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Showing posts with label suggests. Show all posts
Showing posts with label suggests. Show all posts

Tuesday, December 24, 2019

Ancient Light Suggests Universe Could Loop Back on Itself!

Image: The cosmic microwave background as seen by the European Space Agency’s Planck satellite. Credit: ESA and the Planck Collaboration

The photo above is quite common among astronomers and astrophysicists. It depicts what is known as the cosmic microwave background (CMB), the very ancient light coming from the beginnings of our universe. It is supposed to be the leftovers of the grand explosion birthing our Universe, called the Big Bang.
When analyzing the expansion of the universe, astrophysicists imagined that the expansion could be rewinded, just like a film, and that this backward movement would show the collapse into a singularity. Together with the astronomical observations of the CMB radiation, they concluded that the universe had to be flat. But recent observations with better precision are showing a different picture. An anomaly in data from the best-ever measurement of the CMB is offering solid (although not yet conclusive) evidence that the universe is closed, and in order to be closed, it would curve gently on itself.
In order to understand the difference between both kind of flatness—that of a flat sheet kept strait, or a flat sheet bended—in both cases the surface seems flat at short distances, but at very long distances, the curvature of the second case will affect and manifest different effects. For instance, two photons could cross at some point when travelling along parallel trajectories. The topology or curvature of a surface plays a crucial role in all that exists within.
As most of the calculations are done considering a flat universe, huge amounts of recalculations would have to be done in order to fine tune the physics concerned. And it seems to be necessary, as according to the latest data, there’s significantly more gravitational lensing of the CMB than expected, and this could be explained by inserting a positive curvature for the universe instead of a flat one.
Results were drawn upon data coming from a 2018 release of the Planck experiment—a European Space Agency (ESA) experiment to map the CMB in more detail—and they were published in Nature Astronomy this month.

RSF in Perspective

The image appearing in the book Gravitation, where the universe is depicted as a balloon which is being inflated and by doing so the galaxies on the surface of the balloon would separate from each other progressively, could be closer to our reality than expected. That being the case, then in Nassim Haramein’s view, the pertinent question is, “Who is the guy inflating the balloon?” If for all action there is an equal and opposite reaction, then where is the force equivalent to the lungs of the guy blowing the balloon? Haramein’s holographic theory shows that mass and forces emerge from the quantum vacuum or vacuum fluctuations, giving an elegant and simple answer to that question. Additionally, when including torque and Coriolis forces in Einstein’s Field Equations, Nassim Haramein obtains a modified and corrected topology for the universe, depicted as a double torus, which is a double “loop back on itself” configuration. The double torus configuration is crucial to understanding the dynamics of the universe as a feedback-feedforward mechanism! The results presented in this article head in the direction of Haramein’s model of the universe.

Sunday, November 24, 2019

Drinking tea improves brain health, study suggests

Lady holding a cup of Tea.

