18
Dec2015
By Indian Institute of Technology, copy of image in Robert Stirling's patent of 1816. Wikimedia CommonsA remarkable engine now called the Stirling engine was developed and patented in 1816 by a 25-year-old Scottish clergyman named Robert Stirling. Stirling was devoted to the clergy but inherited a love of engineering from his father and his grandfather, who was the inventor of the threshing machine. Some historians believe that Robert invented his new engine to replace the dangerous steam engines of that time. Even though the Stirling engine was utilized in small, domestic projects, it was never developed for common use and was eventually overtaken by cheaper and more efficient versions of the steam engine and small, internal combustion engines.
04
Dec2015
OSTI's new data center enclosureFor the Office of Scientific and Technical Information (OSTI) to fulfill our mission to “advance science and sustain technological creativity by making R&D findings available and useful to Department of Energy researchers and the public,” it’s important to have an information technology (IT) infrastructure up to the task of performing 40 million human transactions per year, which requires 24/7/365 availability. At OSTI, we take pride in delivering high-availability systems, which translates to consistently reliable web-based services available at full capacity to our end users. We work to minimize any downtime in the availability of our vast electronic scientific collections, but in case you have ever experienced that rare occasion when a product wasn’t available, we would like to explain what happens “behind the curtain” during scheduled maintenance windows.
01
Dec2015
Image credit: Lawrence Berkeley National LaboratoryMicrobes – bacteria, fungi, protozoa, algae, and viruses – are the engines of life. Microbiomes or microbe communities account for 60% of living matter and are the most diverse life form on earth. The problem is that very little is understood about microbes and how they relate to our planet. For a long time, microbes have had a bad reputation. Bad microbes, better known as “germs,” have caused infectious diseases such as the bubonic plague, malaria, polio, HIV, and Ebola. Advances in gene-sequencing technology have expanded our knowledge of microbiomes. Once thought to be only harmful, scientists now know that we cannot live without microbes.
12
Nov2015
The Department of Energy (DOE) Office of Scientific and Technical Information (OSTI) acquires, manages, preserves, and disseminates DOE scientific and technical information (STI) such as technical reports, journals articles, videos, scientific research data, and in other forms and formats.
However, this STI does not stand alone. It is always a part of a larger picture. It could be the result of research by a Nobel Laureate or a remarkable advance in science; it could have significant economic impact or have improved people’s lives; and it could be involved in many other things, such as enabling space exploration.
“What?” you ask, “Enable space exploration?”
Yes, RTGs (Radioisotope Thermoelectric Generators) that were developed by DOE have supported space exploration since the early 1960s with the Surveyor program and continue through today. Today RTGs are powering the New Horizons space probe, which recently flew past Pluto; the Voyager, which recently entered interstellar space; the Mars rover Curiosity; and the Cassini that is orbiting Saturn. RTGs have also powered the Apollo missions, the lunar lander, the Viking missions to Mars, and the Pioneer, Ulysses, and Galileo missions. And the RTG has made the movies: it keeps Matt Damon warm in “The Martian.”
03
Nov2015
Sometimes difficulties turn out to be blessings in disguise – especially in research. An excellent example is the story of how crystals that were too bent for their intended purpose inspired the use of deliberately bent crystals to resolve properties of X-ray pulses.
Image credit: Matt Beardsley, SLAC National Accelerator LaboratoryResearchers at the Stanford Linear Accelerator Center (SLAC) reported that custom ultra-thin silicon crystals were ordered for an instrument in an effort to split X-ray pulses from SLAC’s Linac Coherent Light Source (LCLS). Researchers needed near perfect crystals to obtain precise measurements on a pulse-by-pulse basis to correctly obtain the best results. It was discovered that one batch of silicon crystal samples they received unfortunately had wrinkles, apparently bent during their processing. Measuring the curvature led these researchers to an important breakthrough. When they sent LCLS pulses through a bent crystal, they were able to divert a small part of the light and break it into its component wavelengths for color analysis while the bulk of the light went downstream for experiments.
