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Controlling molecular electronics with rigid, ladder-like molecules

Controlling molecular electronics with rigid, ladder-like molecules
2024-08-26
As electronic devices continue to get smaller and smaller, physical size limitations are beginning to disrupt the trend of doubling transistor density on silicon-based microchips approximately every two years according to Moore’s law. Molecular electronics—the use of single molecules as the building blocks for electronic components—offers a potential pathway for the continued miniaturization of small-scale electronic devices. Devices that utilize molecular electronics require precise control over the flow of electrical current. However, the dynamic nature of these single molecule components affects device performance and impacts ...

Marine science oxygen produced in the deep sea raises questions about extraterrestrial life

Marine science oxygen produced in the deep sea raises questions about extraterrestrial life
2024-08-26
Over 12,000 feet below the surface of the sea, in a region of the Pacific Ocean known as the Clarion-Clipperton Zone (CCZ), million-year-old rocks cover the seafloor. These rocks may seem lifeless, but nestled between the nooks and crannies on their surfaces, tiny sea creatures and microbes make their home, many uniquely adapted to life in the dark.  These deep-sea rocks, called polymetallic nodules, don’t only host a surprising number of sea critters. A team of scientists that includes Boston University experts has discovered they ...

What microscopic fossilized shells tell us about ancient climate change

What microscopic fossilized shells tell us about ancient climate change
2024-08-26
At the end of the Paleocene and beginning of the Eocene epochs, between 59 to 51 million years ago, Earth experienced dramatic warming periods, both gradual periods stretching millions of years and sudden warming events known as hyperthermals. Driving this planetary heat up were massive emissions of carbon dioxide (CO2) and other greenhouse gases, but other factors like tectonic activity may have also been at play. New research led by University of Utah geoscientists pairs sea surface temperatures with levels ...

Li-ion batteries show promise as cheap and sustainable alternative to Ni/Co materials

Li-ion batteries show promise as cheap and sustainable alternative to Ni/Co materials
2024-08-26
Lithium-ion (or Li-ion) batteries are heavy hitters when it comes to the world of rechargeable batteries. As electric vehicles become more common in the world, a high-energy, low-cost battery utilizing the abundance of manganese (Mn) can be a sustainable option to become commercially available and utilized in the automobile industry. Currently, batteries used for powering electric vehicles (EVs) are nickel (Ni) and cobalt (Co)-based, which can be expensive and unsustainable for a society with a growing desire for EVs. By switching the positive electrode ...

The Lundquist Institute announces updates to its Board of Directors

The Lundquist Institute announces updates to its Board of Directors
2024-08-26
The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center (TLI) announced updates to its Board of Directors today. TLI welcomes one new distinguished member and thanks the two outgoing members for their invaluable contributions. “On behalf of the Board, I am delighted that Dr. Bill Dorfman, a global leader in cosmetic dentistry, has joined the TLI Board. Dr. Dorfman's extensive expertise and commitment to philanthropy make him an invaluable addition to our leadership,” said Mitchel Sayare, PhD, TLI Board ...

Research from UTHealth Houston finds parents who recently experienced intimate partner violence had higher potential for parenting stress and child maltreatment

Research from UTHealth Houston finds parents who recently experienced intimate partner violence had higher potential for parenting stress and child maltreatment
2024-08-26
Parents who recently experienced intimate partner violence reported more parenting stress and higher potential for child maltreatment, and were less likely to use positive parenting strategies, according to UTHealth Houston research published Aug. 26, 2024, in JAMA Pediatrics. “Our findings demonstrate the collateral damage of domestic violence — that the negative consequences are not limited to the couple and instead have the potential to affect how they parent, and ultimately the health of their children. We must expend every effort to prevent this public health problem,” said Jeff Temple, PhD, ...

