News tagged with ring structures


Chemists synthesize herbal alkaloid

Chemists synthesize herbal alkaloid

Chemistry / Materials Science

created Apr 15, 2009 | popularity 4.8 / 5 (5) | comments 0

The club moss Lycopodium serratum is a creeping, flowerless plant used in homeopathic medicine to treat a wide variety of ailments. It contains a potent brew of alkaloids that have attracted considerable scient ...





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Scientists discover 2 genes that drive aggressive brain cancers

Medicine & Health / Cancer

created Dec 23, 2009 | popularity 4 / 5 (2) | comments 0

A team of Columbia scientists have discovered two genes that, when simultaneously activated, are responsible for the most aggressive forms of human brain cancer.


Synergistic interaction enhances pathogenesis of Parkinson's disease

Electronics /

created Dec 23, 2009 | popularity not rated yet | comments 0

Scientists have identified a synergistic interaction that disrupts normal intracellular transport mechanisms and leads to the accumulation of neuron-damaging clumps of protein associated with Parkinson's disease (PD), a neurodegenerative ...


First adhere, then detach and glide forward

First adhere, then detach and glide forward

Medicine & Health / Research

created Dec 23, 2009 | popularity 5 / 5 (1) | comments 0

How do one-celled parasites move from the salivary gland of a mosquito through a person's skin into red blood cells? What molecular mechanisms form the basis for this very important movement of the protozoa? ...


Salmon

Hatchery-raised salmon too crowded

Biology / Ecology

created Dec 23, 2009 | popularity 5 / 5 (1) | comments 0

Every year, large amounts of hatchery-raised young salmonids are released into Swedish rivers and streams to compensate for losses in natural production. Butthese fish generally survive poorly in the wild. ...


Researcher finds success with new anti-cancer drug

Medicine & Health / Cancer

created Dec 22, 2009 | popularity 5 / 5 (4) | comments 0

A study conducted at Scott & White Healthcare in Temple, Texas, found that a new drug stopped the growth of breast tumors in mice. This drug is unique in that it works both by stopping the cancer cells from growing and metastasizing ...


Shallow Origins

Shallow Origins

Space & Earth / Earth Sciences

created Dec 22, 2009 | popularity 4.9 / 5 (13) | comments 2

In finding answers to the mystery of the origin of life, scientists may not have to dig too deep. New research is shedding light on shallower waters as a possible location for where life on Earth began.


Top-bottom: Soichi Noguchi, Timothy J. Creamer and Oleg Kotov wave before boarding a Soyuz TMA-17 spacecraft

Astronauts dock at International Space Station

Space & Earth / Space Exploration

created Dec 22, 2009 | popularity 5 / 5 (1) | comments 0

A Russian rocket carrying three astronauts from Japan, Russia and the United States docked at the International Space Station Wednesday, the Russian flight control centre said.


Tiny nano-electromagnets turn a cloak of invisibility into a possibility

Physics / General Physics

created Dec 22, 2009 | popularity 4.6 / 5 (15) | comments 9

A team of researchers at the FOM institute AMOLF (The Netherlands) has succeeded for the first time in powering an energy transfer between nano-electromagnets with the magnetic field of light.


Nanoscale changes in collagen are a tipoff to bone health

Nanoscale changes in collagen are a tipoff to bone health

Medicine & Health / Research

created Dec 22, 2009 | popularity 5 / 5 (1) | comments 0

Using a technique that provides detailed images of nanoscale structures, researchers at the University of Michigan and Detroit's Henry Ford Hospital have discovered changes in the collagen component of bone ...


Part 1: From Linacs to Lasers: Accelerators and Light Sources of Tomorrow

Accelerators and Light Sources of Tomorrow (Part 1: From Linacs to Lasers)

Physics / General Physics

created Dec 22, 2009 | popularity 4.7 / 5 (6) | comments 2

From their humble beginnings as offshoots of the ordinary electric light bulb, particle accelerators have evolved in surprising directions. Among the most productive and promising developments have been light ...



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