This article delves into advancements in green chromatography, focusing on how innovative HPLC column design can drive ...

Lastly, a study on chlorobenzene-acetonitrile solutions examined the ... used to describe the dielectric relaxation behavior of polar materials. Kirkwood Correlation Factor: A parameter that ...

The mobile phases were A (water +0.1% formic acid +5 mM ammonium acetate) and B (acetonitrile), and a Vanquish LC ultra ... The eluents for the positive polarity mode were eluent A (0.1% FA in Water) ...

Solvents A and B consisted of acetonitrile: MilliQ water (6:4 v/v ... for a large majority of lipids with the single-phase method, at 99%, especially for polar lipids. The high recovery of the ...

There's something about polar bears that's always puzzled the people who study them. How do they seem to repel snow? The animals spend their lives in cold climates, sometimes rolling around in ...

Researchers at Leipzig University have developed a new process for reversing the polarity of chemical compounds, also known as umpolung, for the precise synthesis of pharmaceuticals. "This ...

The system, known as a polar vortex, is forecast to bring subzero temperatures to the Midwest, Mid-Atlantic and deep into the South. And it looks as if we may get more arctic blasts in the coming ...

The first is the polar jet stream, a huge current of air that circles the globe between 50 and 60 degrees north latitude within the low-altitude troposphere, the same layer of atmosphere where ...

The polar vortex, a swirling mass of cold air located over the polar regions, is responsible for the cold. It's bringing extreme cold as far as the Deep South. Overnight lows will be well below ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...