There's no better time than the present to challenge your brain and expand your vocabulary. But you don't have to add big words to your conversations completely randomly; you can choose some of these ...

This is the second of five long vowel programmes in our series of videos that explore the sounds of English. This is the second of eight other consonant programmes in our series of videos that explore ...

To speak German confidently, it’s helpful to know how to pronounce words correctly. German has lots of similar phonemes to English, which should help when pronouncing a lot of German words. A phoneme ...

Carbonic anhydrases (CAs) are widespread enzymes in bacteria, archaea and eukaryotes, and catalyze a crucially important physiological reaction: the hydration of carbon dioxide to bicarbonate and ...

This type of medium is both selective and differential. The MSA will select for organisms such as Staphylococcus species which can live in areas of high salt concentration (plate on the left in the ...

Background We present a case of severe neurological symptoms caused by hyperammonemia, secondary to a urinary tract infection with urea-splitting bacteria. Investigations Blood analysis, urinalysis, ...

The agricultural industry widely uses urea, a white crystalline solid containing 46 percent nitrogen, as an animal feed additive and fertilizer. Here, we’ll focus on its role as a nitrogen fertilizer.

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...