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David Aguilera
Works at Levanter Group
Attended Fina Farra School
Lives in Tegucigalpa
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David Aguilera

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"The new study, performed by geneticists at Harvard Medical School, provides an expanded framework for researchers to study human origins, drawing upon extensive DNA sampling—10 representative modern human populations and all archaic hominid DNA sequenced. After accounting for interbreeding events involving the archaic hominids, their model features a major eastern-western population split once modern humans left Africa, dating back to at least 45,000 years ago, with Australians and New Guineans inside the eastern group."
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This video is horrible. 
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Pillars of Creation

NASA's Hubble Space Telescope has revisited the famous Pillars of Creation, revealing a sharper and wider view of the structures in this visible-light image.

Astronomers combined several Hubble exposures to assemble the wider view. The towering pillars are about 5 light-years tall. The dark, finger-like feature at bottom right may be a smaller version of the giant pillars. The new image was taken with Hubble's versatile and sharp-eyed Wide Field Camera 3.

The pillars are bathed in the blistering ultraviolet light from a grouping of young, massive stars located off the top of the image. Streamers of gas can be seen bleeding off the pillars as the intense radiation heats and evaporates it into space. Denser regions of the pillars are shadowing material beneath them from the powerful radiation. Stars are being born deep inside the pillars, which are made of cold hydrogen gas laced with dust. The pillars are part of a small region of the Eagle Nebula, a vast star-forming region 6,500 light-years from Earth.

The colors in the image highlight emission from several chemical elements. Oxygen emission is blue, sulfur is orange, and hydrogen and nitrogen are green.

Tags
Astronomical, Emission Nebulae, Hubble Telescope, Nebulae


Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
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David Aguilera

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#NERDculture : Isaac Asimov's " Three Laws of Robotics "
1- A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2- A robot must obey orders given it by human beings except where such orders would conflict with the First Law.
3- A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.

source http://www.auburn.edu/~vestmon/robotics.html
image source : http://iruntheinternet.com/lulzdump/images/future-tech-robot-balancing-karate-kid-robot-karate-kid-14192120211.gif?id=
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This is a good rendering of The Odyssey.
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Ulysses 31!
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Swiss #scientists believe that only decades remain before areas that have been covered with ice for thousands of years melt away. The melting of the long-frozen snow and ice in the Swiss Alps, and elsewhere around the world, has already yielded numerous #ancient artifacts, from hunting tools to goat-skin leggings, shoes, and #Otzi the Iceman, the remains of a man who lived more than 5,000 years ago; and they are turning up with more and more frequency as the speed of melting increases.
Swiss scientists believe that only decades remain before areas that have been covered with ice for thousands of years melt away. The melting of the long-frozen snow and ice in the Swiss Alps, and else
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Iceman Oetzi's last meal was 'Stone Age bacon'
"Oetzi the famous "iceman" mummy of the Alps appears to have enjoyed a fine slice or two of Stone Age bacon before he was killed by an arrow some 5,300 years ago."
Oetzi the famous "iceman" mummy of the Alps appears to have enjoyed a fine slice or two of Stone Age bacon before he was killed by an arrow some 5,300 years ago.
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#CoolNERDstuff - Earth and Moon from Mars #NASA
A new composite image that shows Earth and the Moon in one frame is neither the first nor the clearest of its type. Still, this recent image from a powerful telescope orbiting Mars is a humbling reminder of how small and interconnected our planet appears when viewed from afar.

