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Archive for the ‘chemistry’ category: Page 267

Sep 10, 2016

Study claims: Chinese Civilization Come From Ancient Egypt

Posted by in category: chemistry

On a cool Sunday evening in March, a geochemist named Sun Weidong gave a public lecture to an audience of laymen, students, and professors at the University of Science and Technology in Hefei, the capital city of the landlocked province of Anhui in eastern China. But the professor didn’t just talk about geochemistry. He also cited several ancient Chinese classics, at one point quoting historian Sima Qian’s description of the topography of the Xia empire — traditionally regarded as China’s founding dynasty, dating from 2070 to 1600 B.C. “Northwards the stream is divided and becomes the nine rivers,” wrote Sima Qian in his first century historiography, the Records of the Grand Historian. “Reunited, it forms the opposing river and flows into the sea.”

In other words, “the stream” in question wasn’t China’s famed Yellow River, which flows from west to east. “There is only one major river in the world which flows northwards. Which one is it?” the professor asked. “The Nile,” someone replied. Sun then showed a map of the famed Egyptian river and its delta — with nine of its distributaries flowing into the Mediterranean. This author, a researcher at the same institute, watched as audience members broke into smiles and murmurs, intrigued that these ancient Chinese texts seemed to better agree with the geography of Egypt than that of China.

In the past year, Sun, a highly decorated scientist, has ignited a passionate online debate with claims that the founders of Chinese civilization were not in any sense Chinese but actually migrants from Egypt. He conceived of this connection in the 1990s while performing radiometric dating of ancient Chinese bronzes; to his surprise, their chemical composition more closely resembled those of ancient Egyptian bronzes than native Chinese ores. Both Sun’s ideas and the controversy surrounding them flow out of a much older tradition of nationalist archaeology in China, which for more than a century has sought to answer a basic scientific question that has always been heavily politicized: Where do the Chinese people come from?

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Sep 6, 2016

Quantum Computers Are Coming, and the World Might Not Be Ready

Posted by in categories: chemistry, computing, finance, quantum physics

Computadores qu nticos estão chegando. O mundo pode não estar pronto.
A mec nica qu ntica, Carl Sagan observou certa vez, é tão estranho que o “senso comum é quase inútil em se aproximar dela.” Os cientistas ainda não entendem exatamente por que a matéria se comporta como faz no nível qu ntico. No entanto, eles estão ficando melhor a exploração dos seus din mica peculiar — de maneiras que podem em breve revolucionando o negócio tecnoloco.

Não é surpresa, então, o investimento no campo está crescendo. IBM, Microsoft e Google são todos construção de laboratórios de pesquisa qu ntica. Startups estão se preparando. Os bancos estão muito interessados na verdade. Governos ver aplicações para a exploração espacial, a investigação médica e de coleta de inteligência. Agência de Segurança Nacional dos Estados Unidos, na verdade, foi discretamente tentando construir um computador qu ntico, durante anos, na esperança de que ele iria fazer um código-breaker imparável.

Via Bloomberg.

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Aug 31, 2016

Methuselah Foundation Fellowship Award Winner Tackles Research in Macular Degeneration

Posted by in categories: biotech/medical, chemistry, education, mathematics

Our friends at the Methuselah Foundation are working on macular degeneration.


Typically, a fellowship and participation in a research study to cure a major disease would occur years after completing undergrad, possibly even after earning a PhD. But Jennifer DeRosa is not a typical student.

As early as high school, DeRosa was already in the lab, conducting research in plant biotechnology at the College of Environmental Science and Forestry (SUNY-ESF) before graduating valedictorian from Skaneateles High School. As a freshman student at Onondaga Community College, she continued to develop skills in molecular biology, analytical chemistry, and cell biology. She logged over 1,600 hours in academic and industry laboratories while maintaining a perfect 4.0 GPA, completing her associate’s degree in Math and Science in only one year.

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Aug 22, 2016

Now we can watch DNA Repair itself!

Posted by in categories: biotech/medical, chemistry

Watching DNA self-repair itself.


After 2015’s Nobel Prize in chemistry was awarded for advancements in our understanding of DNA repair, a recent Nature report characterises the mechanism in molecular detail. The implications for cancer research are vast.

Researchers in Paris, France, and Bristol, England, have leveraged recent advances in microscopy and fluorescent imaging to characterise the entire process of DNA repair at the molecular level. They were able to observe RNA polymerase, which ‘reads’ DNA and initiates its replication, as it moved along the DNA strand.