A recent study led by researchers from the National University of Singapore (NUS) revealed that regular tea drinkers have better organised brain regions -- and this is associated with healthy cognitive function -- compared to non-tea drinkers. The research team made this discovery after examining neuroimaging data of 36 older adults.
"Our results offer the first evidence of positive contribution of tea drinking to brain structure, and suggest that drinking tea regularly has a protective effect against age-related decline in brain organisation," explained team leader Assistant Professor Feng Lei, who is from the Department of Psychological Medicine at the NUS Yong Loo Lin School of Medicine.
The research was carried out together with collaborators from the University of Essex and University of Cambridge, and the findings were published in scientific journal Aging on 14 June 2019.
Benefits of regular intake of tea
Past studies have demonstrated that tea intake is beneficial to human health, and the positive effects include mood improvement and cardiovascular disease prevention. In fact, results of a longitudinal study led by Asst Prof Feng which was published in 2017 showed that daily consumption of tea can reduce the risk of cognitive decline in older persons by 50 per cent.
Following this discovery, Asst Prof Feng and his team further explored the direct effect of tea on brain networks.
The research team recruited 36 adults aged 60 and above, and gathered data about their health, lifestyle, and psychological well-being. The elderly participants also had to undergo neuropsychological tests and magnetic resonance imaging (MRI). The study was carried out from 2015 to 2018.
Upon analysing the participants' cognitive performance and imaging results, the research team found that individuals who consumed either green tea, oolong tea, or black tea at least four times a week for about 25 years had brain regions that were interconnected in a more efficient way.
"Take the analogy of road traffic as an example -- consider brain regions as destinations, while the connections between brain regions are roads. When a road system is better organised, the movement of vehicles and passengers is more efficient and uses less resources. Similarly, when the connections between brain regions are more structured, information processing can be performed more efficiently," explained Asst Prof Feng.
He added, "We have shown in our previous studies that tea drinkers had better cognitive function as compared to non-tea drinkers. Our current results relating to brain network indirectly support our previous findings by showing that the positive effects of regular tea drinking are the result of improved brain organisation brought about by preventing disruption to interregional connections."
Next step in research
As cognitive performance and brain organisation are intricately related, more research is needed to better understand how functions like memory emerge from brain circuits, and the possible interventions to better preserve cognition during the ageing process. Asst Prof Feng and his team plan to examine the effects of tea as well as the bioactive compounds in tea can have on cognitive decline.

Story Source:
Materials provided by National University of SingaporeNote: Content may be edited for style and length.

Thursday, November 21, 2019

Drinking tea improves brain health, study suggests

A cup of Tea
A recent study led by researchers from the National University of Singapore (NUS) revealed that regular tea drinkers have better organised brain regions -- and this is associated with healthy cognitive function -- compared to non-tea drinkers. The research team made this discovery after examining neuroimaging data of 36 older adults.
"Our results offer the first evidence of positive contribution of tea drinking to brain structure, and suggest that drinking tea regularly has a protective effect against age-related decline in brain organisation," explained team leader Assistant Professor Feng Lei, who is from the Department of Psychological Medicine at the NUS Yong Loo Lin School of Medicine.
The research was carried out together with collaborators from the University of Essex and University of Cambridge, and the findings were published in scientific journal Aging on 14 June 2019.
Benefits of regular intake of tea
Past studies have demonstrated that tea intake is beneficial to human health, and the positive effects include mood improvement and cardiovascular disease prevention. In fact, results of a longitudinal study led by Asst Prof Feng which was published in 2017 showed that daily consumption of tea can reduce the risk of cognitive decline in older persons by 50 per cent.
Following this discovery, Asst Prof Feng and his team further explored the direct effect of tea on brain networks.
The research team recruited 36 adults aged 60 and above, and gathered data about their health, lifestyle, and psychological well-being. The elderly participants also had to undergo neuropsychological tests and magnetic resonance imaging (MRI). The study was carried out from 2015 to 2018.
Upon analysing the participants' cognitive performance and imaging results, the research team found that individuals who consumed either green tea, oolong tea, or black tea at least four times a week for about 25 years had brain regions that were interconnected in a more efficient way.
"Take the analogy of road traffic as an example -- consider brain regions as destinations, while the connections between brain regions are roads. When a road system is better organised, the movement of vehicles and passengers is more efficient and uses less resources. Similarly, when the connections between brain regions are more structured, information processing can be performed more efficiently," explained Asst Prof Feng.
He added, "We have shown in our previous studies that tea drinkers had better cognitive function as compared to non-tea drinkers. Our current results relating to brain network indirectly support our previous findings by showing that the positive effects of regular tea drinking are the result of improved brain organisation brought about by preventing disruption to interregional connections."
Next step in research
As cognitive performance and brain organisation are intricately related, more research is needed to better understand how functions like memory emerge from brain circuits, and the possible interventions to better preserve cognition during the ageing process. Asst Prof Feng and his team plan to examine the effects of tea as well as the bioactive compounds in tea can have on cognitive decline.

Story Source:
Materials provided by National University of SingaporeNote: Content may be edited for style and length.