We report on a novel dibenzothiophene-based two-photon fluorescent probe for selective nuclear bioimaging, which contains bilaterally symmetrical pyridine rings connected by a central conjugated-bridge dibenzothiophene. This probe possesses a large two-photon absorption cross-section of 471 GM, yields a 25-fold enhancement of the fluorescence titration, and a stronger photostability for nuclei labeling than existing probes. The real-time observation period is a minimum of 1800 s under a femtosec

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此资源为18M的PDF MedVis曾发布过10M压缩版，内容一样，图像稍微有模糊： http://download.csdn.net/source/1830518 请自取所需 《医学图像基础》Fundamentals of Medical Imaging 2E Cambridge University Press | 2009-08-31 | ISBN: 0521519152 | 264页 | PDF | 18.37 MB Fundamentals of Medical Imaging, 2nd Edition is an invaluable technical introduction to each imaging modality, explaining the mathematical and physical principles and giving a clear understanding of how images are obtained and interpreted. Individual chapters cover each imaging modality - radiography, CT, MRI, nuclear medicine and ultrasound - reviewing the physics of the signal and its interaction with tissue, the image formation or reconstruction process, a discussion of image quality and equipment, clinical applications and biological effects and safety issues. Subsequent chapters review image analysis and visualization for diagnosis, treatment and surgery. New to this edition: • Appendix of questions and answers • New chapter on 3D image visualization • Advanced mathematical formulae in separate text boxes • Ancillary website containing 3D animations: www.cambridge.org/suetens • Full colour illustrations throughout Engineers, clinicians, mathematicians and physicists will find this an invaluable aid in understanding the physical principles of imaging and their clinical applications. More：http://www.boxuesky.com/thread-63939-1-1.html

1Introduction 2The Visual System 3 Theory of Color Image Formation 4 Color Reproduction 5 Color Spaces 6 Algorithms for Color Constancy under Uniform Illumination 7 6 Algorithms for Color Constancy under nonUniform Illumination 。。。。。。。。。

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