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atoms in Medical News

Remote-control closed system invented for inserting radio-active atoms inside fullerenes

Blacksburg, Va. Virginia Tech chemistry Professor Harry C. Dorn, Emory and Henry College chemistry Professor James Duchamp, and Panos Fatouros, professor and chair of the Division of Radiation Physics and Biology at the Virginia Commonwealth University School of Medicine have co-invented a hands-...

Physics research with atomic force microscope could lead to better health care

...ine. He and his former colleagues looked at the unexpected complexity in the dynamics of stretching and breaking of a single chemical bond between two atoms embedded in a protein. A cleavage of that particular bond has been precisely signaled by unfolding and elongation of a part of a protein. "There is...

Scientists advance safety of nanotechnology

...of a metre), is an important emerging industry with a projected annual market of around one trillion US dollars by 2015. It involves the control of atoms and molecules to create new materials with a variety of useful functions, including many that could be exceptionally beneficial in medicine. However...

Winalite International Healthy Love Moon Sanitary Pads Takes World by Storm

...emitting negative ions (anions) during use. Canyon Lake, California (PRWEB) April 28, 2009 -- Ions are electrically charged atoms that can carry a positive or negative charge (anions). Anions are required to sustain life.They have strong absorption capability to absorb micro part...

Stanford researchers harness nanoparticles to track cancer-cell changes

...ectrons are just barely modified by weak interactions among the constituent atoms in the molecule being inspected. Raman signals are emitted all the time ...rganic nanoparticles: These are essentially sandwiches of dye molecules and atoms of metals such as silver, gold or copper whose reflective properties amplif...

What's in your water?: Disinfectants create toxic by-products

...bromine and iodine in that water, when you disinfect these waters, you can generate the chemical conditions necessary to produce DBPs that have iodine atoms attached. And these are much more toxic and genotoxic than the regulated DBPs that currently EPA uses," he said. Plewa said that the second discove...
atoms in Medical Technology

Astrocytes Help Separate Man From Mouse

...domain might include up to 2 million synapses. These domains are highly organized groupings of cells that appear to be precisely situated, almost like atoms in a crystal. This organization is likely important for information processing, said Nedergaard, who notes that brain injury is associated with a loss...

Sequoia Pharmaceuticals Presents In Vitro and First-in-Human Data Supporting Further Development of SPI-256, a Novel Investigational Protease Inhibitor

...eases bound to selected inhibitors. By analyzing these structures, the Sequoia scientists were able to identify a subset of main-chain and active-site atoms of HIV protease representing a conserved atomic substructure that cannot be altered by mutations. This conserved substructure then served as the targe...
atoms in Medical Dictionary

Mole

...es since 1927. mole or mol n. The amount of a substance that contains as many atoms, molecules, ions, or other elementary units as the number of atoms in 0.012 mole n. Any of various small insectivorous mammals of the family Talpidae, usually living underground and having thickset bodies with l...

Metabolism

... weight. ... Read on to learn how to increase metabolism with protein. ... Metabolism : Carbohydrates made up of carbon, hydrogen, and oxygen atoms are ... Cholesterol Metabolism . Resources. Metabolism refers to the physical and ... Cincinnati personal trainer discusses metabolism and sl...

Ketones

...nded to two other carbon atoms, i.e., R3CCO-CR3 where R can be a variety of atoms and groups of atoms. With carbonyl carbon bonded to... In organic che...nded to two other carbon atoms, i.e., R3CCO-CR3 where R can be a variety of atoms and groups of atoms. With carbonyl carbon bonded to... The by-product o...

Fat

...nimal fats are lard (pig fat ), fish oil, and butter or ghee. ... A fat 's constituent fatty acids may also differ in the number of hydrogen atoms ... File Allocation Table or FAT is a computer file system architecture now widely used on most computer systems and most memory cards, such as ...

Carbon dioxide

...e is a chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. It is...ule consists of one atom of carbon joined to two atoms of oxygen... Evidence is mounting that carbon...CO2, is a chemical compound composed of two Oxygen atoms ... File: Carbon dioxide pressure-temperature p...

Ammonia

...ch is then eliminated in urine. ... eTools Home : Ammonia Refrigeration ... Ammonia is a chemical consisting of one atom of nitrogen and three atoms of hydrogen. ... Managing the risks when working with anhydrous ammonia . ... Protective Equipment for Anhydrous Ammonia . Nurse Tank Safety Che...
atoms in Biological News

Dancing atoms now understood

In developing a model to explain the motion of atoms in a magnetic field, scientists have overcome a decades-old obstacle to understanding a key component of magnetic resonance. The new understanding may eventually lead to better control of magnetic resonance imaging (MRI) and higher resoluti...

