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October 10, 2020

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


New project to build nano-thermometers could revolutionize temperature imaging

Posted: 09 Oct 2020 01:24 PM PDT

Cheaper refrigerators? Stronger hip implants? A better understanding of human disease? All of these could be possible and more, someday, thanks to an ambitious new project.

Hydroxychloroquine does not counter SARS-CoV-2 in hamsters, high dose of favipiravir does: study

Posted: 09 Oct 2020 01:24 PM PDT

Virologists have shown that a treatment with the anti-malaria drug hydroxychloroquine does not limit SARS-CoV-2 coronavirus replication in hamsters. A high dose of the anti-flu drug favipiravir, by contrast, has an antiviral effect in the hamsters.

Researchers 3D print unique micro-scale fluid channels used for medical testing

Posted: 09 Oct 2020 01:24 PM PDT

In a groundbreaking new study, researchers have 3D printed unique fluid channels at the micron scale that could automate production of diagnostics, sensors, and assays used for a variety of medical tests and other applications.

Geologists solve puzzle that could predict valuable rare earth element deposits

Posted: 09 Oct 2020 01:24 PM PDT

Pioneering new research has helped geologists solve a long-standing puzzle that could help pinpoint new, untapped concentrations of some the most valuable rare earth deposits.

Female surgeons perform less complex cases than male peers, likely due to systemic bias

Posted: 09 Oct 2020 01:24 PM PDT

Female surgeons at a large academic medical center perform less complex surgical procedures than their male counterparts, according to a new study. This study is one of the first to measure the problem of underemployment among female surgeons in the United States, which can affect compensation, career advancement and job satisfaction.

What tiny surfing robots teach us about surface tension

Posted: 09 Oct 2020 01:24 PM PDT

Propelled by chemical changes in surface tension, microrobots surfing across fluid interfaces lead researchers to new ideas.

School absences correlate to impaired air quality

Posted: 09 Oct 2020 10:14 AM PDT

In Salt Lake City schools, absences rise when the air quality worsens, and it's not just in times of high pollution or 'red' air quality days -- even days following lower levels of pollutants saw increased absences.

Climate patterns linked in Amazon, North and South America, study shows

Posted: 09 Oct 2020 09:19 AM PDT

Researchers have developed a tree-ring chronology from the Amazon River basin that established a link between climate patterns in the Amazon and the Americas.

Nerve cell activity shows how confident we are

Posted: 09 Oct 2020 09:19 AM PDT

Should I or shouldn't I? The activity of individual nerve cells in the brain tells us how confident we are in our decisions. The result is unexpected - the researchers were actually on the trail of a completely different evaluation mechanism.

A new look at sunspots

Posted: 09 Oct 2020 09:18 AM PDT

NASA's extensive fleet of spacecraft allows scientists to study the Sun extremely close-up - one of the agency's spacecraft is even on its way to fly through the Sun's outer atmosphere. But sometimes taking a step back can provide new insight.

Meltwater lakes are accelerating glacier ice loss

Posted: 09 Oct 2020 08:42 AM PDT

Meltwater lakes that form at glacier margins cause ice to recede much further and faster compared to glaciers that terminate on land, according to a new study. But the effects of these glacial lakes are not represented in current ice loss models, warn the study authors. Therefore, estimates of recession rates and ice mass loss from lake-terminating glaciers in the coming decades are likely to be under-estimated.

The choroid plexus: A conduit for prenatal inflammation?

Posted: 09 Oct 2020 08:42 AM PDT

New work offers an unprecedented real-time view of the choroid plexus in a mouse model, providing a glimpse of how disturbances of the mother's immune system during pregnancy disrupt the developing brain.

Oldest monkey fossils outside of Africa found

Posted: 09 Oct 2020 08:42 AM PDT

Three fossils found in a lignite mine in southeastern Yunan Province, China, are about 6.4 million years old, indicate monkeys existed in Asia at the same time as apes, and are probably the ancestors of some of the modern monkeys in the area, according to an international team of researchers.

Graphene microbubbles make perfect lenses

Posted: 09 Oct 2020 08:42 AM PDT

Researchers are developing a method to generate precisely controlled graphene microbubbles on a glass surface using laser pulses.

Palladium catalysts can do it

Posted: 09 Oct 2020 07:27 AM PDT

Palladium catalysts help synthesize key chemicals for many industries. However, direct reaction of two basic reagents, aryl halides and alkyllithium compounds, remains a challenge. Now, a team of scientists have found that a catalyst containing YPhos-type ligands can mediate this reaction even at room temperature. This discovery may contribute to the development of more sustainable processes in the chemical industry.

Bone Loss: Perforated bone tissue from too little sugar

Posted: 09 Oct 2020 06:49 AM PDT

Bone marrow cancer is currently an incurable disease that affects about 400 people in Norway every year. One Norwegian researcher has now found an important reason for bone destruction in people with this disease.

Spitzer space telescope legacy

Posted: 09 Oct 2020 06:49 AM PDT

Scientists have provided an inventory of the major discoveries made possible thanks to Spitzer and offer guidance on where the next generation of explorers should point the James Webb Space Telescope (JWST) when it launches in October 2021.

Future ocean conditions could cause significant physical changes in marine mussels

Posted: 09 Oct 2020 06:49 AM PDT

Scientists showed increased temperature and acidification of our oceans over the next century could have a range of effects on an economically important marine species.

Droughts are threatening global wetlands

Posted: 09 Oct 2020 06:35 AM PDT

Scientists have shown how droughts are threatening the health of wetlands globally. Scientists highlight the many physical and chemical changes occurring during droughts that lead to severe, and sometimes irreversible, drying of wetland soils.

