Isomerism or Heterotaxy syndromes are rare multifaceted congenital anomalies with multi-system involvement. Grouped under the broad category of Situs Ambiguous defects, these often pose diagnostic difficulties due to their varied and confusing anatomy. Since patients rarely survive into adulthood due to cardiovascular complications, the etiology and natural history of such conditions are not fu...

We present an isomerism strategy to study the substitution position of perylene diimides on performances aggregation-induced emission (AIE) and two-photon absorption (2PA). Interestingly, enhanced AIE 2PA have been achieved.

the acidity constants (pka) of thirty four (34) ;-substituted carboxylic acids in aqueous solution havebeen calculated using conductor-like polarizable continuum (c-pcm) solvation model. the gasphaseenergies at the density functional theory (dft-mpw1pw91) and solvation energies athartree fock (hf) are combined to estimate the pka values which are very close to the experimentalvalues where, and ...

Conformational isomerism of a ball-shaped cyclophane of cyclen was studied using NMR and computational methods with the most notable conformer containing a highly symmetric cyclic benzene tetramer.

An unprecedented example of supramolecular isomerism based on 2D hydrogen-bonded multi-component networks that leads to the preparation of different photoproducts via a topochemical transformation is reported.

Aims: Evidence is emerging that, in the setting of isomerism, atrial and bronchial arrangement are not always concordant, nor these patterns harmonious with abdominal organs. We aimed to evaluate concordance between features a cohort patients cardiac malformations known seeking determine whether it was feasible assess complexity on this basis, regard taking note potential value as opposed appen...

BACKGROUND Atrioventricular septal defects (AVSD) are very commonly diagnosed in utero. Heterotaxy/chromosomal abnormalities frequently coexist with AVSD. However, outcomes of fetal AVSD are not precisely known. We attempted to define mortality risk factors in AVSD. METHOD We retrospectively searched our database, electronic records, and echocardiograms with diagnosis of fetal AVSD from 2003 ...