Figure 1. In recent years, the coating of low-quality jadeite has reemerged in the Chinese markets. These coated jadeites (1.43–2.71 ct) were examined in the study. Photo by Jian Zhang. ABSTRACT Ten ...

An 18-year study reveals dramatic year-to-year variations in ultraviolet radiation penetration tied to Sierra Nevada ...

Subsequently, the maximum and minimum UV absorbance of proteins vary as a function of amino acid composition. This supplies a rudimentary technique of measuring the purity of known proteins and amino ...

The V-670 double-beam spectrophotometer utilizes a unique, single monochromator design covering a wavelength range from 190 to 2700 nm (3200 nm option). The monochromator features dual gratings ...

The V-650 is a double-beam spectrophotometer with a photomultiplier tube (PMT) detector. The high sensitivity of the PMT enables accurate measurements of low (and high) concentration samples. By ...

Betterial® Desert PV Encapsulant Film has secured certification from TÜV Rheinland and CPVT and is now deployed at CPVT's Northwest China Desert Validation Base (40.3°N, 94.5°E) for multi-year field ...

Northern lights may be visible in these 18 US States tonight due to ongoing geomagnetic storm conditions. Here are the best places to see them.

Americans in some northern U.S. states may have another opportunity to catch a glimpse of the night sky's greatest spectacle. The northern lights are slated to be visible in states from Idaho to ...

New Yorkers may have another rare chance to witness one of the night sky’s most dazzling displays — the northern lights. The aurora borealis could be visible over parts of New York and other ...

A severe solar storm on Sunday has ignited hopes for a dazzling display of northern lights farther south than usual in the United States and maybe even across Illinois skies. Michigan may also get ...

Kentucky’s tornado occurred during a broader multi-day severe weather outbreak that also saw deadly storms in Missouri and Virginia. Between May 15 and May 19, the U.S. Storm Prediction Center ...