Research spotlight: Key regulators of pd-1 in melanoma cells and the immune system’s response

2024-08-26
How would you summarize your study for a lay audience?  Immune checkpoint inhibitors are cancer fighting drugs that help the immune system do its job of detecting and attacking tumor cells. Programmed Cell Death 1 (PD-1) is a common target for this type of drug—it is a protein that sits on the surface of T cells and helps regulate the immune system’s response to neighboring cells, both normal and cancerous. While most research efforts to date have focused on PD-1’s role in T cells, it is also active in many other kinds of cells—including cancer cells as first demonstrated by the Schatton ...

Lighting the way for quantum innovation

Lighting the way for quantum innovation
2024-08-26
ALBUQUERQUE, N.M. — Sandia National Laboratories and Arizona State University, two research powerhouses, are collaborating to push the boundaries of quantum technology and transform large-scale optical systems into compact integrated microsystems. Nils Otterstrom, a Sandia physicist specializing in integrated photonics, is at the forefront of scaling down optical systems to the size of a chip. This innovation offers performance advantages and scalability for an array of applications from advanced computing to secure communications. “Integrated ...

Spin squeezing for all

Spin squeezing for all
2024-08-26
Nothing in science can be achieved or understood without measurement. Today, thanks to advances in quantum sensing, scientists can measure things that were once impossible to even imagine: vibrations of atoms, properties of individual photons, fluctuations associated with gravitational waves. A quantum mechanical trick called “spin squeezing” is widely recognized to hold promise for supercharging the capabilities of the world’s most precise quantum sensors, but it’s been notoriously difficult to achieve. In new research, Harvard physicists describe how they’ve put spin squeezing ...

NSF funds research on the effects of evolution and food webs in climate change response

NSF funds research on the effects of evolution and food webs in climate change response
2024-08-26
Colorado State University is leading a new interdisciplinary research project into the ways predators and prey in sensitive ecosystems may react to climate change based on their physiology, genetics and relationships to each other.  Led by Professor Chris Funk in the Department of Biology, the project is funded by the National Science Foundation’s Organismal Response to Climate Change program and will focus on interactions between cutthroat trout and tailed frogs in Pacific Northwest streams. This approach is one of the first times researchers have tried to test both the effects of evolution and ...

Children's Brain Tumor Network hosts 2024 CBTN Summit to transform scientific research and patient care

Childrens Brain Tumor Network hosts 2024 CBTN Summit to transform scientific research and patient care
2024-08-26
What: The 2024 CBTN Summit hosted by the Children's Brain Tumor Network (CBTN) assembles the brightest minds in Pediatric Brian Tumor research for this annual conference. The event is free but attendees must register in advance. Register at network.cbtn.org/cbtn-summit Where: In person at AWS Headquarters Amazon WAS16 Aurora, 1770 Crystal Dr, Arlington, VA 22202 Virtual attendance available worldwide. When: October 9-11, 2024 Why: This event is an opportunity ...

Long-term prognosis of patients with myocarditis attributed to COVID-19 mRNA vaccination, SARS-CoV-2 infection, or conventional etiologies

2024-08-26
About The Study: Patients with post–COVID-19 mRNA vaccination myocarditis, contrary to those with post–COVID-19 myocarditis, show a lower frequency of cardiovascular complications than those with conventional myocarditis at 18 months. However, affected patients, mainly healthy young men, may require medical management up to several months after hospital discharge. Corresponding Authors: To contact the corresponding authors, email Laura Semenzato, MSc (laura.semenzato@assurance-maladie.fr) and Mahmoud Zureik, MD, PhD (Mahmoud.ZUREIK@ansm.sante.fr). To access the embargoed study: Visit our For The ...

LZ experiment sets new record in search for dark matter

LZ experiment sets new record in search for dark matter
2024-08-26
Figuring out the nature of dark matter, the invisible substance that makes up most of the mass in our universe, is one of the greatest puzzles in physics. New results from the world’s most sensitive dark matter detector, LUX-ZEPLIN (LZ), have narrowed down possibilities for one of the leading dark matter candidates: weakly interacting massive particles, or WIMPs. LZ, led by the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), hunts for dark matter from a cavern nearly one mile underground at the Sanford Underground Research Facility in South Dakota. The experiment’s new results explore weaker dark matter interactions ...

