Search results
Results From The WOW.Com Content Network
In the laboratory samples may be prepared by treating acetylene with a solution of lithium in ammonia, on −40°C, with creation of adduct of Li 2 C 2 ·C 2 H 2 ·2NH 3 that decomposes in stream of hydrogen at room temperature giving white powder of Li 2 C 2. C 2 H 2 + 2 Li → Li 2 C 2 + H 2. Samples prepared in this manner generally are ...
Ligation-independent cloning (LIC) is a form of molecular cloning that can be performed without the use of restriction endonucleases or DNA ligase.The technique was developed in the early 1990s as an alternative to restriction enzyme/ligase cloning. [1]
Samples at a constant time from the streamline would still be used, but instead of averaging all pixels in a streamline with a static kernel, a ripple-like kernel constructed from a periodic function multiplied by a Hann function acting as a window (in order to prevent artifacts) is used. The periodic function is then shifted along the period ...
The night was capped off with a Willie Nelson concert. And no, this wasn’t Willie's high-rollin' White House visit – it wasn’t until two years later that Nelson famously joined Carter’s ...
Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.
Free at-home COVID tests (you can order yours here) are also available to help you determine if your symptoms are from COVID-19 or from something else. Flu. Symptoms.
All calls are toll-free and confidential. The hotline is available 24/7 in more than 170 languages. Read the original article on People. Show comments. Advertisement. Advertisement.
No. Name Company Country [b] Launched Monthly active users Other metrics 1. Zoom: Zoom Video Communications United States 2012 300 million daily participants [39]: 2. Meet