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  • richardmitnick 12:47 pm on September 4, 2019 Permalink | Reply
    Tags: , Building the new soft electronics will require a new class of materials that exhibits high conductivity while also remaining chemically and mechanically compatible with the host matrix., , National Science Foundation, Soft nanoelectronic composites are critical to advancing fields such as wearable devices; soft robotics; and personalized healthcare., The conductive protein nanowires exhibit highly tunable conductivity while remaining significantly softer than carbon nanotubes or noble metals such as gold., The new devices will use conductive protein nanowires-or pili- that will function as the conductive element of the protein-based soft electronics., The scientists plan to use conductive protein nanowires and mechanically soft nanomaterials to create a new nanocomposite that is strong flexible and highly conductive., They disperse evenly in water while nanotubes and metals clump together.,   

    From UMass Amherst: “UMass Amherst Researchers Awarded $1.75-million in NSF Funding to Study and Develop New Class of Soft Electronics” 

    U Mass Amherst

    From UMass Amherst

    September 4, 2019
    Stephen S. Nonnenmann

    Soft stretchable electronic device

    New devices will exhibit both flexibility and high conductivity.

    A team of researchers at the University of Massachusetts Amherst has received a four-year, $1.75 million grant from the National Science Foundation (NSF) to study and construct soft stretchable electronic devices that can be used in future healthcare, security and communications applications.

    The scientists plan to use conductive protein nanowires and mechanically soft nanomaterials to create a new nanocomposite that is strong, flexible and highly conductive.

    The interdisciplinary research team is led by Stephen S. Nonnennman, associate professor of mechanical and industrial engineering, and includes Todd S. Emrick, professor of polymer science and engineering, Derek R. Lovley, Distinguished Professor of microbiology, and Jessica D. Schiffman, associate professor of chemical engineering. All four faculty members are affiliated with the Institute of Applied Life Sciences (IALS), which combines deep and interdisciplinary expertise from 29 departments on the UMass Amherst campus to translate fundamental research into innovations that benefit humankind.

    Soft nanoelectronic composites are critical to advancing fields such as wearable devices, soft robotics, and personalized healthcare. “The conductive protein nanowires exhibit highly tunable conductivity while remaining significantly softer than carbon nanotubes or noble metals such as gold,” says Nonnenmann. “The second key point is that they disperse evenly in water, while nanotubes and metals clump together. These two factors really make pili-polymer nanocomposite pairings particularly exciting to explore and manufacture.”

    The NSF Designing Materials to Revolutionize and Engineer our Future (DMREF) program is related to the national Materials Genome Initiative (MGI) which aims to “deploy advanced materials at least twice as fast as possible today, at a fraction of the cost.” MGI integrates experimental materials discovery with computational design. The DMREF team also includes Arthi Jayaraman, professor of chemical engineering and materials science at the University of Delaware, a world-renowned authority on computational studies of molecular-level phenomena. Together, their work “has the potential to bring the U.S. to the forefront of flexible electronics development, while training the next generation workforce to maintain this competitive advantage.”

    Building the new soft electronics will require a new class of materials that exhibits high conductivity while also remaining chemically and mechanically compatible with the host matrix. Current stretchable electronics use thin, hard and brittle conductive materials such as metal nanowires or carbon nanotubes embedded in stretchable elastic polymers, but they often fail because of the mechanical mismatch between the materials. The new devices will use conductive protein nanowires, or pili, that will function as the conductive element of the protein-based soft electronics.

    The team will leverage their collective expertise to design and develop protein nanowire-matrix pairings that are both highly functional and easily manufactured. Development of such structures will pair molecular modeling (Jayaraman) with synthetic biology (Lovley) to determine amino acid sequences that not only provide conductivity, but also anchor points to integrate into the polymer matrices (Emrick) and flexible fabrics (Schiffman) developed in parallel. Nonnenmann will evaluate their electronic-mechanical functionality using advanced microscopy and transport methods, thus forming a computational-synthetic-experimental feedback loop across the team. The goal of advantageously combining new synthetic polymers with these biologically derived protein nanowires is both intellectually challenging and vital to making advances in this bioelectronics field.

