Tag: "magnetic" at biology news

Major new initiative to resolve structure of protein families

...arily use x-ray crystallography, backed by nuclear magnetic resonance and computation. In x-ray crystallography, a beam of x-rays is sent through a protein's crystal. The crystal's atoms cause the incoming photons to be scattered, creating a diffraction pattern that computers can translate into a 3-D image ...

Weizmann Institute scientists develop a novel system for analyzing genetic data that mimics the human capacity for unsupervised learning

...sical phenomenon. When a granular magnet such as a magnetic tape is warm, its grains are highly disorganized. But upon cooling down, the magnets grains progressively organize themselves into well-ordered clusters. Using the statistical mechanics of granular magnets, Domany created an algorithm that can look f...

Brain size in premature infants significantly smaller than full-term babies

...researchers has found. The researchers conducted magnetic resonance imaging (MRI) scans on 25 eight-year-olds born prematurely and compared them to brain scans of 39 children of comparable age, sex and maternal education. The study published in the October 18 issue of the Journal of the American Medical A...

New patent will help improve cancer, transplant research

...the market that tag cells with magnetic markers and sort them using magnetic fields. Researchers often use the technique to sort bone ...

Analysis of Martian meteorite using unique magnetic microscope

...Kirschvink heard about the capabilities of the new magnetic microscope designed and built by scientists at Van...h scientists realized that they could map the weak magnetic fields frozen in the meteoritic material with the Vanderbilt microscope and perform a simple experim...

Low frequency EMF damages mice ovarian follicles

... refrigerators, washing machines and kettles, as a magnetic field is generated every time an electrical device functions and an electrical field is also present when an appliance is on standby. Dr Cecconi said that little had been done to study the potential role for ELF-EMF on the development of mammali...

Contract bridge enhances the immune system, according to a preliminary study by researchers at UC Berkeley

...study, Diamond suggests using a functional nuclear magnetic resonance machine to see if the dorsolateral cortex actually does show greater activity during bridge playing than during rest. Because the brain's cortex is under voluntary control, she hopes her findings lead to ways to educate the brain to improv...

Men do hear -- but differently than women, brain images show

...he study, 20 men and 20 women underwent functional magnetic resonance imaging (fMRI) while listening to a passage from "The Partner," a John Grisham novel. A majority of the men showed exclusive activity on the left side of the brain, in the temporal lobe, which is classically associated with listening and sp...

2000 FALL MEETING: updated press conferences, press registration, and other information

...oth northern and southern hemispheres, even during magnetic storms when the effects of these currents extend t...y, December 16 2:00 PM Paleointensity of Earth's magnetic field During the past 10 million years, Earth's magnetic field has reversed 40 times. But perhaps e...

Scientists track phosphate to better understand global warming

... traditional analytic techniques, she uses nuclear magnetic resonance (NMR) spectroscopy to identify the kinds and amounts of phosphorus compounds that are distributed throughout forests. She also is collaborating with Paytan to adapt techniques for soils to ocean sediment trap samples to track which compound...

DNA arrays decipher genome's master switches

...rotein complexes. Specific antibodies coupled with magnetic beads are then used to fish out DNA fragments cross-linked to proteins of interest. This provides researchers a pure population of DNA-protein complexes, and unhooking the cross-linked DNA from the protein leaves them with DNA fragments that bind to...

Science's Top 10: genome sequencing named top scientific advance of 2000

...ted by the Galileo spacecraft on Europa's internal magnetic field and its cracked and stretched crust strengthened the case for a salty, global ocean lurking beneath the moon's icy shell. Since many researchers believe that water is essential for the existence of life, these discoveries have piqued interest i...

Recognizing current limitations, scientists begin quest for a new approach to imaging brain cells activity

...her animals." Other techniques, such as functional magnetic resonance imaging to view cross-sections of the brain, electroencephalography to graph brain waves across millions of cells, and optical recording where special dyes change their fluorescence as a function of the activity of cells, have not allowed r...

Atomic structure identified for gene-regulating molecule: Broad implications for cancers, autoimmunity, developmental disorders

...and her coworkers at Mount Sinai then used nuclear magnetic resonance, or NMR, to analyze the structure of the molecule. The use of NMR allowed the structure of the PHD molecular subunit to be determined without disturbing its natural shape and orientation....

Biochemist finds flexibility in key HIV protein

...ds of therapy might work." Tsang uses nuclear magnetic resonance (NMR) and other spectroscopic techniques to study the structure and binding characteristics of the V3 loop peptide. What she and her collaborators discovered was that no particular structure is adopted by this peptide. "The V3 loop reg...

Scientists detail parts of biological motor' key to cell life

...technologies such as mass spectrometry and nuclear magnetic resonance (NMR) have only recently been used by scientists to examine the protein's structure at the atomic level. Though the research was conducted on proteins derived from the fruit fly, the findings have implications for humans as well, Barbar...

Anthropologists find evidence of early humans in southern China cave

...rnt bone. LSUProfessor Brooks Ellwood is analyzing magnetic differences in sediment samples Schepartzand Stoutamire collected. He is looking for evidence of climate change over time....

Altadena chemist wins national award for studying life molecules

.... The research tool Roberts uses is called nuclear magnetic resonance, for whose development colleagues call him a pioneer in the field. NMR is based on the principle that nuclei - those of carbon, nitrogen and so on - will vibrate at some unique frequency when placed in an energy field. Researchers use NMR t...

Hopkins' Young Investigators' Day winners shine in the spotlight

.... Clifford R. Weiss has shown the potential for magnetic resonance imaging in pinpointing the sort of arterial inflammation associated with atherosclerosis. His work could form a basis for tracking vessel disease therapies or for diagnosing arterial disease. Jun Xia has worked on ways the body control...

Synthetic clay could assist radioactive waste cleanup

... Komarneni has used x-ray diffraction and nuclear magnetic resonance spectroscopy to evaluate the chemical properties of this new class of materials. One of his goals is to determine whether they have a larger capacity for metal uptake than currently available materials. In this recent experiment, he succe...

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