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OSTIblog Articles in the SciTech Connect Topic

The Higgs boson - a turning point in history

The Large Hadron Collider tunnel at CERN.

Turning points in history – things or events that define lasting change in the world we know.  The industrial revolution, Henry Ford’s automobile, penicillin, Einstein’s theory of relativity, firsts in aviation and space, the discovery of electricity, and the digital computer invention were some of these turning points. The landmark observation of the long sought Higgs-like particle or boson in July 2012 is such a turning point.

The Higgs had been the last undiscovered particle predicted by the Standard Model, a theory that describes the fundamental particles of matter and the interactions that work between them.  Using massive amounts of data from the Large Hadron Collider, international collaborations announced in March 2013 that new evidence strengthens the case that scientists have discovered a Higgs boson and appears to confirm that a Higgs field really exists.  Understanding the mysteries of our universe - why particles have mass and why we and everything about us exist - is just beginning...

Related Topics: collaboration, higgs boson, large hadron collider, standard model, SciTech Connect

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SciTech Connect: Subject and Author Filters

by Tim Byrne 24 Jul, 2013 in Products and Content

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One of the nice features of SciTech Connect is the ability to filter search results by subject and author.  On the Search Results page, these filters are midway down the left side.

The full SciTech Connect database contains over 2.5 million citations.  Filtering the full database by subject [23 MB AVI] shows the top subject in the database to be materials science with 184,200 citations.  Not too far down the top ten list you will also find materials with another 127,916 citations.  While this shows that SciTech Connect is quite strong in this area, the rest of the top subjects are good indicators of the diversity of scientific disciplines found in SciTech Connect.  Note especially environmental sciences as the ninth most frequent subject term.

  • materials science (184,198)
  • elements (174,970)
  • physics (174,180)
  • organic compounds (172,389)
  • design (157,517)
  • oxygen compounds (145,684)
  • chemical reactions (142,736)
  • materials (127,924)
  • environmental sciences (127,863)
  • fuels (123,001)

Selecting the Electronic Full-Text tab and filtering by subject [18 MB AVI] will give you a significantly different list of top ten subjects.  Materials science is still high on the list, along with design and environmental sciences, but the other seven subjects are new. 

Plasmas - The Greatest Show on Earth

Alternate Text PlaceholderPerhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset.  Observers often call it the greatest show on Earth.

Auroras are triggered by geomagnetic storms when gusts of solar plasma wind strike the Earth’s magnetic field; charged particles rain down over the north and south magnetic poles, lighting up the atmosphere and causing the air to glow. In the northern latitude, this display is known as the aurora borealis or northern lights and in the southern latitude, it is known as aurora australis or southern lights.  Like lightening, auroras are one of the few naturally-occurring plasmas found here on Earth.

Plasma science involving both natural and artificially produced plasma encompasses a variety of science disciplines ranging from plasma physics, atomic and molecular physics, chemistry, energy security, advanced space propulsion, and material science.  Plasma’s unique behaviors and characteristics make them useful in a large and growing number of scientific and industrial applications important to our universe.  

DOE researchers are making significant progress in this...

Related Topics: ambient-gas, auroras, geomagnetic storms, microwave thrusters, nanomaterials, OSTI collections, plasma, spaceship propulsion, William Watson, SciTech Connect

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Out of the past and into the future

Norris Lake

If you look closely, you can find fossilized material on the banks of the Norris Lake shoreline in Anderson County, Tennessee when the Tennessee Valley Authority (TVA) lowers the water level.  If you are really lucky, you will find traces of sea creatures or beautiful flora or fauna impressions encased between the freshly exposed layers of rock. These are ancient treasures from our country’s rich geological history.

A paleogeography reconstruction of the Earth took place some 56 to 34 million years ago during the Eocene geologic period of time .  At the beginning of the Eocene, high temperatures and warm oceans created a hothouse world.  Continents drifted toward their present positions. As Australia split from the southern continent, a cold water channel developed between the two continents and a global cooling trend began.  In western North America, mountain building started and huge lakes formed.  Oil shale was formed by deposition of silt and organic debris on lake beds and on the ocean floor.

Many of the oil shale deposits and fossil zones around the world were formed during this period of time.  The Green River Formation in the United States records 6 million years of Eocene sedimentation in a group of mountain lakes in the three basins of Colorado, Wyoming, and Utah. The U.S. Geological Survey estimates that 1.5 trillion barrels of...

Related Topics: Eocene, extraction, geological, Green River Formation, Oil Shale, paleogeography, water, SciTech Connect

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Introducing SciTech Connect

SciTech Connect

 

With the release of SciTech Connect, OSTI is expanding its deployment of semantic search, an innovative technology to improve the quality and relevance of search results across the majority of its DOE content.  Semantic search is a way to enhance search accuracy contextually. Rather than relying on search algorithms that identify a specific query term, semantic search uses more complex contextual relationships among people, places and things. It is an especially effective search approach when a person truly is researching a topic (rather than trying to navigate to a particular destination).

OSTI Director Walt Warnick has said this about SciTech Connect:  “Now, with SciTech Connect, we are expanding deployment of innovative semantic search technology to make DOE R&D results easier to retrieve and thereby better serve our dual core mission – getting DOE results out to the scientific community and beyond, and getting the community’s results into DOE.”

SciTech Connect contains all the full-text documents and citations previously found in Information Bridge and Energy Citations Database. Thus, SciTech Connect contains over sixty-five years of energy-related citations created and/or collected by OSTI. There are over 2.5 million citations, including citations to 1.4 million journal articles, 364,000 of which have digital object identifiers (DOIs) linking to full-text articles on publishers’ websites.  SciTech Connect also has over 313,000 full-text DOE sponsored STI reports; most of these are post-1991, but close to 85,000 of the reports...

Related Topics: STI reports, SciTech Connect, Energy Citations Database (ECD), Information Bridge (IB)

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It's been a big summer for sharing science info--and it's still only June!

OSTI News

Did you know:

  • That now you can find research from China when you search within WorldWideScience.org?  OSTI was in Ottawa June 10 helping formalize the addition of China to the WorldWideScience Alliance? In addition, now you can quickly narrow your WorldWideScience.org results list to the research you need, share them on social networking sites, bookmark your search, and set up alerts.
  • That now you can learn about OSTI tools and services on our OSTI YouTube site launched in June?
  • That you can Adopt-A-Doc? OSTI launched a new site for this tool in June that puts you in the driver's seat for helping make important research available online.
  • That you can now more easily navigate and find exciting scientific discoveries, search tools, and science information of interest to you by using OSTI's redesigned home page (launched June 10).
  • That from June 14 to June 17, close to 6,000 librarians and participants in the Special Librarian Associations 2009 Conference in Washington DC were afforded the opportunity to learn about OSTI's special librarian tools, and search engines just for science - DOE Science Accelerator (DOE collections), Science.gov (U.S. sources), and ...

    Related Topics: youtube, SciTech Connect, Science.gov, Adopt-A-Doc, OSTI Youtube Channel, Science Accelerator

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