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Formation

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  • Powerful X-ray beams unlock secrets of nanoscale crystal formation

    High-energy X-ray beams and a clever experimental setup allowed researchers to watch a high-pressure, high-temperature chemical reaction to determine for the first time what controls formation of two different nanoscale crystalline structures in the metal cobalt. The technique allowed continuous stu more

  • A new way to gauge the growth of nanowires

    In a new study, researchers from the U.S. Department of Energy's (DOE) Argonne and Brookhaven National Laboratories observed the formation of two kinds of defects in individual nanowires, which are smaller in diameter than a human hair. These nanowires, made of indium gallium arsenide, could be usef more

  • Discovering new field affecting metals solidification

    A fundamental discovery that alters our current understanding of how metals solidify and form crystalline patterns may help lead to better control of casting and welding processes. It also explains how snowflakes and many mineral patterns form naturally. Reexamining data from his 20-year-old NASA ex more

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  • Automated Dynamic Light Scattering

    DLS analysis is a widely applied, non-invasive method for measuring the effective size of molecules in solution. This technique yields valuable information for the characterization of molecules and particles. It facilitates formerly laborious and tim more

  • The Danger of Air & Bubbles

    Air and bubbles, or fluid aeration and cavitation, can cause numerous problems in a hydraulic and lubrication oil system. Lubrication practitioners should be attentive to abnormal noise, poor component response due to spongy behavior of aerated fluid more

  • Battling Corrosion in Refineries

    Corrosion in refinery operations has been, and still is, the subject of many studies, papers, courses and web forums. Although a lot of what has been written shows that significant progress in understanding corrosion has been made, it also makes it more

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Definition

Chalk Formation

Chalk Formation , part of the extensive Southern England Chalk Formation . The Chalk Formations of Europe are thick deposits of chalk , a soft porous white limestone , deposited in a marine environment during the upper Cretaceous Period. They a ... more

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