The concentrations of sodium alginate and rosuvastatin were determined by spectrophotometric methods, whose calibration curves were obtained by measuring the absorbance at the wavelength of maximum ...

On Monday, Sigma introduced its latest full-frame mirrorless digital camera—the BF—with a radically simple design. Featuring a 24.6 MP full-frame (35mm) sensor, it has just three physical buttons, ...

Here’s how it works. If you're looking for a lightweight lens that can do everything from super wide-angle landscapes to telephoto wildlife, then the Sigma 16-300mm f3.5-6.7 Contemporary lens could be ...

I've spent the past couple of days at Sigma headquarters and the Sigma factory in Japan, getting intimately acquainted with the new Sigma BF – perhaps the most beautiful camera I've ever seen, and one ...

Sigma has announced the 300-600mm F4 DG OS Sports lens, designed specifically for applications like sports, action and wildlife photography. Recent Videos Optically, the lens is built around 28 ...

It's a compact mirrorless body with a single rear-plate dial and three buttons that provide haptic feedback when pressed. Sigma says the interface has been designed to be simple and "intuitive." Other ...

The Sigma BF features simplified controls on the back, a redesigned user interface, and 230GB of built-in storage. The Sigma BF features simplified controls on the back, a redesigned user ...

Sigma's minimalist BF is machined from a single piece of aluminum It features Sigma's L-mount and a 24MP full-frame sensor with 6K video There's only 230GB of internal storage, and no memory card ...

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. Polypyrrole/polyaniline-poly(vinyl alcohol) (PPy ...

Foods high in sodium may not always be so easy to spot. Even if you never reach for the salt shaker, you probably eat more sodium than you realize. More than 70% of the sodium in our diets comes from ...