Astrophysicists use AI to precisely calculate universe’s ‘settings’

Astrophysicists use AI to precisely calculate universe’s ‘settings’
2024-08-26
The standard model of the universe relies on just six numbers. Using a new approach powered by artificial intelligence, researchers at the Flatiron Institute and their colleagues extracted information hidden in the distribution of galaxies to estimate the values of five of these so-called cosmological parameters with incredible precision. The results were a significant improvement over the values produced by previous methods. Compared to conventional techniques using the same galaxy data, the approach yielded less than half ...

SETI Institute starts first low frequency search for alien technology in distant galaxies

SETI Institute starts first low frequency search for alien technology in distant galaxies
2024-08-26
August 26, 2024, Mountain View, CA -- The SETI Institute, the Berkeley SETI Research Center and the International Centre for Radio Astronomy Research announced a groundbreaking study using the Murchison Widefield Array (MWA) in Western Australia. Led by Dr. Chenoa Tremblay of the SETI Institute and Prof. Steven Tingay of Curtin University, this research is the first to search for signs of alien technology in galaxies beyond our own, focusing on low radio frequencies (100 MHz). This innovative study used the MWA’s large field of view (FOV), allowing the team to cover about 2,800 galaxies in one observation, of which 1300 we know the distance to. Usually, the search for extraterrestrial ...

Bicycle rolling-stop laws don’t lead to unsafe behavior by riders or motorists, research shows

Bicycle rolling-stop laws don’t lead to unsafe behavior by riders or motorists, research shows
2024-08-26
CORVALLIS, Ore. – Laws that let bicyclists treat stop signs as yield signs lead neither riders nor motorists to act unsafely, according to a groundbreaking Oregon State University study. The project by OSU College of Engineering researchers featured a novel experimental technique – linking separate bicycle and motor vehicle simulators – and the findings are important as more and more states consider bicycle rolling-stop legislation, said David Hurwitz, the study’s leader. “It required fully connecting two independent simulators, running subjects in pairs simultaneously and having each subject interacting with an avatar of the other in a shared virtual ...

How a retracted paper affected the course of Alzheimer’s research (video)

How a retracted paper affected the course of Alzheimer’s research (video)
2024-08-26
WASHINGTON, Aug. 26, 2024 — In June 2024, a landmark Alzheimer's research paper was retracted due to fraud allegations. Did we waste billions of dollars and thousands of hours of scientists’ time? Maybe not. There are now two potentially helpful drugs on the market targeting the subject of the paper: amyloid beta. This video breaks down the amyloid-beta hypothesis, the fraud itself and where we go from here. Reactions is a video series produced by the American Chemical Society and PBS Digital Studios. Subscribe to Reactions and follow us on X, formerly Twitter @ACSReactions. The American Chemical ...

Genotype Matters: Tailored screening for germline CHEK2 variants

Genotype Matters: Tailored screening for germline CHEK2 variants
2024-08-26
“In our study, we postulated that these differences were driven by three common low-risk (LR) missense variants: p.I157T, p.S428F, and p.T476M, all of which have a BC odds ratio of <1.4.” BUFFALO, NY- August 26, 2024 – A new editorial was published in Oncotarget's Volume 15 on July 10, 2024, entitled, “Genotype matters: Personalized screening recommendations for germline CHEK2 variants.” Recognized as a moderate-risk gene, CHEK2—responsible for encoding the CHK2 protein, ...

