HOUSTON - (July 7, 2021) - A thin shell of soft polymer can help keep knotty ceramic structures from shattering, according to materials scientists at Rice University. Ceramics made with 3D printers crack under stress like any plate or bowl. But covered in a soft polymer cured under ultraviolet light, the same materials stand a far better chance of keeping their structural integrity, much like a car windshield's treated glass is less likely to shatter. The research at Rice's Brown School of Engineering, which appears in Science Advances, demonstrates the concept on schwarzites, complex lattices that for decades existed only as theory but can now be made with 3D printers. With added polymers, they come to resemble structures ...

Microscopists have long sought to find a way to produce high-quality, deep-tissue imaging of living subjects in a timely fashion. Until now, they had to choose between image quality or speed when it comes to looking into the inner workings of complex biological systems. Such a development would have a powerful impact on researchers in biology and in neuroscience, experts say. Now Dushan N. Wadduwage, a John Harvard Distinguished Science Fellow in Imaging at the FAS Center of Advanced Imaging, along with a team from MIT, detailed a new technique that would make that possible in a report in Science Advances. In the paper, the team presents a new process that uses computational imaging to get high resolution images at a rate 100 to 1,000 times faster than other state-of-the-art ...

Increased acidity in the atmosphere is disrupting the ecological balance of the oceans, according to new research led by the University of East Anglia (UEA). The first study to look at acidity's impact on nutrient transport to the ocean demonstrates that the way nutrients are delivered affects the productivity of the ocean and its ability to absorb CO2 from the atmosphere. The research, 'Changing atmospheric acidity as a modulator of nutrient deposition and ocean biogeochemistry', is published today in Science Advances. The analysis was carried out by an international team of experts, sponsored by the United Nations Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP). Prof Alex Baker, professor of marine and atmospheric chemistry ...

To create high-resolution, 3D images of tissues such as the brain, researchers often use two-photon microscopy, which involves aiming a high-intensity laser at the specimen to induce fluorescence excitation. However, scanning deep within the brain can be difficult because light scatters off of tissues as it goes deeper, making images blurry. Two-photon imaging is also time-consuming, as it usually requires scanning individual pixels one at a time. A team of MIT and Harvard University researchers has now developed a modified version of two-photon imaging that can image deeper within tissue and perform the imaging much more quickly than what was previously possible. This kind of imaging could allow scientists to more rapidly obtain ...

Metastatic tumors originating from notoriously aggressive triple-negative breast cancer that emerge in the lungs contain a more diverse array of cancer cells than those that arise in the liver, according to a new study in mice and organs from deceased cancer patients. The study also identified a set of genes that distinguish lung and liver metastases; together, the findings may inform future research on how targeted therapies impact tumors across various microenvironments. While scientists have known that the presence of distinct tumor cell populations within the same tumor drives breast cancer progression, it has not been fully understood why this dangerous cellular diversity develops within some tumors and not others. To investigate ...

From above, the Antarctic Ice Sheet might look like a calm, perpetual ice blanket that has covered Antarctica for millions of years. But the ice sheet can be thousands of meters deep at its thickest, and it hides hundreds of meltwater lakes where its base meets the continent's bedrock. Deep below the surface, some of these lakes fill and drain continuously through a system of waterways that eventually drain into the ocean. Now, with the most advanced Earth-observing laser instrument NASA has ever flown in space, scientists have improved their maps of these hidden lake systems under the West Antarctic ice sheet--and ...

"Equal pay for equal work," a motto touted by many people, turns out to be relevant to the plant world as well. According to new research by Stanford University ecologists, plants allocate resources to their microbial partners in proportion to how much they benefit from that partnership. "The vast majority of plants rely on microbes to provide them with the nutrients they need to grow and reproduce," explained Brian Steidinger, a former postdoctoral researcher in the lab of Stanford ecologist, Kabir Peay. "The problem is that these microbes differ in how well they do the job. We wanted to see how the plants reward their microbial employees." In a new study, published July 6 in the journal American Naturalist, the researchers investigated ...

Very recently, researchers led by Markus Aspelmeyer at the University of Vienna and Lukas Novotny at ETH Zurich cooled a glass nanoparticle into the quantum regime for the first time. To do this, the particle is deprived of its kinetic energy with the help of lasers. What remains are movements, so-called quantum fluctuations, which no longer follow the laws of classical physics but those of quantum physics. The glass sphere with which this has been achieved is significantly smaller than a grain of sand, but still consists of several hundred million atoms. In contrast to ...

