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Relu Dumitru
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Amazing new view from Hubble!

Hubble Captures Vivid Auroras in Jupiter’s Atmosphere

Astronomers are using the NASA/ESA Hubble Space Telescope to study auroras — stunning light shows in a planet’s atmosphere — on the poles of the largest planet in the solar system, Jupiter. This observation program is supported by measurements made by NASA’s Juno spacecraft, currently on its way to Jupiter.

Jupiter, the largest planet in the solar system, is best known for its colorful storms, the most famous being the Great Red Spot. Now astronomers have focused on another beautiful feature of the planet, using Hubble's ultraviolet capabilities.

The extraordinary vivid glows shown in the new observations are known as auroras. They are created when high-energy particles enter a planet’s atmosphere near its magnetic poles and collide with atoms of gas. As well as producing beautiful images, this program aims to determine how various components of Jupiter’s auroras respond to different conditions in the solar wind, a stream of charged particles ejected from the sun.

This observation program is perfectly timed as NASA’s Juno spacecraft is currently in the solar wind near Jupiter and will enter the orbit of the planet in early July 2016. While Hubble is observing and measuring the auroras on Jupiter, Juno is measuring the properties of the solar wind itself; a perfect collaboration between a telescope and a space probe.

“These auroras are very dramatic and among the most active I have ever seen”, said Jonathan Nichols from the University of Leicester, U.K., and principal investigator of the study. “It almost seems as if Jupiter is throwing a firework party for the imminent arrival of Juno.” Read more: http://go.nasa.gov/294QswK

Credits: NASA, ESA, and J. Nichols (University of Leicester)
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New Life Found That Lives Off Electricity
Scientists have figured out how microbes can suck energy from rocks. Such life-forms might be more widespread than anyone anticipated.
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Garlic prevents hypertension, gout, obesity, rheumatism, arthritis, heart disease, diabetes, infections, inflammation, cancer, dementia, Alzheimer, Parkinson. To prevent smell, one can use garlic extract, tablets, not cook it, since cooking removes most benefits. Garlic has 4 times less sugars than onion per 100 grams and 6 times more protein than onion. Garlic protein is much higher quality protein, aminoacid score 84, milk is 85, lentils 86 - versus useless 22 score for onion (22 is lower than all common fruits and veggies). :)

Garlic lowers blood pressurehttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4266250/ - free full paper - Integr Blood Press Control. 2014; 7: 71–82.

Garlic prevents arthritishttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2787296/ - free full paper - Arthritis Res Ther. 2009; 11(5): R145.

Garlic alleviates rheumatismhttp://www.ncbi.nlm.nih.gov/pubmed/10515039 - Ter Arkh. 1999;71(8):55-8.

Aged or Kyolic Garlic extract (they sell it on amazon) reduces dementia, Alzheimer, Parkinson, heart disease riskhttp://www.ncbi.nlm.nih.gov/pubmed/16484570 -- J Nutr. 2006 Mar;136(3 Suppl):810S-812S.

Raw garlic lowers glucose, cholesterol, and triglyceride (by 38% even) levels, but boiled or cooked garlic cannot.http://www.ncbi.nlm.nih.gov/pubmed/16484567 -- J Nutr. 2006 Mar;136(3 Suppl):800S-802S

S-allyl cysteine sulphoxide, a garlic aminoacid, was shown to lower glucose, cholesterol, triglycerides and be almost as effective as taking insulin itselfhttp://www.ncbi.nlm.nih.gov/pubmed/1506036/ -- Indian J Exp Biol. 1992 Jun;30(6):523-6.

S-allyl cysteine sulphoxide, a garlic aminoacid, ameliorated the diabetic condition almost as much as glibenclamide and insulin. It also managed lipid peroxidation better than the two drugs.http://www.ncbi.nlm.nih.gov/pubmed/8608811/ -- Experientia. 1996 Feb 15;52(2):115-20.

Garlic oil from raw garlic was shown to reduce blood glucose, triglycerides, cholesterol, uric acid, lipid peroxides, etchttp://www.ncbi.nlm.nih.gov/pubmed/12890544 -- Comp Biochem Physiol A Mol Integr Physiol. 2003 Aug;135(4):539-47.

Garlic prevents cancerhttp://www.ncbi.nlm.nih.gov/pubmed/12570662 -- Curr Cancer Drug Targets. 2003 Feb;3(1):67-81.

Garlic prevents cancer, inflammation and oxidationhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC3915757/ -- free full paper -- Anticancer Agents Med Chem. 2014 Feb; 14(2): 233–240.

Garlic has neuroprotective effectshttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074326/ - free full paper - Libyan J Med. 2008; 3(1): 23–33.

Garlic is hypothesized to prevent obesityhttp://www.ncbi.nlm.nih.gov/pubmed/21840827 - Acta Biol Hung. 2011 Sep;62(3):244-54.

