Showing posts with label human engineering. Show all posts
Showing posts with label human engineering. Show all posts

Friday, January 10, 2025

Light Hype and the Optical Revolution


Study suggests optogenetics can drive muscle contraction with greater control, less fatigue than electrical stimulation
May 2024, phys.org

Optogenetics meets neuroprosthetics - Instead of using electricity to stimulate muscles, they used light, and synthetic nerve fibers activate the muscles 

via MIT's Center for Bionics: Guillermo Herrera-Arcos et al, Closed-loop optogenetic neuromodulation enables high-fidelity fatigue-resistant muscle control, Science Robotics (2024). DOI: 10.1126/scirobotics.adi8995.



New 'game-changing' discovery for light-driven artificial intelligence
Aug 2024, phys.org

photonic AI accelerator - an emerging technology where photons are used instead of electrons to perform AI computations.

via Universities of Oxford, Muenster, Heidelberg, and Ghent: Bowei Dong et al, Partial coherence enhances parallelized photonic computing, Nature (2024). DOI: 10.1038/s41586-024-07590-y

Thursday, August 1, 2024

Manplants, Transplants and Anthropologizing of the Biosphere


Researchers show that introduced tardigrade proteins can slow metabolism in human cells
Mar 2024, phys.org

This work examines the mechanisms used by tardigrades to enter and exit from suspended animation when faced by environmental stress, and provides additional evidence that tardigrade proteins eventually could be used to make life-saving treatments available to people where refrigeration is not possible—and enhance storage of cell-based therapies, such as stem cells.

"Amazingly, when we introduce these proteins into human cells, they gel and slow down metabolism, just like in tardigrades"

The whole process is reversible. "When the stress is relieved, the tardigrade gels dissolve, and the human cells return to their normal metabolism"

via University of Wyoming Department of Molecular Biology, University of Bristol, Washington University in St. Louis, University of California-Merced, University of Bologna, University of Amsterdam: S. Sanchez‐Martinez et al, Labile assembly of a tardigrade protein induces biostasis, Protein Science (2024). DOI: 10.1002/pro.4941



By growing animal cells in rice grains, scientists dish up hybrid food
Feb 2024, phys.org

"hybrid meat rice" 

Rice grains are porous and have organized structures, providing a solid scaffold to house animal-derived cells in the nooks and crannies. Certain molecules found in rice can also nourish and promote the growth of these cells, making rice an ideal platform.

The team first coated rice with fish gelatin, a safe and edible ingredient that helps cells latch onto the rice better. Cow muscle and fat stem cells were then seeded into the rice and left to culture in the petri dish for nine to 11 days. The harvested final product is a cell-cultured beef rice with main ingredients that meet food safety requirements and have a low risk of triggering food allergies.

via Yonsei University in Korea: Rice grains integrated with animal cells: A Shortcut to a Sustainable Food System, Matter (2024). DOI: 10.1016/j.matt.2024.01.015.


Montana man used animal tissue and testicles to breed 'giant' sheep for sale to hunting preserves
Mar 2024, AP News

Court documents describe a yearslong conspiracy, beginning in 2013, in which Schubarth and at least five other people sought to create “giant sheep hybrids” by cross-breeding different species. Their goal was to garner high prices from hunting preserves where people shoot captive trophy game animals for a fee.

Using biological tissue obtained from a hunter who killed a wild sheep in Kyrgyzstan belonging to the world’s largest species of the animals — Marco Polo argali sheep — Schubarth procured cloned embryos of the animal from a lab, according to court documents.

The embryos were later implanted in a ewe, resulting in a pure Marco Polo argali sheep that Schubert named “Montana Mountain King,” the documents show. Semen from Montana Mountain King was used to artificially impregnate other ewes to create a larger and more valuable species of sheep, including one offspring that he reached an agreement to sell to two people in Texas for $10,000, according to the documents.

In 2019, Schubarth paid $400 to a hunting guide for testicles from a trophy-sized Rocky Mountain bighorn sheep killed in Montana. Schubarth extracted semen from bighorn sheep testicles and used it to breed large bighorn sheep and sheep crossbred with the argali species, the documents show.

Wednesday, April 6, 2022

Crispets


AKA - As In CRISPR-ing Your Pets

Xiaomi unveils CyberDog: A personable quadruped robot
Aug 2021, phys.org

Can recognize its owner by face. Which means it can recognize an intruder by its non-owner face. Also this: multiple cameras placed strategically over its body surface.