    See the full article here .


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    U Mass Amherst campus

    UMass Amherst, the Commonwealth’s flagship campus, is a nationally ranked public research university offering a full range of undergraduate, graduate and professional degrees.

    As the flagship campus of America’s education state, the University of Massachusetts Amherst is the leader of the public higher education system of the Commonwealth, making a profound, transformative impact to the common good. Founded in 1863, we are the largest public research university in New England, distinguished by the excellence and breadth of our academic, research and community outreach programs. We rank 29th among the nation’s top public universities, moving up 11 spots in the past two years in the U.S. News & World Report’s annual college guide.

  • richardmitnick 2:59 pm on January 12, 2019 Permalink | Reply
    Tags: Department of Agriculture, Environmental Protection Agency, Fish and Wildlife Service, Food and Drug Administration, Here’s how the record-breaking government shutdown is disrupting science, Indian Health Service, , National Oceanic and Atmospheric Administration, National Parks Service, National Radio Astronomy Observatory, National Science Foundation, National Weather Service, , U.S. Geological Survey   

    From Science News: “Here’s how the record-breaking government shutdown is disrupting science” 

    From Science News

    January 12, 2019
    Laurel Hamers

    The shutdown is forcing scientists to cancel presentations and halt research.

    TEMPORARY WORKAROUND For now, the National Radio Astronomy Observatory based in Charlottesville, Va., shown here closed during a 2013 government shutdown, is still open, funded by money left over from 2018. But if the current shutdown doesn’t end soon, it may be forced to close again. Emily Barney/Flickr (CC BY-NC 2.0)

    As the partial federal government shutdown enters its fourth week — on January 12 becoming the longest in U.S. history — scientists are increasingly feeling the impact. Thousands of federal workers who handle food safety and public health are furloughed. Countless projects researching everything from climate change to pest control to hurricane prediction are on hold.

    Among government agencies hit by the partial shutdown are the U.S. Geological Survey, the Department of Agriculture, the National Oceanic and Atmospheric Administration, the Environmental Protection Agency and NASA, where nearly all employees are on leave. Additionally, 40 percent of the Food and Drug Administration’s 14,000 workers are furloughed, as are most employees of the National Parks Service and the Fish and Wildlife Service.

    Meanwhile, the National Science Foundation, responsible for doling out nearly $8 billion in research funds each year, has stopped awarding grants and has canceled review panels with outside scientists that are part of the process. In 2018, NSF gave out $42 million in grants from January 1 through January 8, but this year, nothing has been funded so far, Benjamin Corb of the American Society for Biochemistry and Molecular Biology noted in a statement January 8. Such stalled funding is leading to a backlog that could slow down approvals long beyond the shutdown. Here are some of the consequences of delaying government research, and how some scientists are trying to cope.

    Public safety

    Both the National Institutes of Health and the Centers for Disease Control and Prevention remain funded and operational. Flu surveillance is still being funded through the CDC. Medicare and Medicaid insurance programs are also safe.

    But other agencies working to protect public health have scaled back operations. The Indian Health Service, which funds care for Native Americans, is in limbo. Health clinic employees are working without pay, while some grants and programs are on hold.

    The USDA is still inspecting meat, dairy and poultry products. But routine FDA inspections of produce are suspended, increasing the possibility of a foodborne illness outbreak. Given that worry, the agency hopes to resume inspections of high-risk facilities prone to outbreaks, FDA commissioner Scott Gottlieb told the Washington Post.

    PRODUCE PROBLEMS During the shutdown, the U.S. Food and Drug Administration hasn’t been carrying out routine inspections of produce, upping the risk for a foodborne illness outbreak. Caroline Attwood/Unsplash

    Weather forecasts have become less accurate, with the National Weather Service’s key prediction tool not working correctly and no one around to fix it, the Washington Post also reported, citing Suru Saha of the National Weather Service’s Environmental Modeling Center in College Park, Md.

    Meanwhile, work to improve hurricane models by adding the latest in physics and data isn’t happening, forecaster Eric Blake at the National Weather Service’s National Hurricane Center in Miami told Scientific American.