Effects of poverty on childhood development seen in children as young as 5

Posted: 09 Oct 2020 06:35 AM PDT

Researchers have found that health inequities can be measured in children as young as 5 years old. The research contributes to a growing body of literature finding that children of color who are also poor face greater health inequities than their white counterparts.

Researchers use artificial intelligence language tools to decode molecular movements

Posted: 09 Oct 2020 05:49 AM PDT

Researchers used language processing AI to turn molecular movements into stories that reveal what forms a protein can take and how and when it changes form -- key information for understanding disease and developing targeted therapeutics.

New class of highly effective inhibitors protects against neurodegeneration

Posted: 08 Oct 2020 11:21 AM PDT

Neurobiologists have uncovered how a special receptor can lead to cell death. Their fundamental findings on neurodegenerative processes simultaneously led the researchers to a completely new principle for therapeutic agents. In their experiments on mouse models, they discovered a new class of highly effective inhibitors for protecting nerve cells. This novel class of drugs opens up perspectives to combat currently untreatable diseases of the nervous system.

DNA test identifies genetic causes of severe fetal and newborn illness

Posted: 08 Oct 2020 11:21 AM PDT

A new study shows the promise of high-throughput DNA-sequencing technologies to improve prenatal diagnosis and pregnancy outcomes for women who have experienced an abnormal prenatal ultrasound.

Moles: Intersexual and genetically doped

Posted: 08 Oct 2020 11:21 AM PDT

Female moles not only have ovarian, but also testicular tissue that produces male sex hormones - which lets them diverge from the categorization into two sexes. A team describes which genetic modifications contribute to this singular development.

There's a gene for detecting that fishy smell, olfactory GWAS shows

Posted: 08 Oct 2020 11:21 AM PDT

Some people carry a mutation in a particular gene that makes the smell of fish less intense. The study, which is the largest genome-wide association study (GWAS) of olfactory genes in humans involving a sniff test and looked at over 9,000 people from Iceland, also shows that people vary in their ability to discern the smell of licorice and cinnamon.

New species of aquatic mice discovered, cousins of one of the world's rarest mammals

Posted: 08 Oct 2020 11:21 AM PDT

Scientists have discovered two new species of 'stilt mice,' semi-aquatic African rodents with extra-long feet that they stand up on like a kangaroo. The mice wade in streams and dip their whiskers onto the water's surface to detect bugs to eat. The researchers also helped clarify these rodents' family tree, which includes a genus that's only ever been collected once, 93 years ago.

HIV up close: Unprecedented view of virus reveals essential steps for causing AIDS

Posted: 08 Oct 2020 11:21 AM PDT

Accomplishing a feat that had been a pipe dream for decades, scientists have recreated in a test tube the first steps of infection by HIV (human immunodeficiency virus), the virus that causes AIDS (acquired immunodeficiency syndrome). Doing so has provided up-close access to the virus -- which is otherwise obstructed from view deep within the cell -- and enabled identification of essential components that HIV needs to replicate within its human host.

Olympic athletes should be mindful of their biological clocks

Posted: 08 Oct 2020 11:20 AM PDT

Biological clocks have sizeable effects on the performance of elite athletes. This conclusion was drawn by chronobiologists after studying the times achieved by swimmers in four different Olympic Games. Shifting the clock to reach peak performance at the right time could make the difference between winning and losing.

Breakthrough discovery in gene causing severe nerve conditions

Posted: 08 Oct 2020 11:20 AM PDT

Researchers have made a breakthrough genetic discovery into the cause of a spectrum of severe neurological conditions.

One electrode fits all functional groups

Posted: 08 Oct 2020 11:20 AM PDT

Researchers employed the gold electrode and attached the target molecules onto the electrode. Just like functional groups generate diverse electronic effects, one electrode fits all reactions as the single electrode can behave like multiple functional groups just with the switch of applied voltage.

Deep-seabed mining lastingly disrupts the seafloor food web

Posted: 08 Oct 2020 09:44 AM PDT

Deep-seabed mining is considered a way to address the increasing need of rare metals. However, the environmental impacts are considered to be substantial but remain largely unknown and clear regulatory standards are lacking. Researchers now describe that mining-related disturbances have a long-term impact on carbon flow and the microbial loop at the deep seafloor.

Experimental glioblastoma therapy shows curative powers in mice models

Posted: 08 Oct 2020 09:44 AM PDT

Researchers used a second-generation pro-drug called MP-Pt(IV) to target the deadly cells of glioblastoma tumors and found mice harboring human glioblastoma tumors in their brains had greatly enhanced survival and weight gain when given the newly developed prodrug. This mitochondrial-targeted prodrug also greatly improves outcomes when coupled with standard therapies of radiation and/or chemotherapy.

Nanoscale machines convert light into work

Posted: 08 Oct 2020 07:42 AM PDT

Researchers have developed a tiny new machine that converts laser light into work. These optically powered machines self-assemble and could be used for nanoscale manipulation of tiny cargo for applications such as nanofluidics and particle sorting.

Researchers find 'missing link' between magnetars and rotation-powered pulsars

Posted: 08 Oct 2020 07:42 AM PDT

Researchers have made observations of a new magnetar, called Swift J1818.0-1607, which challenges current knowledge about two types of extreme stars, known as magnetars and pulsars.

Bacterial cellulose degradation system could give boost to biofuels production

Posted: 08 Oct 2020 07:42 AM PDT

Researchers have uncovered details of how a certain type of bacteria breaks down cellulose -- a finding that could help reduce the cost and environmental impact of the use of biomass, including biofuel production. The bacteria's cellulose degradation system is in some way different from how a fungus is already widely used in industry, including to soften up denim to make stone-washed jeans.

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