atom

Chemists create 'Superbowl' molecule; May lead to better health

...ngle buckyball is designed to hold either a single atom or a hydrogen molecule, a superbowl molecule can hold large molecules of up to a hundred atoms, particularly those of medicinal value, Sherburn says. "I'm sure that we will be able to encapsulate compounds such as [the anticancer drug] taxol in the ...

UIC developing drug for SARS

...o reconstruct the enzyme's molecular configuration atom by atom. The detailed structures will reveal the precise locations and chemical properties of pockets where the enzymes bind the SARS virus's long protein chain. This information will help Arun Ghosh, professor of chemistry at UIC, build protease i...

Researchers Create DNA-Based Sensors for Nano-Tongues and Nano-Noses

...hen rolled. It is a unique material in which every atom is on both the surface and the interior. Although nanotubes have many applications, they are extremely sensitive to electrostatic variations in their environment, whether the nanotube is in a liquid or in air. "When the DNA portion of the nanosensor...

Green diesel: New process makes liquid transportation fuel from plants

...olecule of hydrogen is used to convert each carbon atom in the carbohydrate reactant to an alkane. It's a very high yield. We don't lose a lot of carbon. The carbon acts as an effective energy carrier for transportation vehicles. It's not unlike the way our own bodies use carbohydrates to store energy." ...

Modifications render carbon nanotubes nontoxic

...ollow molecules of pure carbon with walls just one atom thick. They are related to buckyballs, tiny spheres of pure carbon that are about the same diameter. In previous studies with buckyballs, CBEN found that even minor surface modifications could dramatically reduce cytotoxicity. The nanotube study fou...

More>>

atom at Biology Products

Antisense oligonucleotides from Thermo Scientific

...re internucleotide modifications, where one oxygen atom in the phosphate backbone is replaced by a sulphur atom. This modification stabilises the oligonucleotide against nuclease degradation. PTOs are available as Full-PTOs All internucleotide linkages are phosphothioates Oligonucleotides with thio-ca...

Amino acid mixture excluding l-[U-14C]methionine from GE Healthcare, formerly Amersham Biosciences

...taining 2% ethanol, sterilized. > 1.85 GBq/mg atom carbon, > 50 mCi/mg atom carbon. Mixture of Ala, Arg, Asp, Glu, Gly, His, Ile, Leu, Lys, Phe, Pro, Ser, Thr, Tyr and Val.1.8...

atom at Biology Technology

Simultaneously characterizing and quantifying chloramphenicol and its metabolite using LC/MS/MS

...ual abundance, indicating the loss of one chlorine atom (either 35Cl or 37Cl) from the 35Cl 37Cl parent ion. The single MS spectrum (Figure 2.) of CAP metabolite and its product ion spectrum (Figure 3.) stated that the metabolite is glucuronidation of CAP. Figure 4. Single MS spectrum of peak 2 at t = 4.3...

Imago earns more acclaim for microscope

...as won acclaim for the updated capabilities of its atom probe microscope. A panel of industry experts appointed by Research and Development Magazine recently recognized the microscope with an "R&D100" award for 2006. Dr. Tim Stultz, president and CEO of Imago, said the microscope, LEAP 3000X , "fill...

Northwestern adds to its Imago microscope

...ientific Instruments , a Madison-based provider of atom probe tomographic microscopes and nanotechnology s...rthwestern University . The LEAP (local electrode atom probe) system is used by the Northwestern University Center for Atom-Probe Tomography , which focus...

Investors commit $3.4 million to Imago

...ree venture capital sources. Imago, a provider of atom probe tomography instruments for use in nanotechno...as the "dominant company in the global market" for atom probe microscopes. "We now have the largest product line, largest installed base, highest revenues, ...

Imago acquires synergistic British firm

... Imago announced Tuesday that it has acquired the atom probe company Oxford NanoScience Ltd. from the UK-...ut the transaction makes Imago the world's largest atom probe supplier, according to president and CEO Tim Stultz. The companies have a great deal in comm...

More>>

atom at Biology Definition

RNA

...tose ring in the 2' position (DNA has a hydrogen atom rather than a hydroxyl group). This hydroxyl gives the molecule far greater catalytic versatility and allows it to perform reactions that DNA is incapable of performing; but at the same time, it makes RNA sensitive to alkaline hydrolysis , to whic...

