-framework superlattices made of hollow metal nanoparticles.

Using tiny hollow particles termed metallic nanoframes and modifying them with appropriate sequences of DNA, the team found they could synthesize open-channel superlattices with pores ranging from 10 to 1,000 nanometers in size—sizes that have been difficult to access until now. This newfound control over porosity will enable researchers to use these colloidal crystals in molecular absorption and storage, separations, chemical sensing, catalysis and many optical applications.

The new study identifies 12 unique porous nanoparticle superlattices with control over symmetry, geometry and pore connectivity to highlight the generalizability of new design rules as a route to making novel materials.

Oct 26, 2022

COVID-causing virus in air detected with high-tech bubbles

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

Scientists have shown that they can detect SARS-CoV-2, the virus that causes COVID-19, in the air by using a nanotechnology-packed bubble that spills its chemical contents like a broken piñata when encountering the virus.

Such a could be positioned on a wall or ceiling, or in an air duct, where there’s constant air movement, to alert occupants immediately when even a trace level of the virus is present.

Continue reading “COVID-causing virus in air detected with high-tech bubbles” »

Oct 23, 2022

A New, Easier and Safer Way To Synthesize Medicines

Posted by in categories: biotech/medical, chemistry

Carbenes are among the most adaptable building blocks in organic chemistry, but they may also be dangerously hot. Due to their explosivity in the lab, scientists often avoid using these very reactive molecules.

However, in a new study that was just published in the journal Science, researchers from The Ohio State University describe a new, safer method to turn these short-lived, high-energy molecules into much more stable ones.

“Carbenes have an incredible amount of energy in them,” said David Nagib, co-author of the study and a professor of chemistry and biochemistry at Ohio State. “The value of that is they can do chemistry that you just cannot do any other way.”

Oct 22, 2022

‘Forever chemicals’ found in water systems serving millions: GAO

Posted by in categories: chemistry, government

“Forever chemicals” have been identified in water systems that serve about 9.5 million people in just six states, according to a new analysis of state data by a congressional watchdog.

The Government Accountability Office (GAO) published a report this week saying that the toxic chemicals had been found in at least 18 percent of water systems in Illinois, Massachusetts, New Hampshire, New Jersey, Ohio and Vermont.

Oct 22, 2022

Gas stoves can leak chemicals linked to cancer, mounting evidence shows

Posted by in categories: biotech/medical, chemistry

A study found hazardous air pollutants emitted from gas stoves in California, including benzene — a chemical known to cause to cancer in some people.

Oct 22, 2022

Scientists Create AI-Powered Laser Turret That Kills Cockroaches

Posted by in category: chemistry

Aside from the open-sourced nature of the project, the possible widespread applications of the technology also makes it noteworthy. It could be a plausible alternative to mechanical traps, as well as chemicals that often damage the environment and target non-pest insect species. Not to mention, it’s cheaper (the paper notes that all devices cost not more than $250) and more compact than other current pest-controlling technologies.

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That being said, although the prototype is suitable for academic research, there’s a lot more to be done before it can be deployed on a larger scale. For example, the paper notes that a smaller laser point would be more effective at killing the roaches but is difficult to implement experimentally. The ability to precisely control which parts of the cockroach’s bodies were hit would also be helpful, the paper says.

Oct 21, 2022

A Potential Game Changer for Type 2 Diabetics — New Therapeutic Target Identified

Posted by in categories: biotech/medical, chemistry

A new discovery could be a game-changer for patients with type 2 diabetes. Researchers at the Diabetes, Obesity, and Metabolism Institute (DOMI) at the Icahn School of Medicine at Mount Sinai have discovered a therapeutic target for the preservation and regeneration of beta cells (β cells), the cells in the pancreas that produce and distribute insulin. The finding could also help millions of individuals throughout the globe by preventing insulin resistance. The study was recently published in the journal Nature Communications.

Nature Communications is a peer-reviewed, open access, multidisciplinary, scientific journal published by Nature Research. It covers the natural sciences, including physics, biology, chemistry, medicine, and earth sciences. It began publishing in 2010 and has editorial offices in London, Berlin, New York City, and Shanghai.

Oct 20, 2022

Prof. Dr. Gordan Lauc, Ph.D. — Founder & CEO, Genos; CSO, GlycanAge; Advancing The Glycosciences

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

(http://www.pharma.unizg.hr/en/about-us/staff/gordan–lauc, 450.html) is Professor of Biochemistry and Molecular Biology at the University of Zagreb, Faculty of Pharmacy and Biochemistry, and Founder and CEO of Genos Ltd. (https://genos-glyco.com/), a research-intensive SME located in Zagreb, Croatia with core of expertise in molecular genetics and glycomics (The comprehensive study the entire complement of sugars, whether free or present in more complex molecules of an organism) and they perform contract research, contract analysis and service for numerous universities, hospitals and private individuals in Europe and overseas.

Prof. Dr. Lauc also is CSO of GlycanAge LTD (https://glycanage.com/), a company that has developed a ground-breaking test that analyses your personal glycobiome for insights in improving your health and monitoring your biological age, and Co-Director of the Human Glycome Project (https://human-glycome.org/).

Continue reading “Prof. Dr. Gordan Lauc, Ph.D. — Founder & CEO, Genos; CSO, GlycanAge; Advancing The Glycosciences” »

Oct 20, 2022

Ancient chemistry may explain why living things use ATP as the universal energy currency

Posted by in categories: chemistry, evolution

A simple two-carbon compound may have been a crucial player in the evolution of metabolism before the advent of cells, according to a new study published October 4 in the open access journal PLOS Biology, by Nick Lane and colleagues of University College London, U.K. The finding potentially sheds light on the earliest stages of prebiotic biochemistry, and suggests how ATP came to be the universal energy carrier of all cellular life today.

ATP, , is used by all cells as an intermediate. During , energy is captured when a is added to ADP (adenosine diphosphate) to generate ATP; cleavage of that phosphate releases energy to power most types of cellular functions. But building ATP’s complex chemical structure from scratch is energy intensive and requires six separate ATP-driven steps; while convincing models do allow for prebiotic formation of the ATP skeleton without energy from already-formed ATP, they also suggest ATP was likely quite scarce, and that some other compound may have played a central role in conversion of ADP to ADP at this stage of evolution.

The most likely candidate, Lane and colleagues believed, was the two-carbon compound acetyl phosphate (AcP), which functions today in both bacteria and archaea as a metabolic intermediate. AcP has been shown to phosphorylate ADP to ATP in water in the presence of iron ions, but a host of questions remained after that demonstration, including whether other might work as well, whether AcP is specific for ADP or instead could function just as well with diphosphates of other nucleosides (such as guanosine or cytosine), and whether iron is unique in its ability to catalyze ADP phosphorylation in water.