The image combines two separate exposures taken on November 20, 2016, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter. The satellite was about 205 million kilometers (127 million miles) away from Earth when the images were acquired. For comparison, the circumference of the Earth at the equator is about 40,000 kilometers (25,000 miles). The distance between Earth and the Moon is about 30 times the diameter of Earth. more : http://earthobservatory.nasa.gov/IOTD/view.php?id=89491
A powerful telescope on a satellite orbiting Mars turned its gaze back on Earth.
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#CoolNERDstuff ~ #LeonardoDaVinci - Perpetual Motion Machines
Leonardo’s investigations into the possibility of perpetual motion were very thorough and scientific compared to the standards of his time. He has two pages of notes with several designs showing possible perpetual motion machines. There are 4 completed designs in total, all of which both beautiful, well thought out and ingenious. visit web site here: http://www.leonardodavincisinventions.com/mechanical-inventions/leonardo-perpetual-motion-machine/
> images source, examples of perpetual motion machines:
http://www.gizmodo.in/science/9-GIFs-That-Make-Perpetual-Motion-Machines-a-Reality/articleshow/20817305.cms
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Leonardo da Vinci : " Principles for the development of a complete mindStudy the Art of Science, study the Science of Art. Develop your senses, especially learn how to see, realize that everything connects to everything else

quote source : http://www.leonardodavincisinventions.com/

Leonardo da Vinci drawings image: http://www.leonardoda-vinci.org/
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The Shape-Shifting Army Inside Your Cells ~ Proteins work like rigid keys to activate cellular functions — or so everyone thought. Scientists are discovering a huge number of proteins that shape-shift to do their work, upending a century-old maxim of biology.
Structure equals function: If there’s one thing we all learned about proteins in high school biology, that would be it. According to the textbook story of the cell, a protein’s three-dimensional shape determines what it does — drive chemical reactions, pass signals up and down the cell’s information superhighway, or maybe hang molecular tags onto DNA. For more than a century, biologists have thought that the proteins carrying out these functions are like rigid cogs in the cell’s machinery.

Of course, exceptions would occasionally crop up. A scientist might bump into a protein that performed its functions perfectly well yet didn’t have rigid structures. Most researchers chalked these cases up to experimental error, or dismissed them as insignificant outliers.
More recently, however, biologists have begun paying attention to these shapeshifters. Their findings are tearing down the structure-function dogma.

Proteins are chains of strung-together amino acids, and recent studies estimate that up to half of the total amino acid sequence that makes up proteins in humans doesn’t fold into a distinct shape. (While some of the proteins that make up this total are unstructured from end to end, others contain long unstructured regions side-by-side with structured ones.) “Partly, people didn’t realize how big that number was, and that’s why they ignored it,” said Julie Forman-Kay, a biochemist at the Hospital for Sick Children and the University of Toronto. “And partly they just didn’t know what to think of it.”
This fluidity — dubbed “intrinsic disorder” — endows proteins with a set of superpowers that structured proteins don’t have. Folded proteins tend to bind to their targets firmly, like a key in a lock, at just one or two spots, but their more stretched-out wiggly cousins are like molecular Velcro, attaching lightly at multiple locations and releasing with ease. This quick-on-quick-off binding’s effect in the cell is huge: It allows intrinsically disordered proteins — or IDPs, for short — to receive and respond to a slew of molecular messages simultaneously or in rapid succession, essentially positioning them to serve as cellular messaging hubs, integrating these multiple signals and switching them on and off in response to changes in the cell’s environment and to keep cellular processes ticking along as they should.
Researchers are just beginning to understand how this paradigm shift will change what we know about the goings-on in the cell. Yet already, IDPs appear to have their paws in a lot of biological processes. Through their signaling prowess, IDPs help regulate the gas and brake pedals for producing proteins from the DNA code, according to evidence that has accumulated over the past decade, as well as the process by which cells divide. IDPs may also provide cues that allow cells to take on traits specific to different tissues or parts of the body. In other words, they may somehow help make a blood cell a blood cell and a muscle cell a muscle cell. Biologists are also finding that many disordered proteins are involved in neurodegenerative disorders, cancers and other diseases.
read more : https://www.quantamagazine.org/20170118-disordered-proteins/
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  • Levanter Group
    Interpreter, 2014 - present
  • Citigroup
    collection agent, 2007 - 2012
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Tegucigalpa
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  • Fina Farra School
    elementary, high school, 1979 - 1988
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June 25