Emilius Lenz (1804–1865)

Laplace-Runge-Lenz Vector

A rare case of the lenz syndrome.

We are reporting here, a case of the Lenz syndrome in a neonate who was brought to the Paediatric OPD, Kasturba Medical College Hospital, Attavar, Mangalore India, with the complaints of poor suckling since birth and abnormal facial features. Altogether, the characteristic congenital abnormal findings in Lenz syndrome, which comprise of microophthalmia, ear anomalies, microcephaly, skeletal and...

A case of Lenz microphthalmia syndrome.

Lenz microphthalmia syndrome was first described by Lenz et al in 1955. The cardinal features of the syndrome are microphthalmia or anophthalmos, narrow shoulders, other skeletal anomalies, and dental and urogenital malformations. Here we present a case of Lenz microphthalmia syndrome who shows the typical characteristics and, additionally, dysgenesis of the corpus callosum associated with dila...

Runge - Lenz operator for Dirac field in Taub - NUT background

Fermions in D = 4 self-dual Euclidean Taub-NUT space are investigated. Dirac-type operators involving Killing-Yano tensors of the Taub-NUT geometry are explicitly given showing that they anticommute with the standard Dirac operator and commute with the Hamiltonian as it is expected. They are connected with the hidden symmetries of the space allowing the construction of a conserved vector operat...

Parachironomus Lenz from China and Japan (Diptera, Chironomidae)

Members of the genus Parachironomus Lenz known from China and Japan are revised, and a key to their male adults is given. Parachironomuspoyangensis sp. n. is described in this life stage. Parachironomusfrequens (Johannsen) and Parachironomusmonochromus (van der Wulp) are recorded from China for the first time, thus are redescribed from Chinese specimens. Parachironomuskamaabeus Sasa & Tanaka an...