Garlic (select 100 g) ► http://nutritiondata.self.com/facts/vegetables-and-vegetable-products/2446/2

Onion (select 100 g) ► http://nutritiondata.self.com/facts/vegetables-and-vegetable-products/2501/2


VEGANISM

For 100+ reasons I didn't eat meat for 20 years and dairy for 12 years seehttps://plus.google.com/+AlexP/posts/UsxcV9Bycsb
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Architect and illustrator Rafael Araujo (previously) drafts beautiful three-dimensional spaces in a studio without technology, connecting himself back to nature while he meticulously demonstrates the Golden Ratio's role in the natural world. In an attempt to pass on this meditative quality
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The Physics Girl: Standing Waves on Chladni Plates

Do you know that you can use physics to create cool patterns on a vibrating metal plate? The Physics Girl demonstrates how. So tune in to see and hear some amazing physics about vibrations, waves, and resonance.

https://www.youtube.com/watch?v=wYoxOJDrZzw‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬

And if you want to learn more about the resonance and standing waves, then visit our Tutorial page on the very topic at ...

http://www.physicsclassroom.com/class/sound/Lesson-4/Standing-Wave-Patterns‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬
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Look at that solid body of ice and dust! We're checking in with comet #67P , seen here by #Rosetta   #OSIRIS camera on 8 June from a distance of 30 km.

Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
 
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SciTech #ScienceSunday Digest - 25/2016.
Permalink here: http://www.scitechdigest.net/2016/06/nanostructured-dna-frameworks-brain.html

Nanostructured DNA frameworks, Machine learning, Brain structure insights, Improving gene drives, Wondrous graphene, Metagenomic analysis, Ultrasound BBB, Terahertz microlasers, Invisible sensors, Boosting stem cells.

1. DNA Framework for Nanostructures
DNA origami techniques are being used to form precisely structured, self-assembled nanoparticle lattices with custom architectures https://www.bnl.gov/newsroom/news.php?a=11846. The technique is based on forming modular lego-brick-like frames made of DNA that bind nanoparticles in the center of the frame and then link to other frames in precise orientations and positions, allowing custom 3D lattices to be formed as desired. There are very interesting possibilities here in forming interesting materials for optics (metamaterials), electronics, and other applications. In related news, precise modular molecular construction is becoming ever more sophisticated http://www.oist.jp/news-center/news/2016/6/10/new-ukidama-nanoparticle-structure-revealed and http://science.energy.gov/bes/highlights/2016/bes-2016-06-w/.

2. Machine Learning Advances
An interesting trio of machine learning applications this week. First, we have the demonstration of a system able to take a rough sketch (of a face for example) and generate a photo-realistic image as an output https://www.technologyreview.com/s/601684/machine-vision-algorithm-learns-to-transform-hand-drawn-sketches-into-photorealistic-images/. Second, a dashcam app for cars that tracks other cars on the roads, rates their driving, and warns users of dangerous or erratic drivers when nearby and which has interesting insurance and other implications http://spectrum.ieee.org/cars-that-think/transportation/sensors/the-ai-dashcam-app-that-wants-to-rate-every-driver-in-the-world. Finally, a system that can perform accurate eye-tracking using just a smartphone camera and which should open up eye-tracking tools and applications for developers generally http://news.mit.edu/2016/eye-tracking-system-uses-ordinary-cellphone-camera-0616.

3. Brain Structure Insights
A work shows why hierarchical networks appear so often in biology and particularly govern neurons in the brain http://www.eurekalert.org/pub_releases/2016-06/p-rsw060716.php. Hierarchical networks contain fewer connections and the connections themselves - synapses in the case of the brain - are biologically expensive to build and maintain and so are ultimately driven by energy optimisation concerns. Such insights are expected to feed into designing better artificial neural networks. In related news birds turn out to have a much higher density of neurons in their brains, particularly the forebrain, compared to other animals including primates and in some cases match or exceed primate neuron counts, which helps to explain the intelligence exhibited by some bird species http://news.vanderbilt.edu/2016/06/study-gives-new-meaning-to-the-term-bird-brain/.

4. Improving the Effectiveness of Gene Drives
It turns out the current gene drive technology, of ensuring that particular genes are carried throughout a population over many successive generations, and offering the possibility of wiping out traits or whole species, are imperfect and suffer from the evolution of resistance to their effects. Second and third generation gene drive technology is under development however that is far more sophisticated and designed to avoid this evolution of resistance and ensure traits are passed down or local populations of species wiped out regardless of attempts to evolve resistance https://www.newscientist.com/article/2093212-souped-up-gene-drives-may-help-eliminate-pests-and-diseases/.

