When something bad happens to a child, the public and policy response is swift and forceful. How could this have happened? What went wrong? What do we do to make sure it never happens again? When a family becomes erroneously or unnecessarily enmeshed in the child welfare system, that burden is largely invisible - a burden borne mostly by the family itself. In both situations, the fault for the systemic failure is often placed on the caseworker - overburdened, under-resourced, and forced to make quick and critical judgments about the risk ...

In a new paper published in Light Science & Application, the group led by Professor Andrea Fratalocchi from Primalight Laboratory of the Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Saudi Arabia, introduced a new patented, scalable flat-optics technology manufactured with inexpensive semiconductors. The KAUST-designed technology leverages on a previously unrecognized aspect of optical nanoresonators, which are demonstrated to possess a physical layer that is completely equivalent to a feed-forward deep neural network. "What we have achieved," explains Fratalocchi, "is a ...

Obtaining a precise understanding of magnetic structures is one of the main objectives of solid-state physics. Significant research is currently being undertaken in this field, the aim being to develop future data processing applications that use tiny magnetic structures as information carriers. Physicists at Johannes Gutenberg University Mainz (JGU) and the Helmholtz Institute Mainz (HIM) recently presented a new method for investigating magnetic structures combining two different techniques. This allows to measure and map the magnetization as well as the magnetic ...

For ice, so-called "surface melting" was postulated as early as the 19th century by Michael Faraday: Already below the actual melting point, i.e. 0 °C, a thin liquid film forms on the free surface because oft he interface between ice and air. Scientists led by Markus Mezger, group leader at the Max Planck Institute for Polymer Research (department of Hans-Jürgen Butt) and professor at the University of Vienna, have now studied this phenomenon in more detail at interfaces between ice and clay minerals. In nature, this effect is particularly interesting in permafrost soils - i.e. soils that are permanently frozen. About a quarter of the land area ...

The efficient provision of medical care is integral to society. Over time, the healthcare industry has tapped into modern technology in order to keep up its quality of service. This has, unsurprisingly, led to huge volumes of patient data. But it's not just patients whose data need to be stored; doctors, physicians, clinical staff, and even smart wearable gadgets are contributing to what is coming to be known as "healthcare big data." Big data analytics (BDA), which involves the use of special design architectures to manage, store, and analyze complex data, is an important tool in healthcare. But it is hard to implement, owing to its high failure rate, resource-intensive process, and--most importantly--a lack of a clear guideline to aid practitioners. ...

Light microscopes have revolutionized our understanding of the microcosmos, but their resolution is limited to about 100 nanometers. To see how molecules bond, break, or change their structure, we need at least 1000 times better resolution. Laser induced electron diffraction (LIED) is a technique which allows to pinpoint the individual atoms inside a single molecule, and to see where each atom moves when the molecule undergoes a reaction. This technique proved to be an amazing tool for the imaging molecules, such as water, carbonyl sulfide or carbon disulfide. However, using a strong laser field to generate the electron diffraction presented challenges in retrieving the exact structure, since the structural resolution depended on exact knowledge of the ...

New Haven, Conn. -- Mailing a package of SARS-CoV-2 tests to every household in America and asking people to use them once a week could greatly reduce total infections and mortality at a justifiable cost, a new study led by the Yale School of Public Health finds. The research, published today in Annals of Internal Medicine, considers rapid antigen tests that warn people, in real-time, that they are potentially contagious and that they should isolate themselves before unknowingly spreading the disease to others. Investigators, led by Professor A. David Paltiel, assembled data on the epidemiology of SARS-CoV-2 and the natural history of COVID-19. They then used a mathematical model to estimate how many infections, hospitalizations, and deaths could be averted - and at what cost - by providing ...

As much as a year's worth of past academic progress made by disadvantaged children in the Global South may have been wiped out by school closures during the COVID-19 pandemic, researchers have calculated. The research, by academics from the University of Cambridge and RTI International, attempts to quantify the scale of learning loss that children from poor and marginalised communities in the Global South may have experienced, and the extent to which home support and access to learning resources could ameliorate it. While it is known that the education of these children has suffered disproportionately during the pandemic, it is much harder to measure exactly how much their academic progress has ...

