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Photophysics of squaraine dyes: role of charge-transfer in singlet oxygen production and removal.
J Phys Chem A
February 2010
Department of Materials Science and INSTM, University of Milano-Bicocca, via Cozzi, 53, I-20125, Milano, Italy.
The unique optical properties of squaraines render these molecules useful for applications that range from xerography to photodynamic therapy. In this regard, squaraines derived from the condensation of nitrogen-based heterocycles and squaric acid have many promising attributes. Key solution-phase photophysical properties of six such squaraines have been characterized in this study.
View Article and Find Full Text PDFPrior knowledge, fluid intelligence (Gf), and crystallized intelligence (Gc) were investigated as predictors of learning new information about cardiovascular disease and xerography with a sample of 199 adults (19 to 68 years). The learning environment included a laboratory multimedia presentation (high-constraint-maximal effort), and a self-directed at-home study component (low-constraint-typical performance). Results indicated that prior knowledge and ability were important predictors of knowledge acquisition for learning.
View Article and Find Full Text PDFImaging evaluation of laryngotracheal stenosis.
J Otolaryngol
August 1993
Department of Otolaryngology, Cleveland Clinic Foundation, Ohio 44195.
Laryngotracheal stenosis (LTS) may afflict patients in all stages of life. Congenital subglottic stenosis is the third most common upper airway anomaly encountered in infants and neonates after laryngomalacia and vocal cord paralysis or fixation. It is a complex condition that demands arduous, often frustrating, efforts at all stages of management.
View Article and Find Full Text PDF[Integrated diagnostic imaging in the study of tumors of the periskeletal soft tissues].
Radiol Med
May 1993
Istituto di Radiologia, Università Cattolica Sacro Cuore, Roma.
Integrated diagnostic imaging is nowadays an extremely valuable tool in the study of periskeletal soft tissue tumors, relative to their diagnosis, prognosis and treatment. In the past, difficulties arose from the complex embryogenetic factors causing the tumors, from the different growth patterns and courses of the lesions themselves, and finally from poor development of technology specifically designed to study the soft tissues. Today, such new imaging methods as CT and MRI exhibit special features allowing the accurate study of the soft tissues and their conditions.
View Article and Find Full Text PDFProblem neck, hyoid bone, and submental myotomy.
Plast Reconstr Surg
November 1992
Division of Plastic Surgery, Mt. Sinai Medical Center, Cleveland, Ohio.
Despite significant attention to the cervical region over the last two decades, the hyoid bone has not received deserved recognition. In this report, the anatomy and role of the hyoid bone and suprahyoid muscles in cervicomental morphology are reviewed. From an analysis of cephaloxerograms on 54 patients, it was concluded that on a balanced neck, the most caudal border of the hyoid body is located at or above a line parallel to the Frankfort horizontal line passing through the most caudal border of the mandibular symphysis (menton).
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