5. Never Ending Graphene Wonders
First, graphene is being used to produce and control a form of Cerenkov Radiation, in which light hitting the graphene surface is slowed to a point at which electrons travelling along the surface exceed the speed of light and produce a different burst of electromagnetic radiation http://news.mit.edu/2016/new-way-turn-electricity-light-using-graphene-0613. Second, tiny graphene “drums” beating at 100Mhz might be used as highly sensitive mass detectors http://www.eurekalert.org/pub_releases/2016-06/tiof-dbf061416.php. Third, graphene nanoribbons can now be fabricated wafer-scale in suspended non-contact structures http://www.tohoku.ac.jp/en/press/shaping_atomically_thin_materials.html. Finally, another straintronics approach, squeezing graphene can control heat conduction through the material http://www.research.a-star.edu.sg/research/7519/graphene-based-thermal-modulators.

6. Metagenomic Cross Genome Analysis
A metagenome is the total DNA content from many different microorganisms that inhabit the same environment, for example in the human gut. MetaFast is a new piece of software developed to quickly analyse and compare different metagenomes from both similar and different environments http://www.eurekalert.org/pub_releases/2016-06/iu-pmw061516.php. For example, MetaFast might quickly compare the metagenomes of the gut microflora from both healthy and unhealthy patients and feed this into personalised medicine applications, or otherwise rapidly characterise a person or environment as healthy or unhealthy, even without knowing the exact identity of all of the microorganisms being considered.

7. Opening Blood Brain Barrier with Pulsed Ultrasound
In recent work the blood brain barrier can be temporarily opened by using focused pulsed ultrasound to vibrate stabilised (but short-lived) microbubbles that have been injected into the bloodstream https://www.newscientist.com/article/2093829-microbubbles-open-brains-barrier-to-make-chemo-more-effective/. One of the current drawbacks is that the ultrasound device must be placed inside the skull; however in clinical trials the technique was able to deliver five times the amount of a cancer drug into the brain to treat glioblastoma tumours than would otherwise be possible. Such a platform, with further improvements, might be widely applicable to a range of brain and CNS treatments and interventions.

8. Phase-Locked Microlaser Arrays
A single-chip monolithic array of 37 microfabricated laser antennas produces one of the most advanced terahertz light sources created http://news.mit.edu/2016/microlasers-phase-locking-arrays-0613. Each antenna is coaxed to phase-lock with its neighbours to produce a combined light source that is all in-phase, while lateral emissions are recaptured and re-emitted perpendicular to the array to form a very tight terahertz beam source with very low energy requirements. This is another important step in terahertz technology, bringing it closer to real world applications in security and medical diagnostics.

9. Sensors Invisible to Electronic Inspection
Sensors have been rendered invisible to thermal and electrical inspection with a new type of thin copper shell that mimics local thermal and electric fields, while still allowing the enclosed sensor to perform its function and receive appropriate signals from the outside http://news.nus.edu.sg/press-releases/10458-nus-engineering-team-designs-novel-multi-field-invisible-sensor. Such a technology not only has important applications in the security and surveillance space, but also for sensing systems forced to operate in high voltage or high temperature environments.

10. Replacing and Boosting Stem Cells
It appears that most current stem cell treatments don’t involve the introduced cells integrating with target tissues, but rather temporarily alter the local stem cell niche and signalling environment to spur healthy activity in surrounding cells. More recent work is starting to achieve more permanent integration however, particularly with neural stem cells in neurodegenerative disorders https://www.fightaging.org/archives/2016/06/replacing-neural-stem-cells-in-the-aging-hippocampus/. Also, improved techniques for reprogramming adult stem cells appear to produce cells that are indistinguishable from embryonic stem cells http://futurism.com/scientists-reprogram-adult-stem-cells-to-mimic-embryonic-stem-cells/.

SciTech Tip Jar: http://www.scitechdigest.net/p/donate.html
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Matt Strassler originally shared:
 
#LIGO detects a second merger of black holes #fb

There’s additional news from LIGO (the Laser Interferometry Gravitational Observatory) about gravitational waves today. What was a giant discovery just a few months ago will soon become almost routine… but for now it is still very exciting… LIGO got a…
There’s additional news from LIGO (the Laser Interferometry Gravitational Observatory) about gravitational waves today. What was a giant discovery just a few months ago will soon become almos…
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În ce mă privește pot spune că dacă vreți să beți o cafea bună, să vă aduceți de acasă. Cafeneaua "Bună ziua" n-are nici o legătură cu cafeaua. Dar are terasă, așa că barem puteți lua un suc la țigară. În nici un caz cafea.... Să aveți noroc !
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Patru angajați se fîțîie degeaba, un angajat încasează. Coadă ca pe vremuri. A doua casierie - Off. Asta-nseamnă NESIMTIRE (și prostie) cu carul.
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