    Environment damage

    EPA employees policing industry compliance with laws restricting air and water pollution are on leave, and work to clean up Superfund sites, areas of extreme environmental contamination, is suspended. That means any research into the potential health or environmental effects of new contaminants is on hold.

    POLLUTION UNPATROLLED The U.S. Environmental Protection Agency officials who hold companies accountable for complying with pollution regulations, as well as those who work on Superfund sites like the Gowanus Canal in New York (shown here), aren’t working right now. nicolecioe/iStock.com

    National parks are also in disarray, with few rangers to control crowds or enforce sanitation rules or regulations against environmental damage. Visitors wanting to drive off-road through the California desert cut down protected Joshua trees to clear a path in Joshua Tree National Park, park superintendent David Smith told National Parks Traveler. It can take years for desert soils and slow-growing Joshua trees to recover from such damage.

    PARK PLUNDERED National parks have remained open during the partial shutdown. But with only a few rangers on duty, visitors have caused long-term damage to some, such as Joshua Tree National Park in California, where trees have been cut down for off-roading. Frank DeBonis/iStock.com

    Information access

    Scientists aren’t able to gather data from government websites that are not being updated or are now offline. That’s hurt climate scientist Angeline Pendergrass’ work building computer models at the National Center for Atmospheric Research in Boulder, Colorado, to predict how climate change will impact rainfall patterns.

    Pendergrass normally verifies her calculations against precipitation records housed in the Global Historical Climatology Network, which logs global temperature and rainfall measurements. But while those data are still being collected automatically, the data aren’t available as usual through NOAA. Pendergrass’ project was stalled for days until she found a workaround to access the data in a different way.

    “I worry a lot about missing observations” from monitoring equipment malfunctions, Pendergrass says, which could mess up her research.

    Her concerns are well-founded. About 10 percent of contributing U.S. weather stations appear to be offline, lead scientist Robert Rohde at Berkeley Earth, an independent group for scientific analysis based in Berkeley, Calif., tweeted. And data from “a large number of foreign stations are also not being merged into the archive,” he wrote.

    Animals in USDA facilities are still being cared for, but scientists can’t collect data or do experiments. Interruptions in animal research involving steps being taken at certain times — like cows that need to be bred at a certain age — can set researchers back months or even years.

    Scientific collaboration

    During the shutdown, federal scientists can’t attend scientific meetings — important arenas for sharing new research. Already, government scientists have missed key conferences on astronomy, biology, weather and agricultural science.

    More than 10 percent of planned participants at the American Astronomical Society meeting that just wrapped up on January 10 in Seattle had to cancel presentations, AAS spokesman Rick Fienberg says. Some were able to ask coauthors to take their place; astrophysicist Jane Rigby at NASA’s Goddard Space Flight Center was not one of them.

    Rigby had to abandon her planned talks about the James Webb Space Telescope because nobody outside of the U.S. space agency had the expertise to cover for her. “This is the Super Bowl of astronomy, and we’re not allowed to play,” she says. “It’s not even like we’re benched. We’re not even allowed in the stadium.”

    Hundreds of USDA employees have also pulled out of the San Diego meeting of the International Plant & Animal Genome that starts January 12, says conference co-organizer Alison Van Eenennaam, an agricultural genomicist at the University of California, Davis.

    Because future research priorities are decided at such conferences, she says, the cancelations “will have implications for the whole year’s research.”

    One of Van Eenennaam’s graduate students relies on a USDA computer server to run a simulation program for research that’s needed to complete her degree. She isn’t allowed to access it right now, so the planned updates to make the program more suitable to the project’s needs also aren’t happening.

    “She’s stuck,” Van Eenennaam says.

    Timely research

    Some scientists can ride out any funding delays. But for those working on projects that are time sensitive, the halt in funding approvals threatens to throw off an entire year of work.

    Physiologist Hannah Carey is still waiting for this year’s money to come in for her research at the University of Wisconsin–Madison on ground squirrel hibernation. Because hibernating animals endure extreme changes in body temperature and heart rate, studying how they cope could help scientists understand how human bodies deal with trauma or extreme conditions.

