Lifeboat Foundation

In a discovery with wide-ranging implications, researchers at the University of Massachusetts Amherst recently announced in the Proceedings of the National Academy of Sciences that uniformly charged macromolecules—or molecules, such as proteins or DNA, that contain a large number of atoms all with the same electrical charge—can self-assemble into very large structures. This finding upends our understanding of how some of life’s basic structures are built.

Traditionally, scientists have understood charged polymer chains as being composed of smaller, uniformly charged units. Such chains, called polyelectrolytes, display predictable behaviors of self-organization in water: They will repel each other because similarly charged objects don’t like to be close to each other. If you add salt to water containing polyelectrolytes, then molecules coil up, because the chains’ electrical repulsion is screened by the salt.

However, “the game is very different when you have dipoles,” says Murugappan Muthukumar, the Wilmer D. Barrett Professor in Polymer Science and Engineering at UMass Amherst, the study’s senior author.

In the 20th century, many options abounded as to our cosmic origins. Today, only the Big Bang survives, thanks to this critical evidence.

An interdisciplinary team of University of Minnesota Twin Cities scientists and engineers has developed a first-of-its-kind, plant-inspired extrusion process that enables synthetic material growth. The new approach will allow researchers to build better soft robots that can navigate hard-to-reach places, complicated terrain, and potentially areas within the human body.

The paper is published in the Proceedings of the National Academy of Sciences (PNAS), a peer-reviewed, multidisciplinary, high-impact scientific journal.

Continue reading “Engineers discover new process for synthetic material growth, enabling soft robots that grow like plants” »

LAS CRUCES, N.M., May 16, 2022 /PRNewswire/ — In four weeks of continuous live-fire exercises, an industry team led by Raytheon Intelligence & Space, a Raytheon Technologies (NYSE: RTX) business, and Kord, a wholly owned subsidiary of KBR, defeated multiple 60mm mortar rounds with a 50kW-class high energy laser integrated on a Stryker combat vehicle.

The directed energy weapon system — part of the U.S. Army’s Directed Energy Maneuver-Short Range Air Defense, or DE M-SHORAD — acquired, tracked, targeted and defeated multiple mortars and successfully accomplished multiple tests simulating real-world scenarios.

Continuing to put the DE M-SHORAD system to the test, the recent operational assessment at White Sands Missile Range also included defeating several small, medium and large drones.

Aiming to become the world’s largest operator of supersonic aircraft fleet, American Airlines (A1G) (AAL) has signed an agreement with Boom Supersonic for the purchase of what will be the world’s fastest commercial airliners.

American Airlines (A1G) (AAL) committed to purchasing up to 20 Boom Supersonic Overture aircraft with an option for an additional 40 jets, it announced on August 16, 2022. Showing its intent, the Texas-based air carrier said it has already transferred a non-refundable payment to the manufacturer for first 20 planes. However, it did not specify the worth of the recent deal.

According to the terms of the deal, the manufacturer must meet industry-standard operating, performance, and safety requirements, as well as other American Airlines’ (A1G) (AAL) requirements, before any Overture jets are delivered to the airline.

© All Right Reserved Science World 2022

Theme Trend News By WP News Theme

Trapman Bermagui.

Off the coast of New South Wales in Australia, a deep-sea angler who goes by the internet nickname Trapman Bermagui pulled in a strange shark at a depth of about 2,130 feet (650 meters).

Overall, 86 percent of the survey respondents said they’re likely or extremely likely to want to stick with a four-day work week after the trial ends in three months.

Trials of this sort are becoming more popular; Spain, Scotland, Japan, and New Zealand have all looked into or trialed a reduced work week. Before the UK trial, the largest to date took place in Iceland in 2021, and it was broadly considered a success. The 2,500 participants reported decreased stress, increased energy levels, improved focus, more independence and control over their pace of work, and less conflict between their work and home lives. Managers reported boosts in employee morale, with productivity levels maintained if not improved.

Eighty-six percent of Iceland’s working population has subsequently either moved to a shorter work week or been given the option to do so. That’s a high percentage, but a small number compared to most European countries; Iceland’s total population is around 343,000, and it’s a highly equitable society in terms of income.

Hubble last got a visitor during the Shuttle era.