Chiral amines synthesized by nickel-catalysed asymmetric reductive hydroalkylation eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.
Thai Red Cross Emerging Infectious Diseases Health Science Centre under Chulalongkorn University announced yesterday that it is developing a Covid-19 diagnostic tool using a similar coronavirus strain to that found in local horseshoe bat populations.
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Depending on the intensity, tone and rate of someone s speech, the brain apparently recognises whether the message would tend to be true or not. Photo: AFP
It s possible to spot a liar just from their voice, research suggests. In fact, the pitch, rate and intensity of someone s speech can help us deduce whether a speaker is honest and sure of what they re saying, or whether they re lying, according to a study from the French National Center for Scientific Research, CNRS.
The research was carried out by scientists at the Science and Technology for Music and Sound Laboratory and the Perceptual Systems Laboratory. The study was published in the journal
Cellular survival after radiation exposure depends on the specific protein behavior
Exposure to radiation can wreak indiscriminate havoc on cells, tissues, and organs. Curiously, however, some tissues are more vulnerable to radiation damage than others.
Scientists have known these differences involve the protein p53, a well-studied tumor-suppressor protein that initiates a cell s auto-destruct programs. Yet, levels of this sentinel protein are often similar in tissues with vastly different sensitivities to radiation, posing the question: How is p53 involved?
A new study by researchers in the Blavatnik Institute at Harvard Medical School, Massachusetts General Hospital, and the Novartis Institutes for BioMedical Research now sheds light on this mystery.
Reporting in
Nature Communications on Feb. 9, they describe how cellular survival after radiation exposure depends on behavior of p53 over time. In vulnerable tissues, p53 levels go up and remain high, leading to cell death. In tissues that tend to survive radiation damage, p53 levels oscillate up and down.
“Dynamics matter. How things change over time matters,” said co-corresponding author Galit Lahav, the Novartis Professor of Systems Biology at HMS. “Our ability to understand biology is limited when we only look at snapshots. By seeing how things evolve temporally, we gain much richer information that can be critical for dissecting diseases and creating new therapies.”