New shade of grey: Pompeii study reveals ancient Roman artists' pigment techniques
A recent study offers new insights into the pigments used by ancient Roman artists in Pompeii, revealing how they mixed raw ...
Taiwan News5 天
Lithopone Market to Reach $218.6 Million by 2027, Growing at a 3.3% CAGR
The global Lithopone market was valued at $169.8 million in 2019, and is projected to reach $218.6 million by 2027, growing at a CAGR of 3.30% from 2020 to 2027. Lithopone is an inorganic white ...
WebMD9 天
What Is an Air Contrast Barium Enema?
After that, they will put a lubricated tube into your rectum. The tube connects to a bag of barium sulfate solution. The technician will slowly pump the solution through your intestine ...
来自MSN7 个月
Scientists created the world's whitest paint. It could eliminate the need for air conditioning.
Two features make this paint ultra-white: a very high concentration of a chemical compound called barium sulfate – also used in photo paper and cosmetics – and different particle sizes of ...
Nature3 年
Video 1 - Videofluoroscopy of deglutition and primary peristalsis.
The subject swallows a mouthful of barium sulfate, which is then propelled down the esophagus and into the stomach by a peristaltic contraction wave.
BBC2 年
Testing for negatively charged ions
Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first. Carbonate ions also produce a white precipitate with barium chloride solution. The acid reacts with ...