Also, and I know they didn't mean it, but the news outlet here (TechXplore) says "CyberDog is very similar in appearance to Boston Dynamics' Spot..." and there's a reason for that, which we all know. It's a good thing we're doing such a good job of stopping 12-year olds from pirating $50 video games, because we wouldn't want them to grow up and become entire countries (China) that steal $50 million dollars in research and development. 


Kawasaki’s Robot Ibex
Mar 2022, Spectrum IEEE

So, halfway between humanoid robots and wheeled robots, we wondered if there was an opportunity. That’s why we started developing Bex, a quadruped walking robot. We believe that the walking technology cultivated in the development of humanoid robots can definitely be applied to quadruped walking robots.


Novel approach to treating type 2 diabetes shows prolonged normal blood sugar levels after a single one-time procedure
Oct 2021, phys.org

"By taking cells from the patient and treating them, we eliminate the risk of rejection," Prof. Levenberg explained. 

Read "Engineered them," because that's what we're really doing, right?

via American Technion Society: Margarita Beckerman et al, GLUT4-overexpressing engineered muscle constructs as a therapeutic platform to normalize glycemia in diabetic mice, Science Advances (2021). DOI: 10.1126/sciadv.abg3947


Photosynthesizing algae injected into the blood vessels of tadpoles supply oxygen to their brains
Oct 2021, phys.org

German scientists have developed another method that allows tadpoles to "breathe" by introducing algae into their bloodstream to supply oxygen.

"The algae actually produced so much oxygen that they could bring the nerve cells back to life, if you will," says senior author Hans Straka of Ludwig-Maximilians-University Munich. "For many people, it sounds like science fiction, but after all, it's just the right combination of biological schemes and biological principles."

via Ludwig-Maximilians-University Munich: iScience, Özugur et al.: "Green oxygen power plants in the brain rescue neuronal activity" DOI: 10.1016/j.isci.2021.103158

No Man's Sky

Synthetic Biological Engineering and Plant Nanobionics:
Engineers create light-emitting plants that can be charged repeatedly
Sep 2021, phys.org

Using specialized nanoparticles embedded in plant leaves, MIT engineers have created a light-emitting plant that can be charged by an LED. After 10 seconds of charging, plants glow brightly for several minutes, and they can be recharged repeatedly.

Their first generation of light-emitting plants contained nanoparticles that carry luciferase and luciferin, which work together to give fireflies their glow. In the case of glowing plants, a light capacitor can be used to store light in the form of photons, then gradually release it over time using phosphor, a material that can absorb either visible or ultraviolet light and then slowly release it as a phosphorescent glow. The researchers used a compound called strontium aluminate, which can be formed into nanoparticles, as their phosphor. Before embedding them in plants, the researchers coated the particles in silica, which protects the plant from damage.

Infused through pores on the surface of the leaves, the particles accumulate in a spongy layer called the mesophyll, where they form a thin film that absorbs photons either from sunlight or an LED. They also showed that they could illuminate the leaves of a plant called the Thailand elephant ear, which can be more than a foot wide—a size that could make the plants useful as an outdoor lighting source.

via Massachusetts Institute of Technology: Pavlo Gordiichuk et al, Augmenting the living plant mesophyll into a photonic capacitor, Science Advances (2021). DOI: 10.1126/sciadv.abe9733


Scientists show how an enigmatic bacterium from the Gobi desert harvests solar energy
Feb 2022, phys.org

The new organism belongs to a rare bacterial genus called Gemmatimonas phototrophica, and it contained bacteriochlorophyll, a pigment related to chlorophylls found in plants. Analysis of its genome by a collaboration of European and British scientists suggested that this novel bacterium conducts an ancient form of photosynthesis.

via Diamond Light Source: Pu Qian et al, 2.4-Å structure of the double-ring Gemmatimonas phototrophica photosystem, Science Advances (2022). DOI: 10.1126/sciadv.abk3139


New technique improves directed evolution of microorganisms
Feb 2022, phys.org

(Matt Shipman article in the wild; he wrote a book about being a "public information officer", what some people might associate with a science journalist.)

They're using Inducible Directed Evolution (IDE), which sounds like a better way of programming a virus to make genetic changes to a bacteria, or whatever you like. Just another step on the ladder of artificial evolution.

via North Carolina State University: Ibrahim S Al'Abri et al, Inducible directed evolution of complex phenotypes in bacteria, Nucleic Acids Research (2022). DOI: 10.1093/nar/gkac094


Post Script:
Robot vacuum cleaner trained to dodge pet faeces
Sep 2021, BBC News

The real story here is that automatic lawnmowers can't identify hedgehog corpses.