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Tag: "sensors" at biology news

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

...ble to insert relatively large structures, such as sensors and hollow filaments called carbon nanotubes, into the interiors of cells. The sensors could make it possible to monitor activities inside a single cell for the early detection of cancer ...

Weizmann Institute scientists develop a general 'control switch' for protein activity

...ns are used in industrial processes, as biological sensors and in other applications. The possibility of controlling these applications – strengthening or slowing the rate of protein activity in an immediate and reversible manner – can be of great value....

NASA-funded robotic sub finds bottom of world's deepest sinkhole

...ehicle as it explored the cenote. It also used the sensors to create maps of the sinkhole’s interior via a technique called simultaneous localization and mapping, or SLAM. Prior to the DEPTHX field experiment, SLAM had been used for navigating in buildings and mines, but had never operated in an underwater e...

The longest carbon nanotubes you've ever seen

...rials--could ultimately find use in smart fabrics, sensors and a host of other applications. To grow the aligned bundles of tiny tubes, the researchers combined advantages of chemical vapor deposition (CVD), a technique for creating thin coatings that is especially common in the semiconductor industry, wi...

Magnetic computer sensors may help study biomolecules

...hes called "spin valves"—commonly used as magnetic sensors in the read heads of high-density disk drives—also show promise as tools for controlled trapping of single biomolecules. The arrays might be used in chip-scale, low-power microfluidic devices for stretching and uncoiling, or capturing and sorting, la...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...on-invasive technique in which an array of surface sensors follow the passing of natural shear waves traveling along the muscle fibers. By the way, the Scripps scientists were originally interested in underwater noise effects and only later adapted their work to noise in muscle. (2pUW9; contact Karim Sabra...

What's in the water? Estrogenic activity documented in fish caught in Pittsburgh's rivers

...s of this project are to use fish as environmental sensors of chemicals in the water and the aquatic food chain, and to determine the origins of these chemical contaminants," said Dr. Volz. The study examined white bass and channel catfish caught in the Allegheny, Monongahela and Ohio Rivers. These fish are ...

Applied scientists create wrinkled 'skin' on polymers

...y). The technique has potential use for biological sensors and microfluidic devices and may offer new ways to build custom-made cell templates for tissue engineering. The work is a collaboration among researchers at Harvard University and Seoul National University. The Harvard group consisted of John W. Hut...

Microfluidic chip helps solve cellular mating puzzle

..., through a chain of chemical reactions. First, sensors on the surface of a yeast cell pick up signals that a mating partner is nearby. Then the message is passed down toward the cell’s control center, the nucleus. The messengers that carry it to the nucleus are MAPKs, which direct the cell’s response by ...

Biologically inspired sensors can augment sonar, vision system in submarines

...ricated flow sensors, with the sizes of individual sensors and spacings between them matching those of their ...ray the researchers have built consists of 16 flow sensors with 1 millimeter spacing. Each sensor is 400 microns wide and 600 microns tall. In tests, the res...

Bacterial response to oxidation studied as toxin barometer

...u haven’t identified.? “We don’t have to have 20 sensors for 20 toxins. We can sense the presence of any oxidative toxin,?Love said. Ikuma, who was an undergraduate biology student at Virginia Tech when she began working with Love, has now come full circle from a biology student working on a civil engin...

Scientists design simple dipstick test for cocaine, other drugs

...ith lead (Pb) sensors, we constructed colorimetric sensors that are based on the lateral flow separation of a...te for Advanced Science and Technology. "The new sensors offer a quick and convenient test that can be utilized by first responders or emergency room staff t...

New system could drastically reduce herbicide use

... Although the robot is equipped with ultrasonic sensors that go all the way around the machine, "we're goi... future, Gingrich and Jeon hope to place different sensors and cameras on the robotic arm that would be used to judge soil properties or plant conditions. "...

Motorola researchers develop selective sensors based on carbon nanotubes

...plied research arm of Motorola Inc., has developed sensors based on carbon nanotubes, microscopically small s...he researchers now will investigate the use of the sensors on biological molecules, like RNA sequence detection, Tao and Forzani said. ...

Climate experts search for answers in the oceans

...erent satellites. GlobCOLOUR uses data from colour sensors such as MERIS aboard ESA’s Envisat as well as MODIS carried aboard NASA’s Aqua and SeaWiFS aboard GeoEye's Orbview-2 satellite. Medspiration utilises data from ESA’s Envisat and Meteosat-8, the United States?National Oceanic and Atmospheric Administr...

Nano-devices hold promise for early-stage cancer detection

...ening of pancreatic and gastrointestinal tumors; sensors that can detect food- and water-borne pathogens. "The ultimate goal is to develop reliable and inexpensive detection and imaging products that can be used in a doctor’s office or possibly even at home as part of a regular exam," said Steve Hra...

Three-dimensional, miniature endoscope opens new diagnostic possibilities

...eas of interest. Larger endoscopes that use image sensors to produce high-quality, two-dimensional images can be a centimeter or more in diameter. Existing miniature endoscopes using smaller fiber bundles may be more flexible but have difficulty producing high-quality images. The new device developed at...

Scientists find a key to immune system's ability to remember

...ls -- to cement the memory induced by cell surface sensors known as antigen receptors that act to identify the signatures of pathogens like measles virus and HIV, agents that hide inside cells. Lck is important in helping "naive" T cells -- those cells that have never been exposed to a particular pathogen...

New finding points way to foiling anthrax's tricks

...etrobactin synthesis or iron-uptake, or to anthrax sensors that detect petrobactin, which is not known to occur in any other pathogenic bacteria. ...

UCSD study reveals how plants respond to elevated carbon dioxide

...re, high carbon dioxide seems to prime the calcium sensors in the leaf. Jared Young, an assistant professor o...ngs suggest that carbon dioxide primes the calcium sensors to respond to the calcium spikes in the cell. Since changes in calcium concentration are used in oth...

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