نتایج جستجو برای: باند nir

تعداد نتایج: 15266  

2016
Yohei Tanaka Jun Nakayama

BACKGROUND AND OBJECTIVE Humans are increasingly exposed to near-infrared (NIR) radiation from both natural (eg, solar) and artificial (eg, electrical appliances) sources. Although the biological effects of sun and ultraviolet (UV) exposure have been extensively investigated, the biological effect of NIR radiation is still unclear. We previously reported that NIR as well as UV induces photoagin...

2013

The invasive nature and adverse side effects of surgery and chemotherapy have limited the efficacy of cancer treatment. Our laboratory has incorporated tissue penetrating near infrared (NIR) light and NIR-sensitive nanoparticles to develop a minimally invasive drug delivery system. NIR-activated release of an anticancer drug from NIR-sensitive nanoparticles could potentially reduce deleterious ...

Journal: :International Journal of Nanomedicine 2007
Jiantang Sun Ming-Qiang Zhu Kun Fu Nastassja Lewinski Rebekah A Drezek

In this paper, we report the use of lead sulfide quantum dot (PbS QD) bioconjugates as near infrared (NIR) contrast agents for targeted molecular imaging with expanded emission wavelengths beyond 1000 nm. The red-shifted emission band, coupled with the small particle size, which will facilitate clearance, both afford PbS QDs unique properties for noninvasive, high resolution in vivo NIR imaging...

Journal: :Bio-medical materials and engineering 2014
Nyeon Sik Eum Jung Hyun Han Ki Woong Seong Jong Ha Lee Hee Joon Park

The portable visible and near-infrared (NIR) imaging equipment for a pre-clinical test with small animals was designed and developed in this paper. The developed equipment is composed of a CCD camera, a focusing lens, an objective lens, a NIR band pass filter and a NIR filter driving motor. An NIR ray is mainly used for imaging equipment because it has high light penetration depth in biological...

2011
Nara Higano

We investigate the temporal behavior of flares in the NIR and millimeter regime of Sagittarius A*, the supermassive black hole in the Galactic center, observed on 2005 July 31 at the Keck II telescope, the Very Large Telescope, and the Submillimeter Array. The time lags between a VLT NIR flare and SMA millimeter flare as well as between three quasi-simultaneous Keck NIR flares are quantified th...

2013
Klaus Mangold Joseph A Shaw Michael Vollmer

The physics behind the sometimes strange effects and ‘unnatural’ appearance of near-infrared (NIR) photographs is discussed in terms of reflection, absorption and transmission of NIR radiation with the respective objects. Besides discussing how NIR cameras work, several visible and NIR photograph pairs are presented, which include vegetation, natural water, clouds, the sky, and humans. In addit...

2012
Gadi Cohen Shimon Lecht Hadar Arien-Zakay Keren Ettinger Orit Amsalem Mor Oron-Herman Eylon Yavin Diana Prus Simon Benita Aviram Nissan Philip Lazarovici

Novel strategies that target the epidermal growth factor receptor (EGFR) have led to the clinical development of monoclonal antibodies, which treat metastatic colorectal cancer (mCRC) but only subgroups of patients with increased wild type KRAS and EGFR gene copy, respond to these agents. Furthermore, resistance to EGFR blockade inevitably occurred, making future therapy difficult. Novel bio-im...

2014
Michal Kolitz-Domb Igor Grinberg Enav Corem-Salkmon Shlomo Margel

BACKGROUND The use of near-infrared (NIR) fluorescence imaging techniques has gained great interest for early detection of cancer owing to the negligible absorption and autofluorescence of water and other intrinsic biomolecules in this region. The main aim of the present study is to synthesize and characterize novel NIR fluorescent nanoparticles based on proteinoid and PLLA for early detection ...

2013
Denis Shcherbakov Alexandra Knörzer Svenja Espenhahn Reinhard Hilbig Ulrich Haas Martin Blum

Near-infrared (NIR) light constitutes an integrated part of solar radiation. The principal ability to sense NIR under laboratory conditions has previously been demonstrated in fish. The availability of NIR in aquatic habitats, and thus its potential use as a cue for distinct behaviors such as orientation and detection of prey, however, depends on physical and environmental parameters. In clear ...

Journal: :Photomedicine and laser surgery 2006
Kristina D Desmet David A Paz Jesse J Corry Janis T Eells Margaret T T Wong-Riley Michele M Henry Ellen V Buchmann Mary P Connelly Julia V Dovi Huan Ling Liang Diane S Henshel Ronnie L Yeager Deborah S Millsap Jinhwan Lim Lisa J Gould Rina Das Marti Jett Brian D Hodgson David Margolis Harry T Whelan

This review presents current research on the use of far-red to near-infrared (NIR) light treatment in various in vitro and in vivo models. Low-intensity light therapy, commonly referred to as "photobiomodulation," uses light in the far-red to near-infrared region of the spectrum (630-1000 nm) and modulates numerous cellular functions. Positive effects of NIR-light-emitting diode (LED) light tre...

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