DURHAM, N.C. -- You dash into a convenience store for a quick snack, spot an apple and reach for a candy bar instead. Poor self-control may not be the only factor behind your choice, new research suggests. That's because our brains process taste information first, before factoring in health information, according to new research from Duke University. "We spend billions of dollars every year on diet products, yet most people fail when they attempt to diet," said study co-author Scott Huettel, a professor of psychology and neuroscience at Duke. "Taste seems to have an advantage that sets us up for failure." "For many individuals, health information enters the decision process ...

Injecting sulphur into the stratosphere to reduce solar radiation and stop the Greenland ice cap from melting. An interesting scenario, but not without risks. Climatologists from the University of Liège have looked into the matter and have tested one of the scenarios put forward using the MAR climate model developed at the University of Liège. The results are mixed and have been published in the journal The Cryosphere. The Greenland ice sheet will lose mass at an accelerated rate throughout the 21st century, with a direct link between anthropogenic greenhouse gas emissions and the extent of Greenland's mass loss. To combat this phenomenon, and therefore global warming, it is essential to reduce ...

ITHACA, N.Y. - An interdisciplinary team of Cornell and Harvard University researchers developed a machine learning tool to parse quantum matter and make crucial distinctions in the data, an approach that will help scientists unravel the most confounding phenomena in the subatomic realm. The Cornell-led project's paper, "Correlator Convolutional Neural Networks as an Interpretable Architecture for Image-like Quantum Matter Data," published June 23 in Nature Communications. The lead author is doctoral student Cole Miles. The Cornell team was led by Eun-Ah Kim, professor of physics in the College of Arts and Sciences, who partnered with Kilian Weinberger, associate professor of computing and information science in the Cornell Ann S. ...

When you insist you're not racist, you may unwittingly be sending the opposite message. That's the conclusion of a new study* by three Berkeley Haas researchers who conducted experiments with white participants claiming to hold egalitarian views. After asking them to write statements explaining why they weren't prejudiced against Black people, they found that other white people could nevertheless gauge the writers' underlying prejudice. "Americans almost universally espouse egalitarianism and wish to see themselves as non-biased, yet racial prejudice persists," says Berkeley ...

A genetic map of an aggressive childhood brain tumour called medulloblastoma has helped researchers identify a new generation anti-cancer drug that can be repurposed as an effective treatment for the disease. This international collaboration, led by researchers from The University of Queensland's (UQ) Diamantina Institute and WEHI in Melbourne, could give parents hope in the fight against the most common and fatal brain cancer in children. UQ lead researcher Dr Laura Genovesi said the team had mapped the genetics of these aggressive brain tumours for five years to find new pathways that existing drugs could potentially target. "These are drugs already approved for other diseases or cancers but have never been tested in paediatric brain tumours," Dr Genovesi ...

ST. LOUIS -- In the United States, low-income and minority students are completing college at low rates compared to higher-income and majority peers -- a detriment to reducing economic inequality. Double-dose algebra could be a solution, according to a new study published in roceedings of the National Academy of Sciences of the United States of America (PNAS). The paper, "Effects of Double-Dose Algebra on College Persistence and Degree Attainment," is the culmination of a series of studies that followed two cohorts of ninth-grade students over a period of 12 years in the Chicago Public Schools (CPS) where double-dose algebra ...

Miniaturization is rapidly reshaping the field of biochemistry, with emerging technologies such as microfluidics and "lab-on-a-chip" devices taking the world by storm. Chemical reactions that were normally conducted in flasks and tubes can now be carried out within tiny water droplets not larger than a few millionths of a liter. Particularly, in droplet-array sandwiching techniques, such tiny droplets are orderly laid out on two parallel flat surfaces opposite to each other. By bringing the top surface close enough to the bottom one, each top droplet makes contact with the opposite bottom droplet, exchanging chemicals and transferring particles or even cells. In quite a literal way, these droplets can act as small reaction ...

BUFFALO, N.Y -- Children who eat slower are less likely to be extroverted and impulsive, according to a new study co-led by the University at Buffalo and Children's Hospital of Philadelphia. The research, which sought to uncover the relationship between temperament and eating behaviors in early childhood, also found that kids who were highly responsive to external food cues (the urge to eat when food is seen, smelled or tasted) were more likely to experience frustration and discomfort and have difficulties self-soothing. These findings are critical because faster eating and greater responsiveness to food cues have been linked to obesity risk in children, ...

