Malignant tumors can enhance their ability to survive and spread by suppressing anti-tumor immune cells in their vicinity, but a new study has uncovered a new way to counter this immunosuppressive effect.
Rice University engineers improve simulations that analyze gadolinium-based contrast agents used in clinical magnetic resonance imaging. More efficient simulations could help make better compounds for imaging technologies.
The prevalence of obesity around the world has tripled over the past 40 years, and, along with that rise, dieting and attempts to lose weight also have soared. But according to a new article, when it comes to getting healthy and reducing mortality risk, increasing physical activity and improving fitness appear to be superior to weight loss. The authors say that employing a weight-neutral approach to the treatment of obesity-related health conditions also reduces the health risks associated with yo-yo dieting.
A new study rules out that extreme volcanic episodes had any influence on the massive extinction of species in the late Cretaceous. The results confirm the hypothesis that it was a giant meteorite impact what caused the great biological crisis that ended up with the non-avian dinosaur lineages and other marine and terrestrial organisms 66 million years ago.
A new method for quantifying plant evolution reveals that after the onset of early seed plants, complexity halted for 250 million years until the diversification of flowering plants about 100 million years ago.
Imagine having your own digital personal chef; ready to cook whatever you want, tailoring the shape, texture, and flavor just for you -- all at the push of a button. Engineers have been working on doing just that, using lasers for cooking and 3D printing technology for assembling foods. In their new study they discovered that laser-cooked meat shrinks 50% less, retains double the moisture content, and shows similar flavor development to conventionally cooked meat.
Researchers attempted to unravel such mechanisms by adopting non-invasive diffusion magnetic resonance imaging (MRI) to study the brains of SLE patients, particularly the white matter, coupled with computerized neuropsychological assessment. White matter lies beneath the grey matter cortex in the human brain and comprises millions of bundles of nerve fibers that transmit signals to different brain regions.
Infants coming from homes with domestic violence often go on to have worse academic outcomes in school due to neurodevelopmental lags and a higher risk for a variety of health issues, including gastrointestinal distress, trouble eating and sleeping, as well as stress and illness.
Plants regulate their growth using hormones, including a group called strigolactones that prevent excessive budding and branching. Strigolactones also help plant roots form symbiotic relationships with microorganisms that allow the plant to absorb nutrients from the soil. These two factors have led to agricultural interest in using strigolactones to control the growth of weeds and root parasites, as well as improving nutrient uptake. These root-extruding compounds also stimulate germination of witchweeds and broomrapes, which can cause entire crops of grain to fail, making thorough research essential prior to commercial development. Now scientists have synthesized strigolactones from microbes.
Adrie and Alfons Kennis, two paleo-artists from the Kennis & Kennis Reconstructions, have used facial approximation techniques and the latest findings about Neanderthals to show how ‘Krijn’ - a young Neanderthal man with a conspicuous lump (the result of a small tumor) over his right eyebrow - might have once looked. “Krijn lived in the prehistoric [...]
Being overweight or having obesity, weight that is higher than what is considered healthy for an individual's height, is a major risk factor for high blood pressure. A healthy diet, more physical activity and less sedentary time are recommended to reduce blood pressure for people who are overweight or have obesity; however, evidence of long-term weight loss and sustained blood pressure reductions from these lifestyle changes is limited. New weight-loss medications and bariatric surgery have shown benefits in both long-term weight loss and improved blood pressure, which can reduce the long-term, negative impact of high blood pressure on organ damage.
Astronomers using the NASA/ESA Hubble Space Telescope have captured the brilliance of a globular cluster called Palomar 6. Globular clusters are dense systems of very ancient stars, gravitationally bound into a single structure about 100-200 light-years across. The word globulus, from which these clusters take their name, is Latin for small sphere. Globular clusters are [...]
A new study published in the journal Scientific Reports provides empirical evidence for deliberate self-care tooling in a species of bird. “Most reports of tooling in birds revolve around foraging,” said study lead author Amalia Bastos, a Ph.D. candidate in the School of Psychology at the University of Auckland, and colleagues from the University of [...]
A new community-dwelling study from Sweden suggests that the lunar cycle affects sleep in humans, with more pronounced sleep alterations in men than women. “Both the new and full moons represent significant turning points during the lunar cycle,” said lead author Dr. Christian Benedict, a researcher in the Department of Neuroscience at Uppsala University, and [...]
A new genus and species of palaeoscolecid worm has been identified from two specimens found in the Burgess Shale-type deposits in Utah, the United States. Palaeoscolecida is a group of extinct ecdysozoan worms that existed from the Ealy Cambrian to the Late Silurian period. These ancient creatures were narrow and long, up to tens of [...]
Using spectral data from the Sloan Digital Sky Survey (SDSS), the Chandra Source Catalog 2.0, and the Chandra COSMOS Legacy survey, astronomers have found that X-ray and ultraviolet luminosities of quasars are so tightly correlated that these objects can be used as new ‘standard candles’ to help determine cosmic distances and probe other fundamental cosmological [...]
Researchers have extracted Ancient DNA from human bones to re-write early Japanese history by underlining that modern day populations in Japan have a tripartite genetic origin -- a finding that refines previously accepted views of a dual genomic ancestry.