13-10-29 Taxonomic(分类的) descriptions, introduced by Linnaeus in 1735, are designed to allow scientists to tell one species from another. Now there is a new futuristic(未来派飞) method for describing new species that goes far beyond the tradition. The...
13-09-12 A UNSW-led team of astronomers has begun to map the location of the most massive and mysterious objects in our galaxy -- the giant gas clouds where new stars are born. Using a telescope at Coonabarabran that narrowly escaped devastation(毁坏) in a...
13-08-19 Scientists at The Scripps Research Institute (TSRI) have discovered the molecular mechanism by which the deadly Ebola virus assembles, providing potential new drug targets. Surprisingly, the study showed that the same molecule that assembles and rel...
13-08-05 Chemists have unexpectedly made two differently colored crystals -- one orange, the other blue -- from one chemical in the same flask(烧瓶) while studying a special kind of molecular connection called an agostic bond. The discovery, reported in An...
13-06-16 They lie dormant(冬眠,休止) for years, but at the first sign of favorable conditions they awaken. This sounds like the tagline(标语) for a science fiction movie, but it describes the amazing life-cycles of microbial organisms that form the biol...
13-04-15 Newcastle University scientists have revealed the mechanism that causes a slime(黏液,烂泥) to form, making bacteria hard to shift and resistant to antibiotics. When under threat, some bacteria can shield themselves in a slimy(黏滑的) protective...
13-02-21 The base pairs that hold together two pieces of RNA, the older cousin of DNA, are some of the most important molecular interactions in living cells. Many scientists believe that these base pairs were part of life from the very beginning and that RNA...
12-12-24 In a forced game of molecular tug-of war, some strings of atoms can act like a lever(杠杆) , accelerating reactions 1000 times faster than other molecules. The discovery suggests that scientists could use these molecular levers to drive chemical a...
12-06-11 Enabling bioengineers to design new molecular machines for nanotechnology applications is one of the possible outcomes of a study by University of Montreal researchers that was published in Nature Structural and Molecular Biology June 10. The scient...
11-12-23 Yale researchers have uncovered the molecular tricks used by bacteria to fight the effects of fluoride(氟化物) , which is commonly used in toothpaste and mouthwash to combat tooth decay. In the Dec. 22 online issue of the journal Science Express,...