Interlimb and intralimb synergy modeling for lower limb assistive devices: Modeling methods and feature selection

Interlimb and intralimb synergy modeling for lower limb assistive devices: Modeling methods and feature selection
2024-08-26
A research paper by scientists at Hainan University proposed FSS-eq2Seq as a 2-stage strategy for gait synergy modeling in lower limb assistive devices to achieve synergic and user-adaptive trajectories that improve human-machine interactions. The new research paper, published on Jul. 03 in the journal Cyborg and Bionic Systems, indicatedSeq2Seq outperforms LSTM, RNN, and GRU in both interlimb and intralimb synergy modeling. Further, FS significantly improves Seq2Seq’s modeling performance. The concept of gait synergy provides novel human-machine interfaces and has been applied ...

Darwin’s fear was unjustified: Writing evolutionary history by bridging the gaps

2024-08-26
Fossils are used to reconstruct evolutionary history, but not all animals and plants become fossils and many fossils are destroyed before we can find them (e.g., the rocks that contain the fossils are destroyed by erosion). As a result, the fossil record has gaps and is incomplete, and we’re missing data that we need to reconstruct evolutionary history. Now, a team of sedimentologists and stratigraphers from the Netherlands and the UK examined how this incompleteness influences the reconstruction of evolutionary history. To their surprise, they found that the incompleteness itself is actually not such a big issue. “It’s ...

Trends of heat-related deaths in the US, 1999-2023

2024-08-26
About The Study: This study found that heat-related mortality rates in the U.S. increased between 1999 and 2023, especially during the last 7 years. Although a study using data through 2018 found a downward trend in heat-related mortality in the U.S., this study is the first to our knowledge to demonstrate a reversal of this trend from 2016 to 2023. These results align with site-specific data analyzed in a global study that suggest increases in heat-related mortality. As temperatures continue to rise because of climate change, the recent increasing trend is likely to continue. Local authorities in high-risk areas should consider investing in the expansion of access to hydration centers ...

Transgender students more likely than cisgender peers to seek support from school staff, UW–Madison and NYU study finds

2024-08-26
MADISON – Transgender students are more likely to seek support from school staff and less likely to seek support from their parents when compared to their cisgender peers, according to a new study from researchers at the University of Wisconsin–Madison and New York University.   The study, published in JAMA Pediatrics, found among students who felt depressed or anxious, transgender students were 74% less likely than their cisgender peers to seek help from parents than from adults in schools. It also found transgender students were 25% less likely than cisgender students to seek support from ...

Longitudinal changes in youth mental health from before to during the COVID-19 pandemic

2024-08-26
About The Study: In this longitudinal cohort study of economically and racially diverse U.S. youth, there was evidence of differential susceptibility and resilience for mental health problems during the pandemic that was associated with prepandemic mental health and sociodemographic characteristics. These differences are critical to understand for recovery and may yield novel insights into causes of youth mental health problems.  Corresponding Authors: To contact the corresponding authors, email Courtney ...

Repetitive head impacts and perivascular space volume in former football players

2024-08-26
About The Study: In this cross-sectional cohort study of 170 former football players and 54 unexposed controls, larger perivascular space (PVS) volume was associated with greater exposure to repetitive head impacts (RHI). Additionally, PVS volume was associated with worse performance on cognitive tests. These findings suggest that PVS volume may contribute to the association between exposure to RHI, cognitive impairment, and the development of RHI-associated neurodegeneration.  Corresponding Author: To contact the corresponding ...

Sharing expands caring – UMD study finds solution to a major source of doctor burnout

Sharing expands caring – UMD study finds solution to a major source of doctor burnout
2024-08-26
COLLEGE PARK, Md. – Who hasn’t sat in a medical office, listening to computer keys clacking while their provider rapidly types up notes, wondering what they are spending so much time writing about? For doctors, who have always written clinical care notes but increasingly must spend time cataloging billing details, this additional documentation is a major source of job dissatisfaction and burnout. A new study out today by University of Maryland’s School of Public Health illuminates a solution that can meaningfully reduce the amount of time doctors spend writing notes, without losing vital information. “Providers are already stretched thin and under intense pressure to ...
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