Results 271 to 280 of about 62,417 (298)

Extending and modifying the Hall rule

Chemical Physics Letters, 2006
Abstract The Hall rule claims that the HMO total π-electron energy (E) of isomeric benzenoid hydrocarbons is a linear function of the number of Kekule structures (K). We now show that already in the case of benzenoid isomers with a small number of hexagons (4 ⩽ h ⩽ 9), E is better reproduced by a linear function of Kλ, where the exponent λ is ...
Ivan Gutman, Slavko Radenkovic
exaly   +2 more sources

Spin statistics connection and selection rule in the quantum Hall effect

Journal of Physics C: Solid State Physics, 1985
The selection rule in the quantum Hall effect is derived from the generalised spin statistics connection. For a two-dimensional fermion system, a necessary condition to have the quantum Hall effect at a filling factor v=p/q (p and q are mutual primes) is exp(ipq pi )=exp(ip2 pi ); hence q must be an odd integer.
R Tao
exaly   +2 more sources

The Kohler Rule of Hall Coefficient in Neutron‐Irradiated Aluminium at 4.6 °K

Physica Status Solidi (B): Basic Research, 1970
AbstractAn investigation is made of the range of validity of the Kohler rule for the Hall coefficient of aluminium at 4.6 °K, by introducing structural defects with different concentration and configuration by low temperature reactor irradiation and subsequent annealing.
K Boning, H Wenzl
exaly   +2 more sources

Experiments on the magnetoresistivity and hall effect in Ni and Ni alloys. The validity of Kohler's rule

Journal of Physics and Chemistry of Solids, 1967
Abstract The low temperature transverse magnetoresistivity and Hall resistivity in three high purity polycrystalline Ni samples and three very dilute Ni based alloys (Ni-Fe, Ni-Co and Ni-Cu) were measured. The results are reported on Kohler diagrams.
A.C. Ehrlich, R. Huguenin, D. Rivier
exaly   +2 more sources

13. Did the Ruling Class Rule at City Hall in 1920s Los Angeles?

2019
exaly   +2 more sources

The Rule and the Norm: Halle and Keyser on Chaucer's Meter

College English, 1970
THE THEORY OF CHAUCER'S iambic pentameter, and by extension of the English pentameter tradition, proposed in Morris Halle and Samuel J. Keyser's article in College English for December 19661 is not one to be taken lightly. The article is intricately argued, in correct and toughly objective linguistic terms; it asks the right kind of questions about the
openaire   +1 more source

On the Hall rule in the theory of benzenoid hydrocarbons

International Journal of Quantum Chemistry, 1999
In 1973, Hall noticed that the total π-electron energy (E) of isomeric benzenoid hydrocarbons is a linear function of the number of Kekule structures (K). Since then, this remarkable rule has been confirmed on a plethora of examples. Twenty years later, it was discovered that for large benzenoids (with nine or more hexagons) the E–K dependence is ...
openaire   +1 more source

Some General Input-output Rules Governing Hall Coefficient Behavior

1980
Many calculations of the ordinary weak-field Hall coefficient have been carried out during the 100 years since its discovery. This paper examines a subset of those calculations which apply to transport models satisfying certain constraints. A set of general rules are developed which link the behavior of the Hall factor r (Ro = r/ne) to three basic ...
openaire   +1 more source

Demand response potential of district heating in a swimming hall in Finland

Energy and Buildings, 2021
Xiaolei Yuan, Juha Jokisalo, Risto Kosonen   +2 more
exaly