A new study examining why young South Asian heart attack patients have more adverse outcomes found this patient population was often obese, used tobacco products, and had a family history of heart disease or risk factors that could have been prevented, monitored for or treated before heart attacks happen. The study will be presented at the ACC Asia 2021 Together with SCS 32nd Annual Scientific Meeting Virtual being held July 9-11, 2021. "South Asians tend to have multiple co-morbidities including diabetes and obesity at younger ages which is different from the white population," said Salik ur Rehman Iqbal, ...

Research conducted at Cruzeiro do Sul University in São Paulo, Brazil, can contribute to earlier diagnosis of diabetic neuropathy, a disorder characterized by damage to peripheral nerves, with symptoms such as pain and paresthesia (pricking, burning and numbness), mainly in the legs and feet. In the study, a group led by Professor Paulo Barbosa de Freitas Júnior measured grip force in diabetic patients while they were holding and handling objects. The results were compared with data for healthy subjects and patients with other neurological diseases, such as multiple sclerosis, Parkinson’s, and carpal tunnel syndrome (pain, numbness and tingling in the hand and arm caused by a pinched nerve in the wrist). Freitas and his ...

July 7, 2021 - The murders of George Floyd and other Black Americans have prompted a national outcry against structural racism and police brutality. How are leading nursing organizations and schools of nursing defining their positions on racism? That's the topic of a special article in the July/August issue of The Journal of the Association of Nurses in AIDS Care (JANAC). The official journal of the Association of Nurses in AIDS Care, JANAC is published in the Lippincott portfolio by Wolters Kluwer. Three major national nursing organizations and many top-ranked schools ...

Colorado researchers have published new findings in Emerging Infectious Diseases that take a first look at the use of SARS-CoV-2 mathematical modeling to inform early statewide policies enacted to reduce the spread of the Coronavirus pandemic in Colorado. Among other findings, the authors estimate that 97 percent of potential hospitalizations across the state in the early months of the pandemic were avoided as a result of social distancing and other transmission-reducing activities such as mask wearing and social isolation of symptomatic individuals. The modeling team was led by faculty and researchers in the Colorado School of Public Health and involved experts from the University of Colorado Anschutz Medical Campus, University of Colorado Denver, University of Colorado ...

Immunologists at St. Jude Children's Research Hospital have identified a biological pathway that selectively controls how key immune cells, called T follicular helper cells, mature into functional components of the immune system. The finding offers the promise of developing drugs to activate the metabolic pathway to enhance the effectiveness of vaccines, including those that protect against COVID-19. Such medications could stimulate the immune system to respond more vigorously following immunization to produce more antibodies against a virus or bacterium. The work also lays the foundation for drugs that dial down the pathway to alleviate autoimmune diseases such as lupus. In such disorders, an overactive immune system produces antibodies that attack the body's own tissues. Led by ...

URBANA, Ill. ¬- Bioenergy from crops is a sustainable alternative to fossil fuels. New crops such as energycane can produce several times more fuel per acre than soybeans. Yet, challenges remain in processing the crops to extract fuel efficiently. Four new studies from the University of Illinois explore chemical-free pretreatment methods, development of high-throughput phenotyping methods, and commercial-scale techno-economic feasibility of producing fuel from energycane in various scenarios. The studies are part of the ROGUE (Renewable Oil Generated with Ultra-productive Energycane) project at U of I. ROGUE focuses on bioengineering ...

What The Study Did: Wearable sensor data were used to examine the duration and variation of recovery among COVID-19-positive and COVID-19-negative participants. Authors: Jennifer M. Radin, Ph.D., M.P.H., of the Scripps Research Translational Institute in La Jolla, California, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.15959) Editor's Note: The article includes conflict of interest and funding/support disclosures. Please ...

What The Study Did: The characteristics and factors associated with deaths among individuals detained in U.S. Immigration and Customs Enforcement (ICE) facilities from 2011 to 2018 were examined in this study. Authors: Parveen Parmar, M.D., M.P.H., of the Keck School of Medicine of the University of Southern California in Los Angeles, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.16019) Editor's Note: The article includes conflict of interest and funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding ...

Diversification in the sourcing of food into cities can go a long way to tempering "food shock" -- a sudden drop in food supply due to unforeseen events, according to a team of researchers from Penn State and Northern Arizona University, who developed a statistical risk model linking supply chain diversity to the probability of a city experiencing food shocks. "The model is simple, operationally useful and hazard-agnostic," the researchers report today (July 8) in Nature. "Using this method cities can improve their resistance to food supply shocks with policies that increase the food supply chain diversity." The researchers investigated four types of food -- crops, live animals, feed and meat -- over a four-year period from ...