Difficult superconductivity

superconductivity ∗

We present a 2+1-dimensional lattice model for the copper oxide superconductors and their parent compounds, in which both the charge and spin degrees of freedom are treated dynamically. The spin-charge coupling parameter is associated to the doping fraction in the cuprates. The model is able to account for the various phases of the cuprates and their properties, not only at low and intermediate...

Management of the difficult Airway

The appropriate airway management is the important point during the anesthesia. For it dose, ‎taking history, physical examination (head and neck, mandible, mouth opening, neck ‎movements …) must be done completely and they are helpful in estimating difficult ‎intubation.‎ It is necessary to note that one case from every ‎‏5000‏‎ cases of anesthesia, not o...

Prevention of Iodine Deficiency: Difficult to Implement, More Difficult to Sustain

Superconductivity: Microscopics

For repulsive interactions the properties of an interacting Fermi system are not qualitatively different from the noninteracting system: the quantitative values of parameters are modified as described by Fermi liquid theory. Attractive interactions however, no matter how weak, lead to an entirely new state of superconductivity. It took almost 50 years from the discovery by Kammerlingh-Onnes in ...

Solving Difficult HTM Problems Without Difficult Hardware

There are several classes of operations, including I/O and memory allocation, that are considered difficult to perform as part of a transaction. To allow such operations inside of transactions, previous hardware transactional memory systems have proposed additional mechanisms such as opennested transactions that use hardware management of software handlers. Open-nested transactions are not nece...