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636 matches found for "chemical substances"

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How Cells Tolerate DNA Damage – MDC Researchers Identify Start Signal for Cell Survival Program

Dr. Michael Stilmann, Dr. Michael Hinz and Professor Claus Scheidereit have shown that the protein PARP-1, which detects DNA damage within seconds, activates the transcription factor NF-kappaB, a well...

Life Sciences |

Tiny Bubbles Clean Oil from Water

Now, a University of Utah engineer has developed an inexpensive new method to remove oil sheen by repeatedly pressurizing and depressurizing ozone gas, creating microscopic bubbles that attack the oil...

Life Sciences |

Telling an old book by its smell: Aroma hints at ways of preserving treasured documents

In a report published in the American Chemical Society's Analytical Chemistry, a semi-monthly journal, they describe development of a new test that can measure the degradation of old books and pr...

Life Sciences |

Computer predicts reactions between molecules and surfaces, with 'chemical precision'

An international team of researchers, headed by Leiden theoretical chemist Geert-Jan Kroes, published on this subject this week in the journal Science. Hydrogen on copperThe team devel...

Information Technology |

Hybrid Molecules Show Promise for Exploring, Treating Alzheimer's

In order to answer that key question and develop new approaches to preventing the damage, scientists must first understand how amyloid-beta forms the telltale clumps.University of Michigan res...

Life Sciences |

Rice U. lab leads hunt for new zeolites

In all the world, there are about 200 types of zeolite, a compound of silicon, aluminum and oxygen that gives civilization such things as laundry detergent, kitty litter and gasoline. But thanks to co...

Life Sciences |

Interactions with aerosols boost warming potential of some gases

Yet the complexity of nature -- and the models used to quantify it -- continues to serve up surprises. The most recent? Certain gases that cause warming are so closely linked with the production of ae...

Studies and Analyses |

Mirror Images United

In the binding pockets of enzymes their natural binding partners fit exactly. The principle by which many pharmacological agents work also relies on the fact that these substances fit exactly into the...

Life Sciences |

Exposure to alkaline substances can result in damaged teeth

The study was carried out at the Department of Occupational and Environmental Medicine at the Sahlgrenska Academy and published in the Journal of Dentistry."The study shows that exposure ...

Studies and Analyses |

New artificial enzyme safer for nature

Custom built enzyme to replace harsh and hazardous chemicalsPerilous and polluting industrial processes can be made safer with enzymes. But only a short range of enzymes have been available fo...

Life Sciences |

Boron Nitride Nanomesh

Boron nitride is an extremely useful material for applications in material sciences and appears in an manifold of crystalline modifications, with hexagonal and cubic boron nitride as most prominent su...

Technology Offerings |

Phytochemicals in plant-based foods could help battle obesity, disease

Eating more plant-based foods, which are rich in substances called phytochemicals, seems to prevent oxidative stress in the body, a process associated with obesity and the onset of disease, according ...

Studies and Analyses |

Melanoma treatment options 1 step closer

U of A chemistry professor Dennis Hall said after three years of work, his research team has successfully produced the substance called Palmerolide A."The potency of palmerolide is except...

Life Sciences |

European deep-sea research: Climate changes and deep-sea ecosystems in the Eastern Mediterranean Sea

In the framework of their expedition, the German research vessel Maria S. Merian visits for the first time the port of Cyprus on 22 October 2009. The Maria S. Merian is one of the most modern multidis...

Earth Sciences |