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Archive for the ‘engineering’ category: Page 69

Dec 30, 2022

Breakthrough in Lithium-air Batteries Could Help Put More Electric Vehicles On The Road

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

Year 2021 face_with_colon_three


Illinois Institute of Technology Assistant Professor of Chemical Engineering Mohammad Asadi has developed solutions to two major problems facing lithium-air batteries. Lithium-air batteries hold more energy in a smaller battery size than their more common counterpart, the lithium-ion battery, but until now, lithium-air batteries have been overlooked in commercial applications because lithium-air batteries tended to die after fewer recharges and require a lot more energy to charge than can be generated by the battery later.

After almost a decade working in the oil and gas industry, Asadi turned his focus to carbon dioxide in the atmosphere, particularly caused by the transportation industry, which consumes around 38 to 40 percent of the world’s energy. “With more widespread use of electric vehicles, you can drastically reduce transportation-based carbon emissions,” says Asadi. “But to put more electric vehicles on the road, we’ll need batteries—lots of them.”

Continue reading “Breakthrough in Lithium-air Batteries Could Help Put More Electric Vehicles On The Road” »

Dec 30, 2022

US startup wants to inject sulfur into the atmosphere to cool down the Earth

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

In theory, it could mitigate the effects of global warming; but experts are wary.

Make Sunsets, a California-based startup, released weather balloons that carried sulfur particles into the stratosphere which possibly burst there, releasing the chemical, MIT Technology Review.

Continue reading “US startup wants to inject sulfur into the atmosphere to cool down the Earth” »

Dec 29, 2022

A Startup Has Begun Releasing Chemicals Into the Stratosphere

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

Recently, a start-up company called Make Sunsets has begun releasing chemicals into the stratosphere as a form of geoengineering that is intended to help climate change. However, many are very hesitant about the startup and the result of what they are doing.

For perspective, geoengineering is when chemical particles are released into the stratosphere to manipulate the weather or climate. The theory is that when sulfur is released into the atmosphere that it mimics a natural process that occurs after volcanoes and that by doing this intentionally, we could ease global warming.

While it isn’t difficult to do this, it is very controversial. The reason for this is that it could potentially have dangerous side effects. Additionally, because some regions could endure worse side effects, it could cause issues across international lines.

Dec 26, 2022

Are We About To Be Assailed By Private Companies and Governments Implementing Geoengineering Experiments?

Posted by in category: engineering

A rogue company has started putting aerosols into the stratosphere because it believes it will cool the planet.


The company justifies its actions as necessary to begin to cool the planet’s atmosphere. The scientific community is in disagreement.

Dec 25, 2022

A startup says it’s begun releasing particles into the atmosphere, in an effort to tweak the climate

Posted by in categories: climatology, engineering, particle physics

Make Sunsets is already attempting to earn revenue for geoengineering, a move likely to provoke widespread criticism.

Dec 19, 2022

A diamond-based quantum amplifier

Posted by in categories: chemistry, energy, engineering, quantum physics

In physics, weak microwave signals can be amplified with minimal added noise. For instance, artificial quantum systems based on superconducting circuits can amplify and detect single microwave patterns, although at millikelvin temperatures. Researchers can use natural quantum systems for low-noise microwave amplification via stimulated emission effects; however, they generate a higher noise at functionalities greater than 1 Kelvin.

In this new work, published in the journal Science Advances, Alexander Sherman and a team of scientists in chemistry at the Technical-Israel Institute of Technology, Haifa, used electron spins in diamond as a quantum microwave amplifier to function with quantum-limited internal noise above liquid nitrogen temperatures. The team reported details of the amplifier’s design, gain, bandwidth, saturation power and noise to facilitate hitherto unavailable applications in quantum science, engineering and physics.

Dec 18, 2022

A New Way to Achieve Nuclear Fusion: Helion

Posted by in category: engineering

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Dec 17, 2022

Scientists find material with highest toughness ever recorded

Posted by in categories: engineering, transportation

“The toughness of this material near liquid helium temperatures (20 kelvin, −253°C) is as high as 500 megapascals square root metres,” said Robert Ritchie, Professor of Mechanical Engineering at Berkeley and study co-author. “In the same units, the toughness of a piece of silicon is one, the aluminium airframe in passenger airplanes is about 35, and the toughness of some of the best steels is around 100. So, 500, it’s a staggering number.”

The team’s new findings, alongside other recent work on HEAs, may force the materials science community to reconsider long-held notions about how physical characteristics give rise to performance.

“It’s amusing, because metallurgists say that the structure of a material defines its properties, but the structure of the CrCoNi is the simplest you can imagine – it’s just grains,” explained Ritchie.

Dec 16, 2022

Using quantum-inspired computing to discover an improved catalyst for clean hydrogen

Posted by in categories: computing, engineering, quantum physics, sustainability

Researchers from the University of Toronto’s Faculty of Applied Science & Engineering and Fujitsu have developed a new way of searching through ‘chemical space’ for materials with desirable properties.

The technique has resulted in a promising new catalyst material that could help lower the cost of producing clean hydrogen.

The discovery represents an important step toward more sustainable ways of storing energy, including from renewable but intermittent sources, such as solar and wind power.

Dec 16, 2022

Anti-cancer CAR-T therapy reengineers T cells to kill tumors — and researchers are expanding the limited types of cancer it can target

Posted by in categories: biotech/medical, engineering

So we designed CAR-T cells to produce IL-2 using synNotch. Now, when a CAR-T cell encounters a tumor, it produces IL-2 within the tumor instead of outside it, avoiding causing harm to surrounding healthy cells. Because synNotch is able to bypass the barriers tumors put up, it is able to help T cells amp up and maintain the amount of IL-2 they can make, allowing the T cells to keep functioning even in a hostile microenvironment.

We tested our CAR-T cells modified with synNotch on mice with pancreatic cancer and melanoma. We found that CAR-T cells with synNotch-induced IL-2 were able to produce enough extra IL-2 to overcome the tumors’ defensive barriers and fully activate, completely eliminating the tumors. While all of the mice receiving synNotch modified CAR-T cells survived, none of the CAR-T-only mice did.

Continue reading “Anti-cancer CAR-T therapy reengineers T cells to kill tumors — and researchers are expanding the limited types of cancer it can target” »

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