this research has been carried out to study and find a rather general description for a lone pairorbital in molecules. since the orbital parameters must be manageable in advance, and correctgeometry of the molecule (bond lengths) is depend on the appropriate lone pair description; thefsgo method including optimization has been used to obtain orbital parameters and energy. theproposed models for...

Optical absorption and ESR spectra of reduced vanadium centres in Ca2NaMg2VjOlz are reported. The spectra are interpreted as arising from tetrahedrally coordinated V" and octahedrally coordinated V". The ESR and optical data are correlated using molecular orbital (MO) theory. The composition of the flux-grown single crystals is analysed and discussed.

In this article, the optimized geometry, IR and UV spectra, frontier orbital analysis, natural bond orbital (NBO) analyses, and thermodynamic parameters of pomalidomide were investigated. The calculated structural parameters and stretching frequencies values are compared with experimentalvalues of the investigated compound. Also, the relations of the thermodynamic functions vs.temperatures were...

This research has been carried out to study and find a rather general description for a lone pairorbital in molecules. Since the orbital parameters must be manageable in advance, and correctgeometry of the molecule (bond lengths) is depend on the appropriate lone pair description; theFSGO method including optimization has been used to obtain orbital parameters and energy. Theproposed models for...

Acute dacryocystitis usually induces preseptal infection. In rare instances the infection that is confined to the lacrimal sac can extend to the orbital contents resulting in orbital cellulitis. We present a case of intraconal abscess secondary to acute dacryocystitis and review the literature of orbital cellulitis resulting from acute lacrimal sac infection.

The use of the lower eyelid transconjunctival approach in the setting of orbital trauma has becoming increasingly popular in recent years. However, experience has found that access to the lateral orbital rim can be somewhat limited with this type of incision. Many authors supplement the approach with a lateral canthotomy in order to gain adequate access laterally. Although usually well tolerate...

abstract background: invasive fungal infection is an opportunistic infection caused commonly by mucoraccae and aspergillus. it mostly occurs in patients with underlying disease. since it has a high mortality and morbidity rate, considering a treatment strategy seems necessary.   objective: since there has not been a clear protocol for treating these patients, we decided to establish a protocol ...

purpose:  to report a case of lymphangioma in the lacrimal gland. case report: a 6-year old boy with acute proptosis and inferonasal displacement of the globe was referred.  in ct-scan revealed a heterogenous enlargement of the lacrimal gland. steroid therapy did not lead to a significant improvement. during surgical exploration, a dark black liquid was extracted from the site of the lacrimal g...