    GOING DORMANT Hannah Carey of the University of Wisconsin–Madison studies hibernation in ground squirrels. But because of the shutdown, her grant money for the year hasn’t arrived yet. Rob Streiffer

    See the full article here .


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  • richardmitnick 11:02 am on October 18, 2017 Permalink | Reply
    Tags: A seaweed protein that seems to be active against the H1N1 flu, , , Charting the movement of king crabs up the Antarctic Slope as ocean temperatures rise, Hearing scientists talk about how climate change is threatening the breathtaking landscape and wildlife can bring people to tears, , National Science Foundation, , Palmer Station, Science at Antarctica, The discovery of chemicals contained in seaweed and sponges that may hold promise for treatment of melanoma and the deadly MRSA bacterium that is resistant to many antibiotics, The discovery of the ozone hole over Antarctica in the 1980s when scientists released a paper detailing how the protective layer between earth and the sun was thinning, , You don’t come back from Antarctica the same way you left   

    From UCSC: “Into the heart of a frozen continent” James McClintock 

    UC Santa Cruz

    UC Santa Cruz

    October 17, 2017
    Peggy Townsend

    James McClintock has made 15 journeys to Antarctica.

    Looking through a three-foot-wide dive hole into the frigid blue waters of Antarctica, James McClintock saw something he’d never witnessed before. A passing shrimp-like amphipod appeared to be carrying a tiny orange pack on its back.

    Intrigued, McClintock, then a young assistant professor of polar and marine biology at the University of Alabama at Birmingham, scooped up the creature and took it back to the lab at McMurdo Station where he and a fish biologist teased the pack from the creature’s back.

    To their stunned surprise, the orange pack opened up and flew away.

    The tiny sea butterfly, which had been captured and held by the amphipod, turned out to contain an unpalatable chemical that kept the crustacean from becoming lunch for some hungry fish. Its discovery not only landed McClintock in the pages of the prestigious journal Nature but also launched a career that has made him a something of scientific rock star.

    McClintock (biology, ’78, Cowell) has published 265 scientific papers, written two books, spoken about his work in front of 1,000 people at a Moth storytelling event at Lincoln Center in New York City, and had a point in McMurdo Sound in Antarctica named after him by the U.S. Board of Geographic Names in honor of his work. More importantly, his research in Antarctica has included studies on ocean acidification, the effects of climate change on marine life, and the discovery of chemicals contained in seaweed and sponges that may hold promise for treatment of melanoma and the deadly MRSA bacterium that is resistant to many antibiotics.

    If not for two professors at UC Santa Cruz, his story might have been very different.

    Arriving at the wooded campus from Santa Barbara with the idea of studying English, McClintock remembers becoming intrigued when a Cowell College core course in biology turned to talk of marine invertebrates. He soon signed up for an invertebrate zoology course taught by John Pearse and Todd Newberry, now both emeritus professors in the department of ecology and evolutionary biology, which focused on these amazing and adaptable creatures.

    As McClintock tells it, “John is this amazing teacher who has a way of grabbing you by the soul.”

    Pearse, for his part, recommended that McClintock spend a semester at a UC marine research lab in Bodega Bay studying sea stars and sea urchins.

    “Jim was a self-starter,” remembers Pearse, who later invited McClintock to accompany him to Antarctic as a post-doctoral researcher. “He was very curious and outgoing.”

    But if Pearse grabbed McClintock’s soul, Antarctica took his heart. He’s been there 15 times as a researcher and 10 times as lead lecturer for an annual philanthropic cruise focused on climate change organized by the ship line, Abercrombie and Kent. Listen to him talk by phone from his campus office in Birmingham and his description of Antarctica is close to poetic.

    “The scale of the landscape is absolutely stunning,” he says. Mountain ranges that appear close enough to touch are actually hundreds of miles away. The sea surface, glassy and calm one minute, can be lifted into the air by hurricane-force winds a few moments later, while the ice is alive with unimaginable shades of blue and green.

    “You don’t come back from Antarctica the same way you left,” he says.

    His research trips, the last 25 years of which have been funded with grants from the National Science Foundation, have included a collaboration with Bill Baker, a marine natural products chemist from the University of South Florida, and Charles Amsler, a seaweed biologist also from the University of Alabama at Birmingham.

