News tagged with atomic level
Related topics: physical review letters
Perturbation theory (quantum mechanics)
In quantum mechanics, perturbation theory is a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one. The idea is to start with a simple system for which a mathematical solution is known, and add an additional "perturbing" Hamiltonian representing a weak disturbance to the system. If the disturbance is not too large, the various physical quantities associated with the perturbed system (e.g. its energy levels and eigenstates) can, from considerations of continuity, be expressed as 'corrections' to those of the simple system. These corrections, being 'small' compared to the size of the quantities themselves, can be calculated using approximate methods such as asymptotic series. We can therefore study the complicated system based on our knowledge of the simpler one.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
An atomic-level snapshot of a respiratory syncytial virus (RSV) protein bound to a human antibody represents a leap toward developing a vaccine for a common—and sometimes very serious—childhood disease. ...
Diseases, Conditions, Syndromes Apr 25, 2013 | not rated yet | 0 |
A research team from the Korea Advanced Institute of Science and Technology (KAIST) released their results on the structure and molecular details of the neurodegenerative disease-associated protein Ataxin-1. ...
Genetics Mar 14, 2013 | 5 / 5 (2) | 0
More than 70 years after the first sulfa drugs helped to revolutionize medical care and save millions of lives, St. Jude Children's Research Hospital scientists have determined at an atomic level the mechanism these medications ...
Medical research Mar 01, 2012 | 5 / 5 (3) | 0 |
HIV is coated in sugars that usually hide the virus from the immune system. Newly published research reveals how one broadly neutralizing HIV antibody actually uses part of the sugary cloak to help bind to the virus. The ...
HIV & AIDS Nov 23, 2011 | 5 / 5 (2) | 0 |
Chinese researchers achieved a major breakthrough in the race to battle influenza by using NVIDIA Tesla GPUs to create the world's first computer simulation of a whole H1N1 influenza virus at the atomic level.
Medical research Nov 15, 2011 | 5 / 5 (2) | 0
Researchers at North Carolina State University have figured out how copper induces misfolding in the protein associated with Parkinson's disease, leading to creation of the fibrillar plaques which characterize the disease. ...
Medical research Jun 14, 2011 | 5 / 5 (4) | 0 |