feed info
39 articles from ScienceDaily
Supramolecular chemistry: Self-constructed folded macrocycles with low symmetry
- ScienceDaily
- 20/11/20 21:36
The synthesis and self-organization of biological macromolecules is essential for life on earth. Chemists now report the spontaneous emergence of complex ring-shaped macromolecules with low degrees of symmetry in the laboratory.
Hyperbaric oxygen treatment: Clinical trial reverses two biological processes associated with aging in human cells
- ScienceDaily
- 20/11/20 21:07
A new study indicates that hyperbaric oxygen treatments (HBOT) in healthy aging adults can stop the aging of blood cells and reverse the aging process. In the biological sense, the adults' blood cells actually grow younger as the treatments progress.
Researchers examine which approaches are most effective at reducing COVID-19 spread
- ScienceDaily
- 20/11/20 21:07
Researchers have found that physical distancing is universally effective at reducing the spread of COVID-19, while social bubbles and masks are more situation-dependent. The researchers developed a model to test the effectiveness of measures such as physical distancing, masks or social bubbles when used in various settings.
After more than a decade, ChIP-seq may be quantitative after all
- ScienceDaily
- 20/11/20 21:07
For more than a decade, scientists studying epigenetics have used a powerful method called ChIP-seq to map changes in proteins and other critical regulatory factors across the genome. While ChIP-seq provides invaluable insights into the underpinnings of health and disease, it also faces a frustrating challenge: its results are often viewed as qualitative rather than quantitative, making...
Polar climate affects trade wind strength in tropics
- ScienceDaily
- 20/11/20 20:21
The impact of sea surface temperature variations in the tropical Pacific on global climate has long been recognized. For instance, the episodic warming of the tropical Pacific during El Niño events causes melt of sea ice in far-reaching parts of the Southern Ocean via its effect on the global atmospheric circulation. A new study demonstrates that the opposite pathway exists as well.
New solvent-based recycling process could cut down on millions of tons of plastic waste
- ScienceDaily
- 20/11/20 20:21
Multilayer plastic materials are ubiquitous in food and medical supply packaging, particularly since layering polymers can give those films specific properties, like heat resistance or oxygen and moisture control. But despite their utility, those ever-present plastics are impossible to recycle using conventional methods.
Frequent, rapid testing could cripple COVID-19 within weeks, study shows
- ScienceDaily
- 20/11/20 20:21
When it comes to curbing the spread of COVID-19, test frequency and test turnaround-time are far more important than test sensitivity, according to a new study. The authors say frequent, rapid tests make 'personalized stay-at-home orders' possible.
Discovery illuminates how cell growth pathway responds to signals
- ScienceDaily
- 20/11/20 19:26
A basic science discovery reveals a fundamental way cells interpret signals from their environment and may eventually pave the way for potential new therapies.
Memories create 'fingerprints' that reveal how the brain is organized
- ScienceDaily
- 20/11/20 19:26
While the broad architecture and organization of the human brain is universal, new research shows how the differences between how people reimagine common scenarios can be observed in brain activity and quantified. These unique neurological signatures could ultimately be used to understand, study, and even improve treatment of disorders such as Alzheimer's disease.
Biophysics: Geometry supersedes simulations
- ScienceDaily
- 20/11/20 19:26
Physicists have introduced a new method that allows biological pattern-forming systems to be systematically characterized with the aid of mathematical analysis. The trick lies in the use of geometry to characterize the dynamics.
Ribosome assembly: The final trimming step
- ScienceDaily
- 20/11/20 19:26
Ribosomes synthesize all the proteins in cells. Studies mainly done on yeast have revealed much about how ribosomes are put together, but a team now reports that ribosome assembly in human cells requires factors that have no counterparts in simpler model organisms.
New report projects severe coral bleaching globally in this century
- ScienceDaily
- 20/11/20 19:26
The United Nations recently released a new report projecting future coral reef bleaching globally.
COVID-19 patients survive in-hospital cardiac arrest at pre-pandemic rates
- ScienceDaily
- 20/11/20 19:26
Resuscitation and survival rates of hospitalized COVID-19 patients who've had cardiac arrest are much higher than earlier reports of near-zero; variation at the individual hospital level may have affected overall numbers
Potential cellular target for eliminating bone breakdown in osteoporosis found
- ScienceDaily
- 20/11/20 19:26
By disabling a function of a set of cells in mice, researchers appear to have halted the process that breaks down bone, a potential boon for osteoporosis treatment.
There are microplastics near the top of Mount Everest too
- ScienceDaily
- 20/11/20 17:39
Researchers analyzing snow and stream samples have found evidence of microplastic pollution on Mount Everest. While the highest concentrations of microplastics were around Base Camp where hikers and trekkers spend the most time, the team also found microplastics as high up as 8,440 meters above sea level, just below the summit.
Plant evolves to stay hidden from harvesting humans
- ScienceDaily
- 20/11/20 17:39
A plant used in traditional Chinese medicine has evolved to become less visible to humans, new research shows.
Middle Stone Age populations repeatedly occupied West African coast
- ScienceDaily
- 20/11/20 17:39
Researchers reveal evidence of Middle Stone Age occupations of the West African coast. Ranging from 62 to 25 thousand years ago, the largest well-dated assemblages from the region clearly document technological continuity across almost 40,000 years in West Africa.
Biofriendly protocells pump up blood vessels
- ScienceDaily
- 20/11/20 17:39
Researchers have prepared synthetic protocells coated in red blood cell fragments for use as nitric oxide generating bio-bots within blood vessels.
Altered 'coat' disguises fatal brain virus from neutralizing antibodies
- ScienceDaily
- 20/11/20 17:38
A genetic modification in the 'coat' of a brain infection-causing virus may allow it to escape antibodies, according to researchers. They say testing people for this and other viral mutations may help identify patients at risk for developing a fatal brain disease.
Age is no barrier to successful weight loss
- ScienceDaily
- 20/11/20 17:38
Obese patients over the age of 60 can lose an equivalent amount of weight as younger people using only lifestyle changes, according to a new study that demonstrates that age is no barrier to losing weight.
A biochemical random number
- ScienceDaily
- 20/11/20 17:38
Scientists have generated a huge true random number using DNA synthesis. It is the first time that a number of this magnitude has been created by biochemical means.
Light-controlled nanomachine controls catalysis
- ScienceDaily
- 20/11/20 17:38
The vision of the future of miniaturization has produced a series of synthetic molecular motors that are driven by a range of energy sources and can carry out various movements. A research group has now managed to control a catalysis reaction using a light-controlled motor.
New insights into memristive devices by combining incipient ferroelectrics and graphene
- ScienceDaily
- 20/11/20 17:38
Scientists are working to create neuromorphic computers, with a design based on the human brain. A crucial component is a memristive device, the resistance of which depends on the history of the device - just like the response of our neurons depends on previous input. Materials scientists analyzed the behavior of strontium titanium oxide, a platform material for memristor research and used the 2D...
New guide on using drones for conservation
- ScienceDaily
- 20/11/20 17:38
Drones are a powerful tool for conservation - but they should only be used after careful consideration and planning, according to a new report.
Rare species of small cats inadequately protected
- ScienceDaily
- 20/11/20 17:38
The Indian subcontinent is a hotspot for wild felines. A new study now shows that only 6-11 per cent of the areas where three rare cat species have their habitat are protected. Lack of knowledge about these species has been an obstacle to understanding their needs for reserves.