    Working out of remote Palmer Station, the trio has focused on defense mechanisms developed by invertebrates and seaweed involving chemicals that are unpalatable and sometimes toxic to their predators. The research also has had implications for drug development including the discovery of a substance in sea squirts that appears to fight melanoma and a seaweed protein that seems to be active against the H1N1 flu, which sparked a 2009 pandemic. Most recently, the group found a compound in an Antarctic sponge that could help in the treatment of a specific type of the deadly MRSA bacteria.

    Meanwhile, McClintock, along with his colleague Richard Aronson at the Florida Institute of Technology, is also charting the movement of king crabs up the Antarctic Slope as ocean temperatures rise. The arrival of these claw-equipped predators on the Antarctic Shelf could cause incredible damage to a pristine sea floor where rare invertebrates like sponges and anemones thrive, he says.

    But if the excitement of discovery is what brings McClintock back to Antarctica, it is the rapid changes he’s witnessed there makes him worry for our future.

    He’s studied the impacts of ocean acidification and watched a glacier that used to calve once a week now release chunks of ice four to five times a day, he says.

    “You can look across from Palmer (Station) and see the ghost rookeries where, 45 years ago, there were 15,000 breeding pairs” of Adélie penguins, says McClintock by telephone from Birmingham where he is now an endowed university professor of polar and marine biology. “Now there are 1,500 breeding pairs, which means 90 percent are gone, and we know very confidently it is because of climate change.”

    The seabirds, he explains, lay their eggs the same week each year but because of climate change, unseasonable snowstorms sometimes bury the colony and when the snow melts, the penguin eggs and chicks drown.

    That’s one of the reasons, he says, he has shepherded 200 well-heeled cruise-ship passengers to the Antarctic each year for the past decade.

    Experiencing a beach filled with a mass of penguins that have no fear of humans and will often wander up to inspect their two-legged visitors, seeing humpbacks surface, and hearing scientists talk about how climate change is threatening the breathtaking landscape and wildlife can bring people to tears, he says.

    “These people go home as ambassadors for Antarctica. They talk to senators and politicians about climate change,” McClintock says.

    That outreach has made him understand the importance of scientists letting their voices be heard. He helped start a website, UAB in Antarctica, which allows lay people an up-close look at scientific research; has traveled across the country speaking to students from third grade to college, and has lectured in front of groups including the famed Explorers Club. In fact, he says, since the United States pulled out of the Paris Accord, which laid out a plan to reduce greenhouse gas emissions, his requests for climate-change talks have increased.

    Yet, his message, he says, is also hopeful.

    He likes to tell the story of the discovery of the ozone hole over Antarctica in the 1980s, when scientists released a paper detailing how the protective layer between earth and the sun was thinning.

    “What I like to tell people is that within several years of one of the most important papers of the 20th century,” McClintock says, “we had 20 countries sitting around a table in Montreal and they OK’d the Montreal Protocol” which phased out products that were harmful to the ozone layer. The treaty has now been ratified by 197 parties.

    Last year, McClintock says, a new paper showed that rather than expanding, the ozone hole is shrinking.

    “That’s what I leave audiences with,” McClintock says. “That maybe we can get together and figure this out after all.”

    See the full article here .

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    UCO Lick Shane Telescope
    UCO Lick Shane Telescope interior
    Shane Telescope at UCO Lick Observatory, UCSC

    Lick Automated Planet Finder telescope, Mount Hamilton, CA, USA

    Lick Automated Planet Finder telescope, Mount Hamilton, CA, USA

    UC Santa Cruz campus
    The University of California, Santa Cruz, opened in 1965 and grew, one college at a time, to its current (2008-09) enrollment of more than 16,000 students. Undergraduates pursue more than 60 majors supervised by divisional deans of humanities, physical & biological sciences, social sciences, and arts. Graduate students work toward graduate certificates, master’s degrees, or doctoral degrees in more than 30 academic fields under the supervision of the divisional and graduate deans. The dean of the Jack Baskin School of Engineering oversees the campus’s undergraduate and graduate engineering programs.

