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Archive for the ‘chemistry’ category: Page 215

Feb 15, 2022

What we knew about water was right after all

Posted by in categories: chemistry, computing

A comprehensive investigation by KAUST researchers sets the record straight on the formation of hydrogen peroxide in micrometer-sized water droplets, or microdroplets, and shows that ozone is the key to this transformation1,2.

The is a crucial site for numerous natural, domestic and such as ocean-atmosphere exchange, cloud and dew formation, aerated beverages and bioreactors. Yet, probing chemical transformations at the air– interface is challenging due to the lack of surface-specific techniques or computational models.

Recent research revealed that water spontaneously transforms into 30–110 micromolar hydrogen peroxide (H2O2) in microdroplets, obtained by condensing vapor or spraying water using pressurized nitrogen gas. The textbook understanding of water is thus challenged by how the mild temperature and pressure conditions, together with the absence of catalysts, co-solvents and significant applied energy, could break covalent O–H bonds. It was hypothesized that this unusual phenomenon resulted from an ultrahigh electric field at the air-water interface that assists OH radical formation, but no direct evidence has been reported.

Feb 15, 2022

Exploration & Origins Colloquium 2022: Space Exploration, Origins, & Astrobiology

Posted by in categories: alien life, chemistry

The ExplOrigins early career group invites you to join the 2022 Exploration and Origins Colloquium on February 17th–18th, 2022! The live broadcast portion of this colloquium will begin at 10am ET on February 18th.

We are thrilled to have Dr. Amy Mainzer as our plenary speaker. Dr. Mainzer is a professor of planetary science at the University of Arizona, principal investigator of NASA’s Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission, and lead of NASA’s Near-Earth Object (NEO) Surveyor mission. She also has achieved excellence in science communication, serving as the science curriculum consultant, on-camera host, and executive producer of the PBS Kids series Ready Jet Go! and as the science consultant for the Netflix movie Don’t Look Up.

Continue reading “Exploration & Origins Colloquium 2022: Space Exploration, Origins, & Astrobiology” »

Feb 14, 2022

Why the Nuclear Option is a Necessity if Humans Are Ever Going to Get to Mars and Return Alive

Posted by in categories: chemistry, nuclear energy, space travel

The ISS is 1,000 times closer to us than the Moon, and 600,000 times closer than Mars. To get to the latter and back safely, we need faster rocket propulsion systems.


Using the conventional chemical rocket technology we have perfected at this time, a single mission to Mars will require the launch of a mass equal to 10 ISS to be put into space. It will involve at least 30 and as many as 40 of the largest rockets we have today to put the spacecraft, crew and fuel needed for the mission. That doesn’t include adding reserves of fuel placed strategically along the route should a problem arise going to Mars and coming back. Brown states that the total cost of a single mission using this approach would exceed $80 billion using the yet-to-be-launched SLS as the primary vehicle. With SpaceX and the Starship and Heavy booster, the cost could be cut by half. But even $40 billion for a single mission seems excessive.

Using nuclear-powered propulsion systems, however, would eliminate the need to put megatons of fuel into orbit. The only time chemical rockets would be used would be in launching the crew and spaceship components to Earth orbit. That could be done in as few as three launches with the final assembled ship going to Mars and back and then being parked in Earth orbit to be used again on future missions.

Continue reading “Why the Nuclear Option is a Necessity if Humans Are Ever Going to Get to Mars and Return Alive” »

Feb 13, 2022

Big Breakthrough for “Massless” Energy Storage: Structural Battery That Performs 10x Better Than All Previous Versions

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

Researchers from Chalmers University of Technology have produced a structural battery that performs ten times better than all previous versions. It contains carbon fiber that serves simultaneously as an electrode, conductor, and load-bearing material. Their latest research breakthrough paves the way for essentially ’massless’ energy storage in vehicles and other technology.

The batteries in today’s electric cars constitute a large part of the vehicles’ weight, without fulfilling any load-bearing function. A structural battery, on the other hand, is one that works as both a power source and as part of the structure – for example, in a car body. This is termed ‘massless’ energy storage, because in essence the battery’s weight vanishes when it becomes part of the load-bearing structure. Calculations show that this type of multifunctional battery could greatly reduce the weight of an electric vehicle.

