A combined optical transmitter and receiver
153,594 articles from EurekAlert
A direct protein-to-protein binding couples cell survival to cell proliferation
Researchers at LinkÃ¶ping University, together with colleagues in China, have developed a tiny unit that is both an optical transmitter and a receiver. "This is highly significant for the miniaturisation of optoelectronic systems", says LiU professor Feng Gao. The results have been published in Nature Electronics.
A twist connecting magnetism and electronic-band topology
The regulators of apoptosis watch over cell replication and the decision to enter the cell cycle. Researchers now show a direct link between the protein MCL1 -- a member of the BCL2 protein family known as the gatekeepers of apoptosis -- and the cell-cycle checkpoint protein P18. Through this link, MCL1, which functions in the decision between either cell survival or programmed death, can also...
An antibiotic masquerading as a natural compound in the Giant Madeiran Squill
Materials that combine topological electronic properties and quantum magnetism are of high current interest, for the quantum many-body physics that can unfold in them and for possible applications in electronic components. For one such material, physicists at ETH Zurich have now established the microscopic mechanism linking magnetism and electronic-band topology.
Anterior insula activation restores prosocial behavior in animal model of opioid addiction
A previous study has shown that a type of squill growing in Madeira produces a chemical compound that may be useful as a medicinal drug. But a new study from researchers at Uppsala University has shown that this is probably not true: instead, the plant had likely accumulated antibiotics from contaminated soil.
Case study: Treating COVID-19 in a patient with multiple myeloma
Researchers in the Arizona State University Department of Psychology have shown that chemogenetic activation of the anterior insula restores prosocial behavior in an animal model of opioid addiction and empathy. The findings suggest an important role for the anterior insula in the brain response to addiction.
Changes to drylands with future climate change
A case study of a patient in Wuhan, China, suggests that the immunosuppressant tocilizumab may be an effective COVID-19 treatment for very ill patients who also have multiple myeloma and other blood cancers. The report, published in Blood Advances, also suggests that blood cancer patients may have atypical COVID-19 symptoms.
Clues to COVID-19 coronavirus's vulnerability emerge from an antibody against SARS
While drylands around the world will expand at an accelerated rate because of future climate change, their average productivity will likely be reduced, according to a new study. These regions, which primarily include savannas, grasslands and shrublands, are important for grazing and non-irrigated croplands. They are also a critical part of the global carbon cycle and make up 41% of Earth's land...
Coronavirus Vaccine: Where are we and what's next? (video)
An antibody recovered from a survivor of the SARS epidemic in the early 2000s has revealed a potential vulnerability of the new coronavirus at the root of COVID-19, according to a study from scientists at Scripps Research.
Coronavirus: Virological findings from patients treated in a Munich hospital
You might have heard that COVID-19 vaccine trials are underway in Seattle. What exactly is being tested? How much longer will these tests take? And when can we expect a vaccine against the novel coronavirus? We chat with Benjamin Neuman, Ph.D., one of the world's experts on coronavirus, and Daniel Wrapp, one of the scientists who mapped the structure of the protein that the coronavirus uses to...
COVID-19 infection and renin angiotensin system blockers
In early February, research teams from CharitÃ© - UniversitÃ¤tsmedizin Berlin, MÃ¼nchen Klinik Schwabing and the Bundeswehr Institute of Microbiology published initial findings describing the efficient transmission of SARS-CoV-2. The researchers' detailed report on the clinical course and treatment of Germany's first group of COVID-19 patients has now been published in Nature*. Criteria may...
COVID-19 pandemic may exacerbate childhood obesity
Discussion ofÂ recommendations for angiotensin-converting enzyme inhibitor and angiotensin receptor blocker use in patients with or at risk of contracting coronavirus disease 2019 (COVID-19).
Deep-sea worms and bacteria team up to harvest methane
Public health scientists predict that school closures due to the COVID-19 pandemic will exacerbate the epidemic of childhood obesity in the United States. Andrew Rundle, DrPH, associate professor of epidemiology at Columbia University Mailman School of Public Health, and colleagues expect that COVID-19-related school closures will double out?of?school time this year for many children in the US and...
