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Archive for the ‘chemistry’ category: Page 219

Sep 4, 2021

Announcing the in-person book launch of “The Illusion of Knowledge: The paradigm shift in aging research that shows the way to human rejuvenation” with the presence of the author

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

Dr. The book launch will happen on September 4th, at 3 p.m. (Pacific Time) in Book Passage Ferry Building Store in San Francisco, California!
Please come to have an in-person chat with Dr. Katcher.

Dr. Harold Katcher is one of the discoverers of the human breast cancer gene (BRCA1), and has thousands of citations in the scientific literature, with publications ranging from protein structure to bacteriology, biotechnology, bioinformatics and biochemistry. He was the Academic Director for Natural Sciences for the Asian Division of the University of Maryland Global Campus, and nowadays is Chief Scientific Officer at Yuvan Research Inc., which is working on the development of rejuvenation treatments.

https://www.bookpassage.com/event/harold-katcher-illusion-kn…ding-store.
https://www.ntzplural.com/harold-katcher-launches-book.
https://www.facebook.com/events/553354852782737?ref=newsfeed.

Continue reading “Announcing the in-person book launch of ‘The Illusion of Knowledge: The paradigm shift in aging research that shows the way to human rejuvenation’ with the presence of the author” »

Sep 3, 2021

Scientists Build Molecule-Sized “Camera” To Watch Chemical Reactions in Real-Time

Posted by in categories: chemistry, solar power, sustainability

The device offers a far simpler way of monitoring how various chemical compounds form during reactions than the methods currently available to scientists, and the team that built the “camera” says it’s already using it to improve the technology behind solar cells.

Controlling the specific order and process of molecular assembly is notoriously difficult, especially at such tiny scales. Thankfully, the scientists realized that they merely had to plunk its components into room-temperature water — along with whatever molecules they wanted to study — and it would piece itself together automatically.

“We were surprised how powerful this new tool is, considering how straightforward it is to assemble,” first study author and Cambridge chemist Kamil Sokolowski said in a press release.

Sep 3, 2021

Researchers use organic semiconductor nanotubes to create new electrochemical actuator

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

University of Houston researchers are reporting a breakthrough in the field of materials science and engineering with the development of an electrochemical actuator that uses specialized organic semiconductor nanotubes (OSNTs).

Currently in the early stages of development, the actuator will become a key part of research contributing to the future of robotic, bioelectronic and .

“Electrochemical devices that transform to mechanical energy have potential use in numerous applications, ranging from soft robotics and micropumps to autofocus microlenses and bioelectronics,” said Mohammad Reza Abidian, associate professor of biomedical engineering in the UH Cullen College of Engineering. He’s the corresponding author of the article “Organic Semiconductor Nanotubes for Electrochemical Devices,” published in the journal Advanced Functional Materials, which details the discovery.

Sep 3, 2021

Nano ‘camera’ made using molecular glue allows real-time monitoring of chemical reactions

Posted by in categories: chemistry, nanotechnology, quantum physics

Researchers have made a tiny camera, held together with ‘molecular glue’ that allows them to observe chemical reactions in real time.

The device, made by a team from the University of Cambridge, combines tiny semiconductor nanocrystals called and gold nanoparticles using molecular glue called cucurbituril (CB). When added to water with the molecule to be studied, the components self-assemble in seconds into a stable, powerful tool that allows the real-time monitoring of chemical reactions.

The camera harvests light within the semiconductors, inducing electron transfer processes like those that occur in photosynthesis, which can be monitored using incorporated gold nanoparticle sensors and spectroscopic techniques. They were able to use the camera to observe which had been previously theorized but not directly observed.

Sep 2, 2021

Paving the path to electrically-pumped lasers from colloidal-quantum-dot solutions

Posted by in categories: biotech/medical, chemistry, computing, quantum physics, wearables

In a new review article in Nature Photonics, scientists from Los Alamos National Laboratory assess the status of research into colloidal quantum dot lasers with a focus on prospective electrically pumped devices, or laser diodes. The review analyzes the challenges for realizing lasing with electrical excitation, discusses approaches to overcome them, and surveys recent advances toward this objective.

“Colloidal quantum dot lasers have tremendous potential in a range of applications, including integrated optical circuits, wearable technologies, lab-on-a-chip devices, and advanced medical imaging and diagnostics,” said Victor Klimov, a senior researcher in the Chemistry division at Los Alamos and lead author of the cover article in Nature Photonics. “These solution-processed quantum dot present unique challenges, which we’re making good progress in overcoming.”

