منابع مشابه
Modern Optics and Spectroscopy
Breast cancer is the second most common cancer accounting for one in every three cancers diagnosed in American women. Currently breast cancer screening is performed by a combination of annual clinical breast examinations and x-ray mammography. However, only 1025% of the suspicious lesions detected during mammography are in fact malignant. This high rate of false positive mammographic screening ...
متن کاملModern Optics and Spectroscopy
Optical Coherence Tomography (OCT) is a novel biomedical imaging technique which uses lowcoherence optical interferometry to obtain micron-scale resolution tomographic images of subsurface tissue structure noninvasively. We have developed OCT scanners compatible with minimally invasive delivery technologies (i.e., biomicroscopy, endoscopy) capable of imaging up to video rate. Clinical studies o...
متن کاملModern Optics and Spectroscopy
The research group at Columbia University investigated carrier dynamics in SWNTs in micellar solution. They found that nonradiative Auger recombination is an important mechanism of fluorescence quenching in SWNTs. At low pH, nanotube surface endoperoxides protonate and introduce holes that quench the luminescence. In order to characterize electronic structure of SWNTs at the single-tube level, ...
متن کاملModern Map Methods for Charged Particle Optics
The Diierential Algebraic Methods, a natural tool for the description and determination of the solution of diierential equations, have proven useful for the computation of aberrations of any desired order in any particle optical system. Besides conventional symplectic systems based on strongly or weakly focusing elements including fringe elds, they also readily allow the treatment of spin dynam...
متن کاملIbn Al-Haytham: father of modern optics.
After the fall of the Roman Empire in AD 476, scientific progress in Europe had come to a standstill. This era between fall of Rome and the Renaissance is commonly known as the dark ages. However, from the 8th till 13th century, scientific and cultural knowledge had flourished in the Islamic world. This period, which began soon after the establishment of the Abbasid Khalifate in Baghdad in the ...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 1978
ISSN: 0531-7479,1432-1092
DOI: 10.1051/epn/19780910009