Super atoms turn the periodic table upside down

Researchers at Delft University of Technology (TU Delft) in The Netherlands have developed a technique for generating atom clusters made from silver and other metals. Surprisingly enough, these so-called super atoms (clusters of 13 silver atoms, for example) behave in the same way as individual at...

'Heftier' atoms reduce friction at the nanoscale, study led by Penn researcher reveals

PHILADELPHIA - A research team led by a University of Pennsylvania mechanical engineer has discovered that friction between two sliding bodies can be reduced at the molecular, or nanoscale, level by changing the mass of the atoms at the surface. Heavier atoms vibrate at a lower frequency, reducin...

Jet-propelled imaging for an ultrafast light source

...les. A knowledge of the arrangement of a protein's atoms is therefore a great help to drug designers, who l... rotates in the x-ray beam, x-rays scatter off the atoms and reveal once these complex diffraction pattern... so brief that it comes and goes before any of the atoms can move, freezing their orientation like a strobe...

Nanophysics: Serving up Buckyballs on a silver platter

...hnique called low-energy electron diffraction. They find that the silver atoms rearrange in such a way namely, by forming a 'hole' beneath each C60 molec...ience because the molecules and the re-arrangement of the underlying silver atoms are quite complex. The measurements thus open the door to studies of a larg...

New supercomputer to reel in answers to some of Earth's problems

...understand the tiniest particles in the atmosphere or chemists watching how atoms tug at each other in a molecule need a different kind of supercomputer than...ntists develop a new catalytic material based on small clusters of platinum atoms that does this at least 40 times more efficiently than older materials. ...
atoms in Biological Technology

Cold atoms could replace hot gallium in focused ion beams

Scientists at the National Institute of Standards and Technology (NIST) have developed a radical new method of focusing a stream of ions into a point as small as one nanometer (one billionth of a meter).* Because of the versatility of their approachit can be used with a wide range of ions tailored...

Sheet of carbon atoms acts like a billiard table, physicists find

RIVERSIDE, Calif. A game of billiards may never get smaller than this. Physicists at UC Riverside have demonstrated that graphene a one-atom thick sheet of carbon atoms arranged in hexagonal rings can act as an atomic-scale billiard table, with electric charges acting as billiard balls. ...

Sheet of carbon atoms acts like a billiard table, physicists find

RIVERSIDE, Calif. A game of billiards may never get smaller than this. Physicists at UC Riverside have demonstrated that graphene a one-atom thick sheet of carbon atoms arranged in hexagonal rings can act as an atomic-scale billiard table, with electric charges acting as billiard balls. ...

Memory in artificial atoms

Computer memory Your computer has two equally important elements: computing power and memory. Traditionally, scientists have developed these two elements in parallel. Computermemory is constructed from magnetic components, while the media of computing is electrical signals. The discovery of the...

Bon MOT: Innovative atom trap catches highly magnetic atoms

A research team from the National Institute of Standards and Technology (NIST) and the University of Maryland has succeeded in cooling atoms of a rare-earth element, erbium, to within two millionths of a degree of absolute zero using a novel trapping and laser cooling technique. Their recent repor...

Stopping atoms

With atoms and molecules in a gas moving at thousands of kilometres per hour, physicists have long sought a way to slow them down to a few kilometres per hour to trap them. A paper, published today in the Institute of Physics New Journal of Physics, demonstrates how a group of physicists from T...
atoms in Biological Products

9(S)-HODE-d4, Deuterium Conjugated/Tagged from Cayman Chemical

Description:... 9(S)-HODE-d4 contains 4 deuterium atoms at the 9, 10, 12, and 13 positions. It is intended for use as an internal standard for the quantification of 9(S)-HODE by GC- or LC-mass spectrometry....
Company:Cayman Chemical

9(S)-HODE-d4, Deuterium Conjugated/Tagged from Cayman Chemical

Description:... 9(S)-HODE-d4 contains 4 deuterium atoms at the 9, 10, 12, and 13 positions. It is intended for use as an internal standard for the quantification of 9(S)-HODE by GC- or LC-mass spectrometry....
Company:Cayman Chemical