Continue reading “Big Breakthrough for ‘Massless’ Energy Storage: Structural Battery That Performs 10x Better Than All Previous Versions” »

Feb 13, 2022

Using algorithms to discover new mathematics

Posted by in categories: biological, chemistry, information science, mathematics, physics

Fundamental constants like e and π are ubiquitous in diverse fields of science, including physics, biology, chemistry, geometry, and abstract mathematics. Nevertheless, for centuries new mathematical formulas relating fundamental constants are scarce and are usually discovered sporadically by mathematical intuition or ingenuity.

Our algorithms search for new mathematical formulas. The community can suggest proofs for the conjectures or even propose or develop new algorithms. Any new conjecture, proof, or algorithm suggested will be named after you.

Feb 13, 2022

(Part II) Supercentenarian (112 — 116y) Blood Test Analysis

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

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Papers referenced in the video:
Main study:
Clinical course of the longest-lived man in the world: A case report.
https://pubmed.ncbi.nlm.nih.gov/34973348/

Continue reading “(Part II) Supercentenarian (112 — 116y) Blood Test Analysis” »

Feb 12, 2022

Moon develops targeted, reliable, long-lasting kill switch

Posted by in categories: biological, chemistry, engineering, genetics, space

Tae Seok Moon, associate professor of energy, environmental and chemical engineering at the McKelvey School of Engineering at Washington University in St. Louis, has taken a big step forward in his quest to design a modular, genetically engineered kill switch that integrates into any genetically engineered microbe, causing it to self-destruct under certain defined conditions.

His research was published Feb. 3 in the journal Nature Communications.

Feb 11, 2022

Hypoint opens UK hydrogen cell development unit to power eVTOL and other aircraft

Posted by in categories: chemistry, drones, life extension

Silicon Valley hydrogen fuel cell innovator Hypoint has inaugurated a new UK unit intended to speed development of its air-cooled aviation power technology, and ready it to supply zero-carbon power to next-generation aircraft like electric takeoff and landing vehicles (eVTOL) as they prepare to launch services.

HyPoint’s tech uses compressed air for both cooling and oxygen supplies delivered to its fuel systems, which are lighter, less polluting, have longer lifespans, and enable seven times more flight capacity than lithium-ion and other chemical batteries. Those attributes are luring developers of existing, new drone, and eVTOL craft to give emerging hydrogen cell products serious consideration as drivers of their vehicles – especially as the world seeks to reduce its carbon output. In 2018, aviation sector’s share of global CO2 emissions was 2.5%.

Feb 9, 2022

Inspired by insects, engineers create spiky materials that could pop bacteria

Posted by in categories: biotech/medical, chemistry

Researchers have created intricately patterned materials that mimic antimicrobial, adhesive and drag reducing properties found in natural surfaces.

The team from Imperial College London found inspiration in the wavy and spiky surfaces found in insects, including on cicada and dragonfly wings, which ward off .

They hope the new could be used to create self-disinfecting surfaces and offer an alternative to chemically functionalized surfaces and cleaners, which can promote the growth of antibiotic-resistant bacteria.

Feb 9, 2022

New set of chemical building blocks makes complex 3D molecules in a snap

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

A new set of molecular building blocks aims to make complex chemistry as simple and accessible as a toy construction kit.

Researchers at the University of Illinois Urbana-Champaign and collaborators at Revolution Medicines Inc. developed a new class of chemical building blocks that simply snap together to form 3D with complex twists and turns, and an automated machine to assemble the blocks like a 3D printer for molecules.

This automation could allow chemists and nonchemists alike to develop new pharmaceuticals, materials, diagnostic probes, catalysts, perfumes, sweeteners and more, said study leader Dr. Martin D. Burke, a professor of chemistry at Illinois and a member of the Carle Illinois College of Medicine, as well as a medical doctor. The researchers reported their findings in the journal Nature.