Reduction

...xidation, i.e. the formal oxidation state of an atom (independent or within a molecule ) is reduced by the addition of electrons . A reduced gas is thus hydrogen -rich. In philosophy , reduction is the process of explaining a particular phenomenon or subject matter in terms of more fu...

Peptide bond

...a partial double bond character (with the Nitrogen atom attaining a partial positive charge and the oxygen atom a partial negative charge) and the molecule can normally not rotate around this bond. The whole arra...

Nucleon

...o a neutron or a proton , the components of an atom 's nucleus . The total number of nucleons in an atom is the mass number on the atom, as nucleons each have a mass very close to one amu . See also...

Nicotinamide adenine dinucleotide

... nitrogen, and one hydrogen attaches to the carbon atom opposite to the nitrogen. The human body synthesises NAD from the vitamin niacin in the form of nicotinic acid or nicotinamide. See also Adenine Nucleotide References and external links NAD and NADP Nicotina...

More>>

atom at Biology Dictionary

Walking legs

...s. decarboxylation The removal of a single carbon atom as CO2 from an organ ic molecule . Full article >>> So for example, in a lobster, if we were able to express UBX throughout the thorax , we would expect that instead of having the five pairs of walking legs , we would actually g...

Virus

... particle. carbanion A negatively charged carbon atom . carbocation (AKA) carbonium ion A positively charged carbon atom . Full article >>> In the adeno virus E3 m RNA polyadenylated sites are 17, 26 or 2...

Thylakoids

...ptor . ground state The normal, stable form of an atom or molecule . Contrast with the excited state. Full article >>>...

Shell

... relates directly to the fact that each oxygen atom has one unpaired electron in its outer valence shell , and molecular oxygen has two unpaired electrons. Full article >>> Most molluscs have calcareous shell s and as they grow, the diameter of the shell is enlarged without alter...

Sequence

...make ATP . electronegativity The tendency for an atom to pull electrons toward itself. Full article >>> The sequence of this human genome was only a sequence of the referenced genome . And if you look at it alone, you could get the impression that the genome is some static thi...

More>>

atom at Medicine News

Stay young the Chinese way

....// Oxidation is a chemical reaction in which an atom loses its electron, and this change, if it happens in the human body, results in aging of human cells and tissue. The world medical community found in the 1990s that a kind of oxygenic molecule, scientifically called free radicals left by metabolic p...

The Benefits of Strontium in the treatment for Osteoporosis Questioned

...ate, bone tissue will contain around one strontium atom for every 100 calcium atoms. No human studies have yet reported how quickly bone strontium is washed out once treatment is stopped. An impressive increase in bone mineral density occurred in the spine (14.4%) and hip (8.3%).7. However, some caution ...

Human Diseases May Have Clue In Human-Chimp Genome Difference

... human brain diseases; the second, a single oxygen atom difference that makes humans and chimpanzees resistant to each other’s malarial parasites. This research provides examples of how studying the evolution of humans and apes from a common ancestor may yield clues to explaining human and chimpanzee dis...

Scientists Consider About New Technology Called Nanotechnology

...the matter in the universe is made up of atoms. An atom so small than even what you can imagine, is arranged in different forms to account for the variability in the various forms of matter. For example, charcoal and diamond are made up of atoms of the same element carbon. It is the spatial arrangement of...

Nanotechnologists Specify Limitation For Devising Small Machines

...t confirms the idea that the wave of a fast-moving atom shortens and lengthens depending on its distance f...ll as a few tens of billionths of a metre, and for atom optics, where the goal is to use the wave nature of atoms to make more precise sensors and study qua...

More>>

atom at Medicine Products

No data found

Search atom medicine products at Google

Search atom medicine products at Yahoo

Search atom medicine products at Msn

atom at Medicine Technology

Anacor Identifies a Novel Mechanism for Its Lead Anti-Fungal Drug, AN2690; Findings Published in Science

...fection. Researchers found thatreplacing the boron atom in AN2690 with a carbon atom inactivatedthe drug, underscoring the importance of the boron chemistry. While the anti-fungal effe...

atom at Medicine Dictionary

ACTH

...tide bond, a special linkage in which the nitrogen atom of one amino acid binds to the carboxyl carbon atom of another. Many peptides, such as the hormone s vasopressin and ACTH , ... Full article >...