For the mixed-valent chromophore, (NC)5Os-CN-Ru(NH3)5, spin-orbit coupling and ligand-field asymmetry effects lead to multiple visible region intervalence (metal-to-metal) charge transfer transitions (Forlando et al. Inorg. Chim. Acta 1994, 223, 37). The higher energy transition is associated with transfer from an Os 5dπ orbital that is nominally orthogonal to the charge transfer axis. The lowe...

Ab initio electronic structure calculations on model cations containing a disulfide linkage and a protonated amine site are carried out to examine ow the rate of electron transfer from a Rydberg orbital on the amine site to the S S * orbital depends upon the distance between these two rbitals. These simulations are relevant to both electron-capture and electron-transfer dissociation mass spectr...

We study orbital and spin-orbit proximity effects in graphene adsorbed to the Cu(111) surface by means of density functional theory (DFT). The proximity effects are caused mainly by the hybridization of graphene π and copper d orbitals. Our electronic structure calculations agree well with the experimentally observed features. We carry out a graphene-Cu(111) distance dependent study to obtain p...

in this study, the diversity and distribution of economical bony fishes in less-than-ten-meter depths, cpue and population features such as total length, weight and age were investigated in the southern part of the caspian sea in 1385-6. sampling was done in five regions: amir abad, larim, izdeh, kheyroud, and nashtarood with gilnet in mesh sizes of 26, 33, 40, 60, 100, and 150 mm. in total, 22...

Stability of images on the retina was determined in 14 normal humans in response to rotational and translational perturbations during self-generated pitch and yaw, standing, walking, and running on a treadmill. The effects on image stability of target distance, vision, and spectacle magnification were examined. During locomotion the horizontal and vertical velocity of images on the retina was <...

American cooperative group in 1972, the Intergroup Rhabdomyosarcoma Study Group has undertaken a series of clinical trials that have employed chemotherapy, surgery, and irradiation for local control. The addition of systemic chemotherapy has markedly improved long-term survival in affected children. These children now have an excellent prognosis with current multimodality therapy. A recent revi...

The aim of the present study was to investigate the prevalence and severity of alveolar bone loss and angular bony defects in randomly selected panoramic radiographs. A total of 500 panoramic radiographs of adult patients seeking dental care were studied. The mean age of the subjects was 51 years (range 20-80). The assessments of alveolar bone levels and angular bony defects were performed by d...

purpose : to present a case of orbital cellulitis secondary to dacryocystitis case report : a 48-year-old postmenopausal lady was referred with a prominent proptosis of the right eye in addition to external ophthalmoplegia. she had one year history of lacrimation. orbital computed tomography (ct) revealed an extraconal infiltration near the medial and inferior orbital wall consistent with orbit...

flective, with a regular structure and moderate sound attenuation. This tumorwascharacteristicof pleomorphicadenomainseveralways. The patient had a painless change in appearance for at least 1 year. The lesionwasoval,wellcircumscribed,and appeared encapsulated on both computed tomographic and ultrasonographic studies. However, it showed significant,diffusecalcificationonboth imaging studies. In...

Background: Mucoceles are slowly expanding cystic lesions with respiratory epithelium containing mucus most commonly affecting the frontal and ethmoidal sinuses. They are caused by obstruction of sinus ostium. Mucoceles exert pressure on the bony boundaries and due to the proximity to the brain and orbit extension to these areas are common. Case presentation: A case of a frontal mucocele with a...