Women with polycystic ovary syndrome (PCOS) are at a significantly increased risk of contracting COVID-19 than women without the condition, new research led by the University of Birmingham has revealed. Researchers are now calling for healthcare policy to specifically encourage women with PCOS to adhere to COVID-19 infection control measures while the global pandemic continues. Polycystic ovary syndrome (PCOS) is a common condition affecting around one in 10 women in the UK. The three main symptoms are irregular periods, high levels of "male" hormones which may cause physical signs such as excess facial or body hair, and a cystic appearance on an ultrasound or MRI scan of the ovaries which is caused by follicles becoming increasingly fluid filled as they fail to develop and ...

Researchers at Charité - Universitätsmedizin Berlin and TU Berlin as well as the University of Oslo have developed a new tissue-section analysis system for diagnosing breast cancer based on artificial intelligence (AI). Two further developments make this system unique: For the first time, morphological, molecular and histological data are integrated in a single analysis. Secondly, the system provides a clarification of the AI decision process in the form of heatmaps. Pixel by pixel, these heatmaps show which visual information influenced the AI decision process and to what extent, thus enabling doctors to understand and assess the plausibility of the results of the AI analysis. This represents ...

People with unhealthy heart structures and poorer functioning hearts have a significantly higher risk of being diagnosed with COVID-19 infection, according to research by Queen Mary University of London, in collaboration with the Medical Research Council Lifecourse Epidemiology Unit (The University of Southampton). The researchers made use of the comprehensive and internationally unique UK Biobank database, which includes health and genetic information from over half a million participants from across the UK, including detailed magnetic resonance imaging (MRI) of their hearts as well as linkages to COVID-19 test results from Public Health England. The team investigated records from 310 Biobank participants to see whether pre-existing features of the heart ...

In light of the United Nations (UN) declaration that 2021-2030 is the UN Decade on Ecosystem Restoration, a group of scientists voice concerns about restoration in heavily fragmented landscapes under a hotter and drier future scenario. Poor recovery of small fragments will end up costing management and wider society later down the line. Millions are invested in setting aside patches, but management is then weak and costly. Rainforests turn into oil palm plantations The past 40 years in Southeast Asia have seen about 50% of lowland rainforests converted to oil palm and other plantations, and much of the remaining forest heavily logged. Little is known about how fragmentation influences recovery and whether climate change will hamper restoration. "Here, we use repeat airborne ...

Scientists have pinpointed the location of an essential enzyme in plant cells involved in photosynthesis, according to a study published today in eLife. The findings overturn conventional thinking about where the enzyme resides in plant cells and suggest a probable role in regulating energy processes as plants adapt from dark to light conditions. During photosynthesis, plants convert carbon into energy stores through 'electron transport', involving an enzyme called ferredoxin:NADP(H) oxidoreductase, or FNR. Plants can switch rapidly between two types of electron transport - linear electron flow (LEF) and cyclic electron ...

Gas and liquid separation processes in the chemical industry could be made more efficient and environmentally friendly by using substances known as intrinsically porous materials (IPMs). KAUST researchers review the prospects for IPMs in the journal Accounts of Chemical Research. Niveen Khashab and her team are currently heavily involved in IPM research. "We focus on making materials that will have an impact on the chemical and petrochemical industries in Saudi Arabia and the world," says Niveen Khashab, the corresponding author of the review. IPM materials can separate gases and liquids without using traditional ...

The annually occurring algal spring blooms play an important role for our climate, as they remove large amounts of carbon dioxide from the atmosphere. However, they are an ephemeral phenomenon. Most of the carbon is released into the water once the algae die. There, bacteria are already waiting to finish them off and consume the algal remains. Previous studies have shown that in these blooms, different algae can come out on top each year. However, within the bacteria subsequently degrading the algae, the same specialised groups prevail year after year. Apparently not the algae themselves but rather their components ...

According to an international study published in Frontiers in Psychology, people around the world have reported changes in their physical activity levels, wellbeing, and eating habits during the first stages of the COVID-19 pandemic. A decrease in physical activity during the pandemic was associated with poorer perceived physical and mental health. Reduced exercise was also associated with perceptions of weight gain and decreased sleep. More than a thousand individuals from several countries with different containment measures participated in an online survey that explored changes in physical activity, eating, sleep, physical and mental health, and wellbeing during the first lockdown phases ...

