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Archive for the ‘engineering’ category: Page 62

Mar 4, 2023

George Church: Biomanufacturing, CRISPR,1 million cell edits, Woolly mammoth-Learning with Lowell-164

Posted by in categories: engineering, genetics, life extension

George Church is a geneticist known for his pioneering work in developing new technologies for genome sequencing, editing, and synthesis. He has also been involved in research on genome engineering and gene therapy.

Links.
https://wyss.harvard.edu/team/core-faculty/george-church/
https://arep.med.harvard.edu/

Continue reading “George Church: Biomanufacturing, CRISPR,1 million cell edits, Woolly mammoth-Learning with Lowell-164” »

Mar 1, 2023

Physics of Superpropulsion: Super-Fast Sharpshooter Insect Urination Using a “Butt Flicker”

Posted by in categories: biological, chemistry, engineering, physics

Tiny insects known as sharpshooters excrete by catapulting urine drops at incredible accelerations. Their excretion is the first example of superpropulsion discovered in a biological system.

Saad Bhamla was in his backyard when he noticed something he had never seen before: an insect urinating. Although nearly impossible to see, the insect formed an almost perfectly round droplet on its tail and then launched it away so quickly that it seemed to disappear. The tiny insect relieved itself repeatedly for hours.

Continue reading “Physics of Superpropulsion: Super-Fast Sharpshooter Insect Urination Using a ‘Butt Flicker’” »

Mar 1, 2023

Observing Cells in Their Natural State with Digital Holographic Cytometry

Posted by in category: engineering

Technological and engineering advances let researchers delve deeper into cell function and behavior in physiological and pathological settings.

Feb 28, 2023

Super-fast insect urination powered by the physics of superpropulsion

Posted by in categories: chemistry, engineering, physics

Saad Bhamla was in his backyard when he noticed something he had never seen before: an insect urinating. Although nearly impossible to see, the insect formed an almost perfectly round droplet on its tail and then launched it away so quickly that it seemed to disappear. The tiny insect relieved itself repeatedly for hours.

It’s generally taken for granted that what goes in must come out, so when it comes to fluid dynamics in animals, the research is largely focused on feeding rather than excretion. But Bhamla, an assistant professor in the School of Chemical and Biomolecular Engineering at the Georgia Institute of Technology, had a hunch that what he saw wasn’t trivial.

“Little is known about the fluid dynamics of excretion, despite its impact on the morphology, energetics, and behavior of animals,” Bhamla said. “We wanted to see if this tiny insect had come up with any clever engineering or physics innovations in order to pee this way.”

Feb 27, 2023

Researchers uncover new water monitoring technique

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

Water is a vital resource, and clean water is a necessity. Texas A&M University researchers have developed a new technique to monitor one of the key processes of purifying water in real time.

Raw water contains microscopic pathogens that are too small to remove during water and easily. Chemicals are added to form large clumps called flocs, which are easily filtered out. Flocculation is the process used in water treatment to remove suspended particles from the water.

“Coagulant chemicals need to be added to purify drinking water and remove turbidity (cloudiness) and microbes that are too small to be visible to the ,” said Dr. Kuang-An Chang, professor in the Zachry Department of Civil and Environmental Engineering at Texas A&M.

Feb 27, 2023

New material may offer key to solving quantum computing issue

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

A new form of heterostructure of layered two-dimensional (2D) materials may enable quantum computing to overcome key barriers to its widespread application, according to an international team of researchers.

The researchers were led by a team that is part of the Penn State Center for Nanoscale Science (CNS), one of 19 Materials Research Science and Engineering Centers (MRSEC) in the United States funded by the National Science Foundation. Their work was published Feb. 13 in Nature Materials.

A regular computer consists of billions of transistors, known as bits, and are governed by binary code (“0” = off and “1” = on). A , also known as a qubit, is based on and can be both a “0” and a “1” at the same time. This is known as superposition and can enable quantum computers to be more powerful than the regular, classical computers.

Feb 27, 2023

New strategy proposed for bandgap engineering and maintaining material properties under high pressure

Posted by in categories: engineering, materials

Prof. Ding Junfeng and his team from the Hefei Institutes of Physical Science (HFIPS) of the Chinese Academy of Science, together with Prof. Zhang Genqiang from the University of Science and Technology of China, have achieved band gap optimization and photoelectric response enhancement of carbon nitride in the nitrogen vacancy graphite phase under high pressure.

Their results were published in the journal Physical Review Applied.

Graphitic carbon nitride (g-C3N4) has performed well in many fields, such as high-efficiency photocatalytic hydrogen production and water oxidation. However, the wide band gap of 2.7 eV of the original g-C3N4 limits its light absorption in the visible region. High technology is an to change the properties while remaining composition. Therefore, band gap engineering of g-C3N4 by high-pressure technology can significantly enhance its photocatalytic activity and improve its application potential.

Feb 27, 2023

Researcher develops new methods to measure ‘forever chemicals’ in both the atmosphere and in aerosol particles

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

From regulators to researchers and most industries in between, all eyes are on PFAS, per-and polyfluoroalkyl substances, are a class of highly fluorinated human-made compounds that have been used for decades in everything from nonstick cookware and personal care products to fire-fighting foams and school uniforms. Their commonality and extreme resistance to environmental degradation has made them ubiquitous in ground water, soil, and worst of all humans. Linked to a slew of health risks including liver toxicity, bladder cancer, and decreased immune response to vaccinations, exposure to PFAS is concerning. So, how can we eliminate these “forever chemicals?”

Historically, PFAS substances have only been characterized in water and soil, but the emission of these compounds during chemical manufacturing, use, and disposal results in their emission into the air. Ryan Sullivan, Professor of Mechanical Engineering and Chemistry at Carnegie Mellon University, has been developing new methods to measure PFAS in both the atmosphere and in aerosol particles to answer outstanding questions regarding PFAS atmospheric components that lead to human exposure. His group is also developing new approaches to destroy forever molecules that are not removed by conventional water treatment plants.

The research is published in the journal Environmental Science: Processes & Impacts.

Feb 26, 2023

Project ‘GW’: China to thwart Starlink influence with ‘13,000’ satellites

Posted by in categories: Elon Musk, engineering, internet, satellites

The plan is to dispatch a swarm of satellites in the lower Earth orbit to stop Elon Musk from monopolizing the low-Earth orbit space, claims a report.

China allegedly plans to deploy a swarm of satellites in low Earth orbit to compete with Elon Musk’s Starlink and offer internet services, an alternative to people worldwide.

The plan to dispatch almost 13,000 satellites to throttle Starlink exposure comes under the mysterious project, code name “GW,” according to People’s Liberation Army’s (PLA) space engineering researchers.

Feb 26, 2023

New thermal management technology for electronic devices reduces bulk while improving cooling

Posted by in categories: computing, engineering, space

Electronic devices generate heat, and that heat must be dissipated. If it isn’t, the high temperatures can compromise device function, or even damage the devices and their surroundings.

Now, a team from UIUC and UC Berkeley have published a paper in Nature Electronics detailing a new cooling method that offers a host of benefits, not the least of which is space efficiency that offers a substantial increase over conventional approaches in devices’ power per unit volume.

Tarek Gebrael, the lead author and a PhD student in mechanical engineering, explains that the existing solutions suffer from three shortcomings. “First, they can be expensive and difficult to scale up,” he says. Heat spreaders made of diamond, for example, are sometimes used at the chip level, but they aren’t cheap.

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