    UCSC is the home base for the Lick Observatory.

    Lick Observatory's Great Lick 91-centimeter (36-inch) telescope housed in the South (large) Dome of main building
    Lick Observatory’s Great Lick 91-centimeter (36-inch) telescope housed in the South (large) Dome of main building

    Search for extraterrestrial intelligence expands at Lick Observatory
    New instrument scans the sky for pulses of infrared light
    March 23, 2015
    By Hilary Lebow
    The NIROSETI instrument saw first light on the Nickel 1-meter Telescope at Lick Observatory on March 15, 2015. (Photo by Laurie Hatch) UCSC Lick Nickel telescope

    Astronomers are expanding the search for extraterrestrial intelligence into a new realm with detectors tuned to infrared light at UC’s Lick Observatory. A new instrument, called NIROSETI, will soon scour the sky for messages from other worlds.

    “Infrared light would be an excellent means of interstellar communication,” said Shelley Wright, an assistant professor of physics at UC San Diego who led the development of the new instrument while at the University of Toronto’s Dunlap Institute for Astronomy & Astrophysics.

    Wright worked on an earlier SETI project at Lick Observatory as a UC Santa Cruz undergraduate, when she built an optical instrument designed by UC Berkeley researchers. The infrared project takes advantage of new technology not available for that first optical search.

    Infrared light would be a good way for extraterrestrials to get our attention here on Earth, since pulses from a powerful infrared laser could outshine a star, if only for a billionth of a second. Interstellar gas and dust is almost transparent to near infrared, so these signals can be seen from great distances. It also takes less energy to send information using infrared signals than with visible light.

    UCSC alumna Shelley Wright, now an assistant professor of physics at UC San Diego, discusses the dichroic filter of the NIROSETI instrument. (Photo by Laurie Hatch)

    Frank Drake, professor emeritus of astronomy and astrophysics at UC Santa Cruz and director emeritus of the SETI Institute, said there are several additional advantages to a search in the infrared realm.

    “The signals are so strong that we only need a small telescope to receive them. Smaller telescopes can offer more observational time, and that is good because we need to search many stars for a chance of success,” said Drake.

    The only downside is that extraterrestrials would need to be transmitting their signals in our direction, Drake said, though he sees this as a positive side to that limitation. “If we get a signal from someone who’s aiming for us, it could mean there’s altruism in the universe. I like that idea. If they want to be friendly, that’s who we will find.”

    Scientists have searched the skies for radio signals for more than 50 years and expanded their search into the optical realm more than a decade ago. The idea of searching in the infrared is not a new one, but instruments capable of capturing pulses of infrared light only recently became available.

    “We had to wait,” Wright said. “I spent eight years waiting and watching as new technology emerged.”

    Now that technology has caught up, the search will extend to stars thousands of light years away, rather than just hundreds. NIROSETI, or Near-Infrared Optical Search for Extraterrestrial Intelligence, could also uncover new information about the physical universe.

    “This is the first time Earthlings have looked at the universe at infrared wavelengths with nanosecond time scales,” said Dan Werthimer, UC Berkeley SETI Project Director. “The instrument could discover new astrophysical phenomena, or perhaps answer the question of whether we are alone.”

    NIROSETI will also gather more information than previous optical detectors by recording levels of light over time so that patterns can be analyzed for potential signs of other civilizations.

    “Searching for intelligent life in the universe is both thrilling and somewhat unorthodox,” said Claire Max, director of UC Observatories and professor of astronomy and astrophysics at UC Santa Cruz. “Lick Observatory has already been the site of several previous SETI searches, so this is a very exciting addition to the current research taking place.”

    NIROSETI will be fully operational by early summer and will scan the skies several times a week on the Nickel 1-meter telescope at Lick Observatory, located on Mt. Hamilton east of San Jose.

    The NIROSETI team also includes Geoffrey Marcy and Andrew Siemion from UC Berkeley; Patrick Dorval, a Dunlap undergraduate, and Elliot Meyer, a Dunlap graduate student; and Richard Treffers of Starman Systems. Funding for the project comes from the generous support of Bill and Susan Bloomfield.

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