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Latest Dyes Stories

2009-06-29 09:44:27

A Vanderbilt chemist and a biomedical engineer have teamed up to develop a respiratory virus detector that is sensitive enough to detect an infection at an early stage, takes only a few minutes to return a result and is simple enough to be performed in a pediatrician's office.Writing in The Analyst "“ a journal published by the Royal Society of Chemistry "“ the developers report that their technique, which uses DNA hairpins attached to gold filaments, can detect the presence of...

2009-06-04 12:58:55

The laboratory « Structure - Activit© of Normal & Pathologic Biomolecules"“ SANPB », Inserm / UEVE U829 (Genopole Evry, France) in collaboration with the Material Centre of Mines-ParisTech (Evry, France), the NRG - UMR 5060 CNRS / UTBM (Technology University of Belfort-Montb©liard) and the Physic Institute of Stuttgart University (Germany) discovered a novel route to fabricate fluorescent nanoparticles from diamond microcrystals....

2009-04-15 08:18:31

The more dots there are, the more accurate a picture you get when you connect them. A new imaging technology could give scientists the ability to simultaneously measure as many as 100 or more distinct features in or on a single cell. In a disease such as cancer, that capability would provide a much better picture of what's going on in individual tumor cells.A Stanford University School of Medicine team led by Cathy Shachaf, PhD, an instructor in microbiology and immunology, has for the first...

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2009-02-26 08:00:00

A team of Vanderbilt scientists have invented the world's smallest version of the periscope and are using it to look at cells and other micro-organisms from several sides at once. "With an off-the-shelf laboratory microscope you only see cells from one side, the top," says team member Chris Janetopoulos, assistant professor of biological sciences. "Not only can we see the tops of cells, we can view their sides as well "“ something biologists almost never see." The researchers have...

2009-02-19 22:22:36

Oral human papillomavirus can be detected using a VELscope, a device used by dentists to harden cavity fillings, U.S. researchers said. Study author John C. Comisi said he discovered that the blue light emitted by the VELscope also detects cancerous oral tissue. The study explains that when emitting a specific wavelength of light into the mouth, oral fluorescence occurs, which in turn causes the tissue to emit its own light -- called natural fluorescence. The VELscope produces a blue light...

2009-02-02 10:15:06

This year's model isn't your father's nanocar. It runs cool.The drivers of Rice University's nanocars were surprised to find modified versions of their creation have the ability to roll at room temperature. While practical applications for the tiny machines may be years away, the breakthrough suggests they'll be easier to adapt to a wider range of uses than the originals, which had to be heated to 200 degrees Celsius before they could move across a surface.The nanocar was a sensation when...

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2008-11-19 14:55:41

A study published in the scientific journal PLoS ONE highlights how the exploration of the ocean depths can benefit humankind. This is the story of a voyage of discovery, starting with marine animals that glow, the identification of the molecules responsible and their application as marker in living cells. Many marine organisms such as sea anemones and corals produce fluorescent proteins, which come in a variety of dazzling hues. Fluorescent proteins have revolutionized biomedical research by...

2008-10-22 12:10:00

Algerian scientists say they've discovered orange peel can be used to remove acidic dyes from industrial effluent. The researchers said highly colored industrial waste water is a serious environmental problem since it blocks sunlight vital for photosynthesizing plant species in the water. "Synthetic dyes are extensively used by industries including dye houses, paper printers, textile dyers, color photography and as additives in petroleum products," said Benaissa Houcine of the Laboratory of...

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2008-09-18 08:00:57

Scientists have discovered that certain fish are capable of glowing red. Research published today in BMC Ecology includes striking images of fish fluorescing vivid red light. Due to absorption of 'red' wavelengths of sunlight by sea-water, objects which look red under normal conditions appear grey or black at depths below 10m. This has contributed to the belief among marine biologists that red colors are of no importance to fish. Nico Michiels, from the University of Tbingen, Germany, led a...

2008-09-17 15:15:00

By SHILLINGTON, David Popular television programmes often depict forensic testing at crime scenes where small traces of blood are detected using Luminol. It is used to detect blood (which may be old, dry or in small quantities) and relies on a process known as chemi- luminescence. The process mimics one used by glow worms and fireflies where chemical energy is converted into light without much heat. The investigators apply the luminol substance to the ground or surface being investigated...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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