The town was once considered the environmental black hole of East Germany, a chemical center where a yellow haze hovered endlessly.
She left that job and became a teacher when her husband, Stanley Seltzer, was drafted for the Korean War in 1952 and was sent to an army chemical center in Maryland.
On Thursday, the New York City Police Hazardous Materials Team called to say that officers had found several large cylinders filled with Freon, which is used in air conditioning systems, in an area that was still smoldering, according to the chemical center, known as Chemtrec.
The $53 billion (2005 sales) company now runs the two biggest landfills in Hong Kong and is testing a hazardous waste incinerator in Shanghai's main industrial chemical center.
The labeled atoms in the 2-ribosyl position are more distant from the reaction's chemical center in a C1-mechanism and give KIEs near-unity.
Chung showed that astrocytes surrounded and ingested functioning synapses via a chemical pathway centered on a pair of proteins coded by its Pac-man genes.
For both samples, the Al 2p peaks are composed of a predominant chemical state centered at ∼74.9 eV; we measured the binding energy difference between Al–O to be ∼456.6 eV, which agrees well with the previously reported binding energies of Al 2p for O Al–O in fully oxidized Al2O3 films.
Most, if not all high throughput screening (HTS) programs designed to assess the toxicity or biological effects of chemicals are centered on molecular initiating events known to be relevant to human health (Collins et al. 2008).
The P resonances exhibited a small chemical shift dispersion, centered in the spectral region characteristic of B-form DNA duplexes.
This showed that there were three regions with relative large chemical shift perturbations centered about Ile22, Leu28, and Tyr50.
The other P resonances were clustered within a modest chemical shift range, centered in the spectral region characteristic of B-DNA.
