Tag: "width" at biology news

Diatom genome reveals key role in biosphere's carbon cycle

...r microns in width--as many as 70 could fit in the width of a human hair--Thalassiosira pseudonana is among the smallest diatoms. Like its brethren, it is encased by a frustule, a rigid cell wall delicately marked with pores in patterns distinctive enough for scientists to tell the species apart. Another ...

NIH awards Emory and Georgia Tech $10 million for partnerships in cancer nanotechnology

...f a meter, or about 100,000 times smaller than the width of a human hair. Most animal cells are 10,000- 20,000 nanometers in diameter, so nanoscale devices are tiny enough to enter cells and analyze DNA and proteins, potentially identifying and treating cancerous cells at much earlier stages than currently...

Time-lapse movies show brain cells move like a two-stroke engine

...vel a little more than a micron, or about half the width of a hair over the course of an hour. The new study shows that a surprising mechanism underlies neuronal migration. The Rockefeller scientists suspected that the cytoskeleton, the scaffold of elements called microtubules that support a cell's three-d...

System lowers breast augmentation re-operation rate by 17 percent

...right implant and procedure for the patient: base width of the breast tissue, degree of stretch, nipple-to-fold distance, implant dimensions and how the implant will sit within the breast. "These algorithms have been shown to reduce unnecessary re-operations, such as exchanging implants for larger ones, b...

Scientists develop 'electronic eye' for the blind

...estrian crossing, and at the same time measure the width of the road to the nearest step and detect the col...iques the authors have produced, for measuring the width of the road and the colour of traffic lights, a single camera can now give the blind all the informa...

Less fat makes better process for designing new drugs

...ers across, compared to 100 micrometers (about the width of a human hair). Larger crystals are easier to manipulate in the laboratory, Caffrey said, and they can be viewed with less expensive equipment than is required to view smaller crystals. He and his colleagues will have to develop th...

Open microfluidic and nanofluidic systems

... to channels with a rectangular cross section. The width and depth of these channels can be varied between ...s, a water filament in a narrow channel that has a width of 100 nanometer can sustain an overpressure up to 15 atm. In contrast, if the channel had a width o...

Dental researchers answer key enamel question

...s in enamel are highly elongated, with a length to width ratio as high as 1000. The microribbons' chains of amelogenin nanospheres were also elongated. Oldak wondered if the microribbons might be the scaffold for biomineralization she had been looking for. It was a leap that her scientific training told he...

Probing the promise and perils of nanoparticles

...oparticles known as dendrimers, tiny spheres whose width is ten thousands times smaller than the thickness of a human hair. Dendrimers have shown promise for precisely delivering drugs to their targets inside the body, but high concentrations of these nanoparticles can be toxic. In earlier work, U-M resear...

Brain research to help in fight against cardiovascular disease

...w. These cerebral arteries are no bigger than the width of human hair and are the most important in regulating blood flow. Dr Quayle explains: "Blood is supplied to the brain through blood vessels called cerebral arteries. However, despite their importance, the behaviour of these vessels is not well unde...

Molecular motors cooperate in moving cellular cargo, study shows

...of a meter, or about 10,000 times smaller than the width of a human hair). Recent improvements to FIONA now allow scientists to detect motion with millisecond time resolution. Selvin's team used FIONA to track fluorescently labeled peroxisomes (organelles that break down toxic substances) inside specially ...

ASU researcher creates novel 'bioelectronic signatures' to detect DNA mutations

... at the scale of a thousand times smaller than the width of a human hair. He authored 660 papers and has 12 patents to his credit, including involvement in the development of the first noninvasive biosensor for diabetes, the FDA approved Gluco Watch, which monitors glucose levels through human sweat. "The...

New law for resolution allows unprecedented sharpness in fluorescence microscopy

...ad been previously dyed with a fluorescent dye) of width as small as 40-80 nm, a size previously reserved for electron microscopy. This may be of importance for the lithographic manufacturing of microchips. The reduction in size of the diameter of the effective fluorescence focus also has fundamental impli...

ASU researcher fashions DNA to further advances in nanotechnology

... three side-by-side helices just six nanometers in width and 17 nanometers in length. One nanometer is one-billionth of a meter. By programming into the assembly a short sequence of DNA that recognizes a particular protein, called an aptamer, Yan created a DNA molecule that could now function as a biomolec...

Microbes found to produce miniature electrical wires

...owires are incredibly fine, only 3-5 nanometers in width (20,000 times finer than a human hair), but quite durable and more than a thousand times long as they are wide. "Such long, thin conductive structures are unprecedented in biology," said Lovley. "This completely changes our concept of how microorgani...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...n nanotubes, synthetic rods that are only half the width of a DNA molecule. Thousands of nanotubes could easily fit inside a typical cell. "An interesting property of carbon nanotubes is that they absorb near-infrared light waves, which are slightly longer than visible rays of light and pass harmlessly t...

Nano coalition unveils environmental, health and safety database

...ter or approximately 60,000 times smaller than the width of a human hair.) The database is the result of the collected efforts of Rice researchers, the chemical industry and the U.S. Department of Energy. This database will be updated and enhanced over the next year. Many nanoparticles exhibit unique chem...

Gap-climbing fruit flies reveal components of goal-driven behaviors

...ound that the flies first visually measure the gap width and then only cross the gap if it is a traversable width. If the chasm is short, flies engage in an extraordinary crossing behavior that the researchers showed involve three motor programs. High-speed video analyses revealed that flies can flexibly c...

New chemistry method uses 'test tubes' far smaller than the width of a hair

... so minuscule that it covers just 1 percent of the width of a human hair, said Daniel Chiu, a UW associate chemistry professor who is developing the unique method. "Anything you can do in the test tube we hope to be able to do in the droplet. We just don't need a lot of cells. We don't even need one cell,...

Gold bowties may shed light on molecules and other nano-sized objects

... nanoantenna," a device 400 times smaller than the width of a human hair that can compress ordinary light waves into an intense optical spot only 20 nanometers wide. These miniature spotlights may one day allow researchers to produce the first detailed images of proteins, DNA molecules and synthetic nano-o...

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(Date:11/15/2014)... YORK , Nov. 13, 2014  While we may ... technology Doctor McCoy used in "Star Trek" to gain instant ... tools designed to work with smartphones and tablets for monitoring ... of the healthcare world. This may seem a tad Orwellian ... ready to adopt some of these technological opportunities into their ...
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