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Aug 15, 2016

Moving metal promises dynamic circuits

Posted by in categories: chemistry, futurism

Scientists have developed self-propelling liquid metals that could be used for future electronic circuits.

Current electronic technology is based on solid state components with fixed metallic tracks and semiconductors. Researchers are investigating soft circuit systems that act like live cells, communicating with each other to form new circuits when possible. In one study, Professor Kalantar-zadeh from RMIT University in Australia, along with his researchers immersed a number of different metallic elements, in the form of liquid droplets, in water.

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Aug 14, 2016

Revolutionary computer program could change chemistry forever

Posted by in categories: biotech/medical, chemistry, computing

Nice.


Software can tell chemists how to make new molecules from scratch and its inventors claim it has already mapped out a cheaper route to a blockbuster drug.

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Aug 11, 2016

Quantum dots with impermeable shell used as a powerful tool for “nano-engineering”

Posted by in categories: 3D printing, chemistry, engineering, nanotechnology, quantum physics, wearables

I never get tired of talking about the many uses for Q-dot technology. One area that has me even more intrigued is how it is used in crystallized formations. I expect to see more and more experimenting on crystalized formations on many fronts including complex circuitry for performance and storage.

And, with synthetic technology today plus 3D printing along with Q-dots we could (as I have eluded to many times over several months) truly begin to see some amazing technology be developed on the wearable tech front.

Wearables could include synthetic circuitry stones in various accessories to not only store information, but also serve as another form of unique id because in synthetic stones we have been able (like in nature) create complex crystalized formations that are each unique/ 1 of a kind like a unique finger print, or iris of an eye. I expect to see some very interesting things coming in this space.

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Aug 11, 2016

The laws of nature make life on other planets inevitable — according to this groundbreaking theory

Posted by in categories: alien life, biological, chemistry, physics

According to theoretical physicist and super-genius Stephen Hawking, “The human race is just a chemical scum on a moderate-sized planet orbiting round a very average star in the outer suburb of one among a hundred billion galaxies.” Indeed, to most modern scientists we are nothing more than an entirely random ‘happy accident’ that likely would not occur if we were to rewind the tape of the universe and play it again. But what if that is completely wrong? What if life is not simply a statistical anomaly, but instead an inevitable consequence of the laws of physics and chemistry?

A new theory of the origin of life, based firmly on well-defined physics principles, provides hefty support for the notion that biological life is a “cosmic imperative”. In other words, organic life had to eventually emerge. If such a theory were true, it would mean that it is very likely that life is widespread throughout the universe.

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Aug 10, 2016

Chemical Switch Engineered into a Light-Driven Proton Pump

Posted by in categories: bioengineering, biotech/medical, chemistry, physics

Synthetic biology is an emerging and rapidly evolving engineering discipline. Within the NCCR Molecular Systems Engineering, Scientists from Bernese have developed a version of the light-driven proton pump proteorhodopsin, which is chemically switchable and it is also an essential tool to efficiently power synthetic cells and molecular factories.

Synthetic biology is a highly complex field with numerous knowledge branches that incorporate physics, biology, and chemistry into engineering. It aims to design synthetic cells and molecular factories with innovative functions or properties that can be applied in medical and biological research or healthcare, industry research.

These artificial systems are available in the nanometer scale and are developed by assembling and combining current, synthetic or engineered building blocks (e.g., proteins). Molecular systems are applicable for a wide range of applications, for instance these systems can be used for waste disposal, medical treatment or diagnosis, energy supply and chemical compound synthesis.

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Aug 4, 2016

New way to model molecules

Posted by in categories: biological, chemistry, computing, encryption, quantum physics, robotics/AI, solar power, sustainability

Magine a future in which hyper-efficient solar panels provide renewable sources of energy, improved water filters quickly remove toxins from drinking water, and the air is scrubbed clean of pollution and greenhouse gases. That could become a reality with the right molecules and materials.

Scientists from Harvard and Google have taken a major step toward making the search for those molecules easier, demonstrating for the first time that a quantum computer could be used to model the electron interactions in a complex molecule. The work is described in a new paper published in the journal Physical Review X by Professor Alán Aspuru-Guzik from the Department of Chemistry and Chemical Biology and several co-authors.

“There are a number of applications that a quantum computer would be useful for: cryptography, machine learning, and certain number-theory problems,” Aspuru-Guzik said. “But one that has always been mentioned, even from the first conceptions of a quantum computer, was to use it to simulate matter. In this case, we use it to simulate chemistry.”

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