Heeyoung Jung and Namyoung Ahn, also of Los Alamos’ Chemistry division, are coauthors.

Sep 2, 2021

Mykola Tolmachov — Chernobyl-51 Indust. Cluster — Ecosystem Restoration — Energy/Chemical Byproducts

Posted by in categories: chemistry, nuclear energy, sustainability

The chernobyl special industrial zone — ecosystem restoration, remediation, and the development of energy and chemical byproducts — mykola tolmachov, chernobyl-51 industrial cluster.


The Chernobyl disaster / nuclear accident, occurred on April 26th, 1,986 at the No. 4 reactor in the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of Ukraine.

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Sep 1, 2021

Hidden bacterial hairs power nature’s ‘electric grid’

Posted by in categories: chemistry, energy, nanotechnology

A hair-like protein hidden inside bacteria serves as a sort of on-off switch for nature’s “electric grid,” a global web of bacteria-generated nanowires that permeates all oxygen-less soil and deep ocean beds, Yale researchers report in the journal Nature. “The ground beneath our feet, the entire globe, is electrically wired,” said Nikhil Malvankar, assistant professor of molecular biophysics and biochemistry at the Microbial Sciences Institute at Yale’s West Campus and senior author of the paper. “These previously hidden bacterial hairs are the molecular switch controlling the release of nanowires that make up nature’s electrical grid.”

Almost all living things breathe oxygen to get rid of excess electrons when converting nutrients into energy. Without access to oxygen, however, living deep under oceans or buried underground over billions of years have developed a way to respire by “breathing minerals,” like snorkeling, through tiny protein filaments called .

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Sep 1, 2021

Mitochondrial Diseases May Potentially Be Improved by New Approach

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

Mitochondrial DNA diseases are common neurological conditions caused by mutations in the mitochondrial genome or nuclear genes responsible for its maintenance. Current treatments for these disorders are focused on the management of the symptoms, rather than the correction of biochemical defects caused by the mutation. Now, scientists at Kyoto University’s Institute for Integrated Cell-Material Science (iCeMS) in Japan report a new approach where mutant DNA sequences inside cellular mitochondria can be eliminated using a bespoke chemical compound. The approach may lead to better treatments for mitochondrial diseases.

Their findings are published in the journal Cell Chemical Biology in a paper titled, “Targeted elimination of mutated mitochondrial DNA by a multi-functional conjugate capable of sequence-specific adenine alkylation.”

“Mutations in mitochondrial DNA (mtDNA) cause mitochondrial diseases, characterized by abnormal mitochondrial function,” the researchers wrote. “Although eliminating mutated mtDNA has potential to cure mitochondrial diseases, no chemical-based drugs in clinical trials are capable of selective modulation of mtDNA mutations. Here, we construct a class of compounds encompassing pyrrole-imidazole polyamides (PIPs), mitochondria-penetrating peptide, and chlorambucil, an adenine-specific DNA-alkylating reagent.”

Sep 1, 2021

Using liquid metal to turn motion into electricity, even underwater

Posted by in categories: chemistry, energy, engineering

Researchers at North Carolina State University have created a soft and stretchable device that converts movement into electricity and can work in wet environments.

“Mechanical energy—such as the kinetic energy of wind, waves, and vibrations from motors—is abundant,” says Michael Dickey, corresponding author of a paper on the work and Camille & Henry Dreyfus Professor of Chemical and Biomolecular Engineering at NC State. “We have created a that can turn this type of mechanical motion into . And one of its remarkable attributes is that it works perfectly well underwater.”

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Aug 31, 2021

Genes can respond to coded information in signals —or filter them out entirely

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

Genes can respond to coded information in signals—or filter them out entirely.


New research from North Carolina State University demonstrates that genes are capable of identifying and responding to coded information in light signals, as well as filtering out some signals entirely. The study shows how a single mechanism can trigger different behaviors from the same gene—and has applications in the biotechnology sector.

“The fundamental idea here is that you can encode information in the dynamics of a signal that a gene is receiving,” says Albert Keung, corresponding author of a paper on the work and an assistant professor of chemical and biomolecular engineering at NC State. “So, rather than a signal simply being present or absent, the way in which the signal is being presented matters.”

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