Tag: "solvent" at biology news

Researchers examine carbon capture and storage to combat global warming

...e-dimensional mesh. As the gas goes up, a chemical solvent drizzles down, soaking up the gas where the two substances meet. The carbon dioxide is then extracted from the liquid and compressed, now ready for storage. The best storage options today lie in geologic sequestration-storage in old oil fields, na...

Plastic that grows on trees

...ic system containing metal chloride catalysts in a solvent capable of dissolving cellulose. The solvent, called an ionic liquid, enabled the metal chlorides to convert the sugars to HMF. Ionic liquids provide an additional benefit: It is reusable, thus produces none of the wastewater in other methods that...

Navigable nanotransport

...spheres is very uniform and depends largely on the solvent in which the linking reaction takes place. The researchers used this method to produce capsules with diameters ranging from 50 to 600 nm. The little disks used in this process deserve special consideration: Kim and his colleagues chose to use curc...

Chemicals in brown algae may protect against skin cancer

... with and without UV exposure, and two had the BAP solvent applied to the skin with and without UV exposure. The mice received the BAPs for two weeks before UVB exposure began, followed by 24 weeks of increasing UVB exposure according to a standardized schedule. The researchers then counted the numbe...

BC catalyst discovery promises faster, cheaper drug production

...catalyst is easy to prepare, requires little or no solvent and therefore minimizes waste, and can be used in air and can be recycled several times," Prof. Snapper added. "Together, these properties make our discovery an important one both from the theoretical as well as the practical point of view." "This i...

Solvent exposure linked to birth defects in babies of male painters

...to evaluate and compare the influence of resulting solvent exposures on reproductive health," said Dr. Bursty... showing that water-based paints did not eliminate solvent exposure among construction painters. Organic solvents are widely used in many industries includin...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...a cell, researchers use time-consuming fixation or solvent extraction techniques," says Brinker. "We can spin-coat a cell in seconds, pop the cell into an electron microscope, and it doesn't shrink when air is evacuated from the microscope chamber." The cell can be immediately imaged, says Brinker. "Spin-c...

Blocking the nerve receptor EP1 in mouse models reduces brain damage caused by stroke

...group of control mice received an injection of the solvent used to carry the drugs. The investigators then injected each mouse with NMDA, a drug that stimulates the NMDA receptor. Excessive stimulation of these receptors by NMDA, such as during stroke, leads to nerve cell damage. In mice that had first rec...

The right drug at the right time

...ality check, and it made us look at the problem of solvent cost sooner rather than later." Quantum dots typi...ents like octadecene, or ODE - the least expensive solvent used in quantum dot preparation today - account for about 90 percent costs of raw materials. Heat-t...

Method slashes quantum dot costs by 80 percent

...ality check, and it made us look at the problem of solvent cost sooner rather than later." Quantum dots typi...ents like octadecene, or ODE - the least expensive solvent used in quantum dot preparation today - account for about 90 percent costs of raw materials. Heat-t...

Breakthrough: Scientists create world's tiniest organic particles

...ng that it was possible to use carbon dioxide as a solvent in place of organic solvents, which polluted the environment. "We are most excited about the commercial implications of Professor DeSimone's breakthrough with PRINT," said Dr. Lowry Caudill, chairman of Liquidia. "We believe that the PRINT process i...

Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

...ys. “Chemists have understood for a while that the solvent itself plays a major part in charge transfer processes ?the ions in the solution are necessary to make the process happen. Yet almost every ‘molecular electronic?measurement made to date has been made in a vacuum or other conditions that suppress sol...

Tiny particles could solve billion-dollar problem

...dium catalysts." TCE, which is commonly used as a solvent to degrease metals and electronic parts, is one of the most common and poisonous organic pollutants in U.S. groundwater. It is found at 60 percent of the contaminated waste sites on the Superfund National Priorities List, and it is considered one of ...

UAB scientists discover the origin of a mysterious physical force

... edition of Physical Review Letters. Water is the solvent in which most physical, chemical and biological processes take place. Therefore, it is essential to understand the nature of interactions between molecules dissolved in water in order to understand many of these processes. Two of the most important o...

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