Results 11 to 20 of about 2,307,247 (300)

Intensity Modulation of Pseudocolor Images [PDF]

BioTechniques, 1998
Fura-2 is a popular real-time fluorescent indicator used to image intracellular, free calcium concentrations ([Ca2+]i) in living cells. One difficulty with fura-2-based digital imaging is how to best display the [Ca2+]i information that is acquired ...
Lee E. Hinman, Paul J. Sammak
doaj   +3 more sources

Rotational modulation and local time dependence of Saturn's infrared H3+ auroral intensity [PDF]

, 2012
Planetary auroral emissions reveal the configuration of magnetospheric field-aligned current systems. In this study, Cassini Visual and Infrared Mapping Spectrometer (VIMS) observations of Saturn's pre-equinox infrared H3+ aurorae were analysed to show ...
Baines, K. H., Badman, S. V., Kimura, T., Tao, C., Lamy, L., Stallard, T., Provan, G., Fujimoto, M., Andrews, D. J., Melin, H., Kasahara, S., Brown, R. H., Cowley, S. W. H.   +12 more
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Bandlimited Intensity Modulation [PDF]

IEEE Transactions on Communications, 2012
In this paper, the design and analysis of a new bandwidth-efficient signaling method over the bandlimited intensity-modulated direct-detection (IM/DD) channel is presented. The channel can be modeled as a bandlimited channel with nonnegative input and additive white Gaussian noise (AWGN).
Mehrnaz Tavan, Erik Agrell, Johnny Karout   +2 more
openaire   +4 more sources

Intensity-modulated radiotherapy - what is it? [PDF]

Cancer Imaging, 2004
Intensity-modulated radiotherapy (IMRT) is one of the most important recent developments in oncology. It enables precise conformation of the radiation dose to the target volume. It has the potential to significantly reduce long-term morbidity and improve local control.
Taylor, A, Powell, M E B
openaire   +2 more sources

Intensity modulated proton therapy [PDF]

The British Journal of Radiology, 2015
Intensity modulated proton therapy (IMPT) implies the electromagnetic spatial control of well-circumscribed "pencil beams" of protons of variable energy and intensity. Proton pencil beams take advantage of the charged-particle Bragg peak-the characteristic peak of dose at the end of range-combined with the modulation of pencil beam variables to create ...
H M, Kooy, C, Grassberger
openaire   +2 more sources

Direct and external intensity modulation in OFDM RoF links [PDF]

, 2014
This article is available Open Access to view at: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7158985Radio-over-fiber (RoF) systems comprise light modulation and transmission of millimeter-wave signals over fiber links.
Cosmas, John P., Glover, Ian A., Lazaridis, Pavlos I., Zaharias D. Zaharis, Lazaridis, PI, Prasad, NR, Ian A. Glover, Khwandah, Sinan, Khwandah, SA, Zaharis, ZD, Zaharis, Zaharias D., Cosmas, JP, Glover, Ian, Prasad, Neeli R., John P. Cosmas, Cosmas, John, Glover, IA, Lazaridis, Pavlos, Sinan A. Khwandah, Neeli R. Prasad, Pavlos I. Lazaridis, Prasad, Neeli, Khwandah, Sinan A.   +22 more
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Performance of BPSK subcarrier intensity modulation free-space optical communications using a log-normal atmospheric turbulence model [PDF]

, 2010
In this paper, we present simulation results for the bit error rate (BER) performance and the fading penalty of a BPSK - subcarrier intensity modulation (BPSK-SIM) free-space optical (FSO) communication link in a log-normal atmospheric turbulence model ...
S. S. Muhammad, Z. Ghassemlooy, E. Leitgeb, Tang, Xuan, Muhammad, Sajid Sheikh, S. Rajbhandari, Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, W. O. Popoola, Kandus, Gorazd, Leitgeb, Erich, Rajbhandari, Sujan, X. Tang, G. Kandus   +13 more
core   +1 more source

MIMO free-space optical communication employing subcarrier intensity modulation in atmospheric turbulence channels [PDF]

, 2009
In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel ...
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Wasiu O. Popoola, Ahmadi, Vahid, Erich Leitgeb, Leitgeb, Erich, Vahid Ahmadi, Zabih Ghassemlooy   +7 more
core   +1 more source

Intensity-Modulated Radiotherapy

The Cancer Journal, 2002
Intensity-modulated radiotherapy represents a recent advancement in conformal radiotherapy. It employs specialized computer-driven technology to generate dose distributions that conform to tumor targets with extremely high precision. Treatment planning is based on inverse planning algorithms and iterative computer-driven optimization to generate ...
Steven A, Leibel, Zvi, Fuks, Michael J, Zelefsky, Suzanne L, Wolden, Kenneth E, Rosenzweig, Kaled M, Alektiar, Margie A, Hunt, Ellen D, Yorke, Linda X, Hong, Howard I, Amols, Chandra M, Burman, Andrew, Jackson, Gikas S, Mageras, Thomas, LoSasso, Laura, Happersett, Spiridon V, Spirou, Chen-Shou, Chui, C Clifton, Ling   +17 more
openaire   +4 more sources

Ultra-Wide and Flattened Optical Frequency Comb Generation Based on Cascaded Phase Modulator and LiNbO3-MZM Offering Terahertz Bandwidth

IEEE Access, 2020
In this paper, a new technique for generation of ultra-wide and flattened optical frequency comb (OFC) based on serial cascading of a phase modulator and dual-driven Lithium-Niobate Mach Zehnder modulator (DD-LiNbO3-MZM) is proposed.
Sibghat Ullah, Rahat Ullah, Qi Zhang, Hafiz Ahmad Khalid, Kamran Ali Memon, Adil Khan, Feng Tian, Xin Xiangjun   +7 more
doaj   +1 more source