6-keto Prostaglandin F1alpha-d4 from Cayman Chemical

Description:... PGF1α-d4 contains 4 deuterium atoms at the 3, 3', 4, and 4' positions. It is intended for use as an internal standard for the quantification of PGF1α by GC- or LC-mass spectrometr...
Company:Cayman Chemical

Prostaglandin D2-d4 from Cayman Chemical

Description:... PGD2-d4 contains 4 deuterium atoms at the 3, 3', 4, and 4' positions. It is intended for use as an internal standard for the quantification of PGD2 by GC- or LC-mass spectrometry....
Company:Cayman Chemical

Prostaglandin E2-d4 from Cayman Chemical

Description:... PGE2-d4 contains 4 deuterium atoms at the 3, 3', 4, and 4' positions. It is intended for use as an internal standard for the quantification of Prostaglandin E2 (PGE2) by GC- or LC-mass ...
Company:Cayman Chemical

Prostaglandin E2-d4 from Cayman Chemical

Description:... PGE2-d4 contains 4 deuterium atoms at the 3, 3', 4, and 4' positions. It is intended for use as an internal standard for the quantification of Prostaglandin E2 (PGE2) by GC- or LC-mass ...
Company:Cayman Chemical
atoms in Biological Definition

Absorption spectrum

... us consider white light, which consists of electromagnetic radiation at all frequencies, passing through a sample of cold gas. For any collection of atoms or molecules , there are certain specific amounts of energy required to change state; for individual atoms, these correspond to an electron movi...

Coenzyme A

... the addition of the acetyl group to choline a reaction that is catalysed by choline acetyltransferase . Its main task is conveying the carbon atoms within the acetyl group to the citric acid cycle to be oxidized for energy production. The conversion of pyruvate into Acetyl-CoA is referr...

Amine

...resembling ammonia , where one or more hydrogen atoms are replaced by alkyl groups or other groups where...he same). However, the number subscripts on the H atoms show how many H atoms there are in that group. Primary Amine...

Amino acid

... 165.19 5.49 2.20 9.31 G Gly Glycine hydrophilic 75.07 6.06 2.35 9.78 Because of the two hydrogen atoms at the α carbon, glycine is not optically active . H His Histidine basic 155.16 7.60 1.80 9.33 6.04 In eve...

Beta sheet

...effect of multiple such hydrogen bonds arranged in this way contributes to the sheet's stability and structural rigidity and integrity. The α-C atoms of adjacent strands stand 350 picometres (0.35 nm) apart. The side chains from the amino acid residues found in a β sheet structure may also ...

Biological membrane

...t feature of a biomembrane is that it is a selectively permeable structure. This means that the size, charge and other chemical properties of the atoms and molecules attempting to cross it will determine whether they succeed to do so. Selective permeability is essential for effective separation of a ...
atoms in Biological Dictionary

X-ray diffraction

... composition, and physical properties of materials and thin films. These... X - ray crystallography is a method of determining the arrangement of atoms within a crystal, in which a beam of X -rays strikes a crystal and diffracts into many specific directions. From the angles and intensities of these....

Shell

...ny software... Shell (mathematics), a ring-like algebraic structure. Electron shell , describing the structure of electron configuration in atoms ... shell n. The usually hard outer covering that encases certain organisms, such as mollusks, insects, and turtles; the carapace Unix shell ...

Reduction

...o another problem ... Strength reduction – a compiler optimization where a function of some ... Redox describes all chemical reactions in which atoms have their oxidation number changed. This can be either a simple redox process such as the oxidation of carbon to yield carbon dioxide or the red...

Redox reaction

.... If the redox reaction is one in basic solution, then add OH- to both sides of ... Redox reactions include all chemical processes in which atoms have their oxidation number (oxidation state) changed. ... illustration of a redox reaction ... Redox reaction synonyms, Redox reactio...

Pyrimidine

... Pyrimidine is a heterocyclic aromatic organic compound similar to benzene and pyridine, containing two nitrogen atoms at positions 1 and 3 of the six-member ring. It is isomeric with two other forms of diazine. ... in the pyrimidine biosynthesis. ... Pyrimid...

Protons

...leons, which may be bound by the nuclear force ... atoms are composed of two or more protons and variou... Atomic nucleus The central region of an atom. atoms are composed of negatively charged electrons, posi...... Protons make up part of the nucleus of all atoms except ... Protons .com ... 2 Protons and ne...
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