نتایج جستجو برای: باند nir

تعداد نتایج: 15266  

2003
Dai-Yun Li Wen-Hung Liao

We propose to employ near-infrared (NIR) images for face recognition in reduced illumination or total darkness. A homomorphic processing technique has been developed to effectively reduce the artifact of NIR images [1]. In this paper, we proceed to construct a facial feature detection system that would function independent of the surrounding lighting condition. Firstly, we propose a classificat...

2017
Yuqiong Dai Hao Sun Sunirmal Pal Yunlu Zhang Sangwoo Park Christopher P Kabb Wei David Wei Brent S Sumerlin

Responsive systems sensitive to near-infrared (NIR) light are promising for triggered release due to efficient deep tissue penetration of NIR irradiation relative to higher energy sources (e.g., UV), allowing for spatiotemporal control over triggering events with minimal potential for tissue damage. Herein, we report star polymers containing thermally-labile azo linkages that dissociate during ...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2012
Yukihiro Ozaki

The purpose of this review article is to outline recent progress in near-infrared (NIR) spectroscopy. Some particular emphasis is put on the delineation of its versatility in analytical chemistry. NIR spectroscopy is versatile in many aspects. For example, it is electronic spectroscopy as well as vibrational spectroscopy. It is also all-round in applications from basic to practical applicat...

Journal: :Small 2016
Zhiguang Wu Tieyan Si Wei Gao Xiankun Lin Joseph Wang Qiang He

A gold nanoshell-functionalized polymer multilayer nanorocket performs self-propulsion upon the irradiation with NIR light in the absence of chemical fuel. Theoretical simulations reveal that the NIR light-triggered self-thermophoresis drives the propulsion of the nanorocket. The nanorocket also displays -efficient NIR light-triggered propulsion in -biofluids and thus holds considerable promise...

Journal: :مهندسی بیوسیستم ایران 0
سید احمد میره ای دکتری، دانشگاه تهران سید سعید محتسبی استاد، دانشگاه تهران رضا مسعودی دانشیار، دانشگاه شهید بهشتی شاهین رفیعی دانشیار، دانشگاه تهران آتوسا سادات عربانیان دانشجوی دکتری، دانشگاه شهید بهشتی

the potential of fourier transform near-infrared (ft-nir) spectroscopy technique was applied to determine moisture and soluble solids content of shahani date fruit. spectral acquisitions were carried out in reflectance mode using a ft-nir spectrophotometer in the range of 12000- 4000cm-1. three different preprocessing methods namely: multiplicative scatter correction (msc), first and second der...

2012
Sarit Cohen Shlomo Margel

BACKGROUND The use of near-infrared (NIR) fluorescence imaging techniques has gained great interest for early detection of cancer because water and other intrinsic biomolecules display negligible absorption or autofluorescence in this region. Novel fluorescent nanoparticles with potential to improve neoplasm detection sensitivity may prove to be a valuable tool in early detection of colon tumor...

2017
Shuhei Okuyama Tadanobu Nagaya Fusa Ogata Yasuhiro Maruoka Kazuhide Sato Yuko Nakamura Peter L. Choyke Hisataka Kobayashi

Near-infrared photoimmunotherapy (NIR-PIT) is a newly-established cancer treatment which employs the combination of an antibody-photoabsorber conjugate (APC) and NIR light. When NIR light is absorbed by APC-bound tissues, a certain amount of heat is generated locally. For the most part this results in a subclinical rise in skin temperature, however, excessive light exposure may cause non-specif...

2012
Jianguo Wu Ying Zhang Yingshuang Wang Ruirui Kong Lelin Hu Roland Schuele Xiaojuan Du Yang Ke

BACKGROUND NIR was identified as an inhibitor of histone acetyltransferase and it represses transcriptional activation of p53. NIR is predominantly localized in the nucleolus and known as Noc2p, which is involved in the maturation of the 60S ribosomal subunit. However, how NIR functions in the nucleolus remains undetermined. In the nucleolus, a 47S ribosomal RNA precursor (pre-rRNA) is transcri...

1999
Bryce P. Nelson Anthony G. Frutos Jennifer M. Brockman Robert M. Corn

The application of surface plasmon resonance (SPR) measurements to the study of ultrathin organic and inorganic films adsorbed onto gold surfaces utilizing nearinfrared (NIR) excitation from 800 to 1152 nm is described. SPR scanning angle measurements of film thickness are demonstrated at 814 and 1152 nm using lowpower diode and HeNe laser sources, respectively. Several advantages of SPR in the...

هدف اصلی روش‌های ادغام، تولید تصویری جدید حاوی اطلاعاتی است که به‌طور کامل محتویات تصاویر مرجع را دارا باشد. با این ‌وجود روش‌های ادغام تصاویر معمولاً با اعوجاجات طیفی و مکانی در تصویر خروجی همراه هستند. میزان این اعوجاجات با توجه به روش و نیز داده‌های مورد استفاده متغیر است. در میان روش‌های ادغام تصاویر موجود، روش IHS یکی از پرکاربردترین الگوریتم‌ها به علت کارایی بالا و نیز بالا بودن دقت مکانی ...

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