A RAND Corporation report funded by The Rockefeller Foundation shows that COVID-19 testing can be effectively integrated into K-12 schools' pandemic response plans, helping families and staff feel more comfortable with in-person instruction. The report found that even for well-resourced districts and schools, launching a COVID-19 testing program was a major undertaking that required access to rapid-turnaround tests, additional staffing or strong partners for logistical support, technical assistance for the design and execution of testing programs, and a strategy for successfully engaging the school community to participate ...

Adding a simple polymer to fertilizers or pesticides could dramatically reduce agricultural pollution, suggests a new study by researchers at the University of British Columbia. When agrochemicals are sprayed onto crops, a large amount typically ends up in the surrounding environment due to droplets splashing, rebounding or rolling off the target plants. This amount could be cut at least in half by mixing fertilizers and pesticides with a small quantity of polyethylene oxide, a common polymer additive that improves the ability of agrochemical solutions to stick to plant surfaces, ...

CORVALLIS, Ore. - A quarter-century-old harvesting restriction intended to last one year has served as an obstacle to returning eastern Oregon national forests to the healthier, more fire-resilient conditions they embodied in the late 1800s, research by the Oregon State University College of Forestry shows. The findings, published in Ecosphere, are both important and timely because the U.S. Forest Service recently revised what has widely become known as the "21-inch rule" - a prohibition against cutting trees greater than 21 inches in diameter at breast height on Forest Service land in eastern Oregon. "Under the old policy, live trees more than 21 inches in diameter ...

Strongly correlated systems are materials that exhibit strong interactions between electrons, a property unseen in ordinary conductors or insulators. Typical examples include metal-insulator transitions or unconventional high-temperature superconductivity where the resistance becomes zero at high temperatures. There have been studies to explain this strong interaction between electrons and their characteristic energy scales, but no direct observation on such energy scales through theory or experiments has been reported. To this, the POSTECH-IBS joint research team has succeeded in directly observing the evolution of coherence energy ...

WASHINGTON--Illegal use of anabolic steroids not only has dangerous side effects during use but also can harm of men's testicular function years after they stop abusing steroids, according to a study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. Anabolic steroids are synthetic forms of testosterone, and their abuse is prevalent among athletes worldwide. Some people use these steroids without a prescription to improve athletic performance or get a more muscular look. Known side effects of these drugs in men include breast growth, hair loss, shrunken testicles and lower testosterone levels. Also called hypogonadism, low testosterone can cause decreased sex drive, poor erections and a low sperm count. "It is still debated whether illicit ...

A worryingly high number of Asian bamboo longhorn beetles (Chlorophorus annularis) turn out to have been emerging across Europe for about a century already, finds an international research team, headed by researchers from the Center of Natural History, University of Hamburg, Germany. Curiously, the recent records of the invasive, non-native to the Old Continent species are mostly sourced from citizen scientists and online platforms, which proves the power of involving the public in species monitoring. The study is published in the open-access, peer-reviewed ...

A two-week course of high doses of CBD helps restore the function of two proteins key to reducing the accumulation of beta-amyloid plaque, a hallmark of Alzheimer's disease, and improves cognition in an experimental model of early onset familial Alzheimer's, investigators report. The proteins TREM2 and IL-33 are important to the ability of the brain's immune cells to literally consume dead cells and other debris like the beta-amyloid plaque that piles up in patients' brains, and levels of both are decreased in Alzheimer's. The investigators report ...

An analysis of SARS-CoV-2 genome diversity in more than 1,000 people in the United Kingdom suggests that if viral mutations do arise, they can be transmitted in some cases but they rarely persist in subsequent transmissions. "Our observations indicate the within-host emergence of vaccine- and therapeutic-escape mutations is likely to be relatively rare," say the authors, "at least during early infection when viral loads are high." However, because mutations that can escape therapies like antibodies were identified, including in higher viral load samples, the authors encourage continued monitoring and vigilance, particularly as vaccines and therapeutics that put "pressure" on viruses to adapt are rolled out more widely. ...

While receiving just one dose of a two-dose SARS-CoV-2 vaccine tends to decrease infections in the short-term if it produces a strong immune response, it may increase the potential for the virus to "escape" therapies in the longer-term if one-dose vaccinal immunity is weak, reports a new modeling study "[O]ur work emphasizes that the impact of vaccine dosing regimes are strongly dependent on the relative robustness of immunity conferred by a single dose," the authors write. As COVID-19 vaccines have been distributed internationally, several countries including the United Kingdom and Canada have chosen to delay the second dose to increase the number of individuals ...