Imagine a space tool so revolutionary it can determine the impact of climate change, monitor the melting of glaciers, discover invisible waves, predict the strength of hurricanes, conserve fish stocks and measure river and lake levels worldwide, among other scientific applications. This instrument is not the subject of a science-fiction novel. In fact, four of them are already operating 800 kilometres above Earth.
Fifteen years ago this ground-breaking instrument, called a radar altimeter,
Findings could increase popular compounds therapeutic use and effectiveness
According to the study, these activators bind to specific sites on the neurotoxin protein, increasing protease activity and enhancing the toxins effect. In some cases, the study noted, the activation power of the new molecules was as much as fourteen-fold, the greatest increase in activation ever reported for a protease; before this study, a two-fold activation of a protease was referred to
Behavior of Scandinavian Ice Sheet at the end of the last Ice Age may preview loss of Greenland Ice Sheet due to global warming
The retreat of a massive ice sheet that once covered much of northern Europe has been described for the first time, and researchers believe it may provide a sneak preview of how present-day ice sheets in Greenland and Antarctica will act in the face of global warming.
The study, which appears in the current issue of the journal Science, was led
Nanoparticles shape could improve chemical sensing, biological imaging
Who better to invent “nanorice” than researchers at Rice University? But marketing and whimsy werent what motivated the team of engineers, physicists and chemists from Rices Laboratory for Nanophotonics (LANP) to make rice-shaped particles of gold and iron oxide.
“On the nanoscale, the shape of a particle plays a critical role in how it interacts with light,” said LANP Director Naomi H
Embryonic development is already disturbed at concentrations 10 times lower than the norm for human consumption.
Dioxin-like contaminants such as PCB’s are probably playing a key role in the extinction of the eel. Embronyic development in this species is halted at dioxin concentrations 10 times below the levels for human consumption. This discovery was made by a team of biologists, led by Guido van den Thillart, who are conducting research in Leiden into the sexual maturity and
The behavior of a massive ice sheet that existed in northern Europe at the end of the last Ice Age has been outlined for the first time, and researchers believe it may provide a sneak preview of how major ice sheets in Greenland and Antarctica will act in the face of global warming.
The study, which will be published Friday in the journal Science by researchers from Oregon State University, shows that ice sheets can react quite differently depending on the climatic conditions