Dilemma of COVID-19, aging and cardiovascular disease
Scientists uncover an unusual partnership at the bottom of the ocean.
Do urban fish exhibit impaired sleep?
Whether individuals should continue to take angiotensin-converting enzyme inhibitors and angiotensin receptor blockers in the context of coronavirus disease 2019 (COVID-19) is discussed in this article.
Extreme rainfall days in metropolitan São Paulo have risen four-fold in seven decades
Melatonin controls the body clock -- high melatonin levels make us feel tired in the evening. However, the hormone also plays an important role in animals' biological rhythms. Artificial light at night -- light pollution -- can suppress the production of melatonin in fish, even at very low light intensities, a finding established by researchers from the Leibniz-Institute of Freshwater Ecology and...
Groundwater, a threatened resource requiring sustainable management
Study by researchers at Brazil's National Disaster Surveillance and Early Warning Center (CEMADEN) also shows a rise in the number of consecutive dry days, suggesting that extreme rainfall events are concentrated in shorter, more widely spaced periods.
How important is speech in transmitting coronavirus?
The WEARE group at the University of Cordoba analyzed a case of aquifer recovery and concluded that supervision, governance and use of water for high value crops are some of the keys to guaranteeing sustainability of these reserves
Indigenous American ancestry may be associated with HER2-positive breast cancer
Normal speech by individuals who are asymptomatic but infected with coronavirus may produce enough aerosolized particles to transmit the infection, according to aerosol scientists at UC Davis. Although it's not yet known how important this is to the spread of COVID-19, it underscores the need for strict social distancing measures -- and for virologists, epidemiologists and engineers who study...
Lacustrine ecosystems needed 10 million years to recover after end-permian mass extinction
An increased proportion of Indigenous American (IA) ancestry was associated with a greater incidence of HER2-positive breast cancer, according to a study published in Cancer Research, a journal of the American Association for Cancer Research.
Larger thighs associated with lower risk of heart disease in obesity
A research team led by Prof. WANG Bo from theÂ Nanjing Institute of Geology and Palaeontology of theÂ Chinese Academy of Sciences (NIGPAS)Â found that both lake and peat-forming forest ecosystems probably took as long as 10 million years to recover after the end-Permian mass extinction.
NASA sees tropical cyclone Irondro developing an eye
A larger thigh circumference may be associated with lower blood pressure and a reduced risk of heart disease in people with obesity, according to a study published in Endocrine Connections. In overweight and obese Chinese men and women, larger thigh circumferences were associated with lower blood pressure. These findings suggest that carrying more weight on the thighs may be a marker of better...
NASA-NOAA satellite catches Tropical Cyclone Harold develop near Solomon Islands
As Tropical Cyclone Irondro continues to move through the Southern Indian Ocean, NASA's Terra satellite saw the storm developing an eye as it continued to intensify.
New family of molecules to join altered receptors in neurodegenerative diseases
NASA-NOAA's Suomi NPP satellite passed over the Southern Pacific Ocean and provided forecasters with a visible image of newly formed Tropical Cyclone Harold. Harold formed near the Solomon Islands and now threatens Vanuatu, which has already issued some warnings.
New laser technique will allow more powerful -- and smaller -- particle accelerators
An article published in the Journal of Medicinal Chemistry shows a new family of molecules with high affinity to join imidazoline receptors, which are altered in the brain of those patients with neurodegenerative diseases such as Alzheimer's, Parkinson's and Huntington's. According to the preclinical study, the merge of these specific ligands to I2 receptors improves cognitive skills and some...
Scientists at the University of Rochester's Laboratory for Laser Energetics outline a method to shape intense laser light in a way that accelerates electrons to record energies in very short distances. With such a technology, scientists could perform tabletop experiments to probe the Higgs boson or explore the existence of extra dimensions and the particles that make up our universe.