نتایج جستجو برای: laser fluorescence

تعداد نتایج: 283828  

Journal: :Applied optics 1994
H Edner J Johansson S Svanberg E Wallinder

Multicolor imaging of vegetation fluorescence following laser excitation is reported for distances of 50 m. A mobile laser-radar system equipped with a Nd:YAG laser transmitter and a 40-cm-diameter telescope was utilized. The laser light was Raman shifted to 397 nm with pulse energies of ˜ 30 mJ. An image-intensified CCD camera with a specially designed split-mirror Cassegrainian telescope was ...

Journal: :Journal of Chemical Education 1982

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده پزشکی 1390

nitric oxide (no) is a small molecule synthesized by most of mammalian cells with diverse biological activities including vasodilatation, host defense and wound healing. impaired wound healing is a common occurrence among diabetics and patients receiving glucocorticoid therapy. on the other hand the application of laser in biomedical area have been increased. thus, the current studies were desi...

2015
Tie-Jun Wang Yingxia Wei Yaoxiang Liu Na Chen Yonghong Liu Jingjing Ju Haiyi Sun Cheng Wang Haihe Lu Jiansheng Liu See Leang Chin Ruxin Li Zhizhan Xu

Laser based lightning control holds a promising way to solve the problem of the long standing disaster of lightning strikes. But it is a challenging project due to insufficient understanding of the interaction between laser plasma channel and high voltage electric filed. In this work, a direct observation of laser guided corona discharge is reported. Laser filament guided streamer and leader ty...

Journal: :Swedish dental journal 1985
F Sundström K Fredriksson S Montán U Hafström-Björkman J Ström

Fluorescence spectra of dentine and enamel illuminated with laser light of wavelengths of 337, 488, 515 and 633 nm respectively were recorded. The fluorescence obtained by illumination with UV laser light at 337 nm had a peak at about 400 nm in dentine as well as enamel. Compared to intact enamel the fluorescence from enamel with initial carious lesions was of lower intensity and had a slight r...

Journal: :Archives of ophthalmology 2003
Masayuki Horiguchi Shima Nagata Naoki Yamamoto Yoshihisa Kojima Yoshiaki Shimada

OBJECTIVE To determine the elimination kinetics of indocyanine green (ICG) after intraocular operations using ICG staining. METHODS Intraocular fluorescence of ICG was determined using the ICG angiographic mode of a scanning laser ophthalmoscope (in vivo) and fluorescence microscopy (in vitro) after circular curvilinear capsulorhexis with ICG staining during cataract surgery and internal limi...

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