Results 71 to 80 of about 3,650,514 (342)

Interferometrically Enhanced Intensity and Wavelength Modulation in Tunable Diode Laser Spectroscopy

Photonics
Tunable diode laser spectroscopy (TDLS) is a measurement technique with high spectral resolution. It is based on tuning the emission wavelength of a semiconductor laser by altering its current and/or its temperature.
Sander Vervoort, Marcus Wolff
doaj   +1 more source

Novel Results on SNR Estimation for Bandlimited Optical Intensity Channels

Sensors, 2023
In a previous work of the author about non-data-aided estimation of the signal-to-noise ratio (SNR) for bandlimited optical intensity channels, a couple of limitations have been identified in terms of error performance and computational complexity.
Wilfried Gappmair
doaj   +1 more source

Transverse Dynamics and Energy Tuning of Fast Electrons Generated in Sub-Relativistic Intensity Laser Pulse Interaction with Plasmas [PDF]

, 2006
The regimes of quasi-mono-energetic electron beam generation were experimentally studied in the sub-relativistic intensity laser plasma interaction. The observed electron acceleration regime is unfolded with two-dimensional-particle-in-cell simulations ...
A. Sagisaka, A. Yamazaki, Amiranoff, Andreev, Antonsen, August, Barnes, Bulanov, Bulanov, Chao, Clayton, Esarey, Esirkepov, Faure, Geddes, H. Daido, H. Kotaki, I. Daito, J. Koga, K. Nakajima, K. Ogura, Kitagawa, Liseikina, Liseikina, M. Kando, M. Mori, Malka, Mangles, Miura, Modena, Nakajima, Pukhov, S.V. Bulanov, Sprangle, Sun, T. Kimura, Tajima, Tanaka, Umstadter, Whittum, Xu, Y. Hayashi, Yamazaki   +42 more
core   +2 more sources

Unlocking Spectral Efficiency in Intensity Modulation and Direct Detection Systems

IEEE Journal on Selected Areas in Communications, 2015
A number of inherently unipolar orthogonal frequency division multiplexing (OFDM) modulation schemes have been introduced recently in an attempt to improve the energy efficiency of OFDM-based intensity modulation and direct detection (IM/DD) systems. All
D. Tsonev, S. Videv, H. Haas
semanticscholar   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Non-Data-Aided SNR Estimation for Bandlimited Optical Intensity Channels

Sensors, 2023
Powerful and reliable estimation of transmission parameters is an indispensable task in each receiver unit—not only for radio frequency, but also for optical wireless communication systems.
Wilfried Gappmair
doaj   +1 more source

Observations of Anomalous Cosmic Rays at 1 AU [PDF]

, 2000
Anomalous cosmic rays (ACRs) provide a sensitive probe of the access of energetic particles to the inner heliosphere, varying in intensity by more than two orders of magnitude during the course of the solar cycle.
Christian, E. R., Cohen, C. M. S., Cummings, A. C., Leske, R. A., Mewaldt, R. A., Slocum, P. L., Stone, E. C., von Rosenvinge, T. T., Wiedenbeck, M. E.   +8 more
core   +1 more source

PICALM::MLLT10 translocated leukemia

FEBS Letters, EarlyView.
This comprehensive review of PICALM::MLLT10 translocated acute leukemia provides an in‐depth review of the structure and function of CALM, AF10, and the fusion oncoprotein (1). The multifaceted molecular mechanisms of oncogenesis, including nucleocytoplasmic shuttling (2), epigenetic modifications (3), and disruption of endocytosis (4), are then ...
John M. Cullen, Antonia C. Nakatsugawa, Natalie Barton, Henry Haines, Gary S. Stein, Janet L. Stein, Daniel S. Wechsler, Jessica L. Heath   +7 more
wiley   +1 more source

Optical Wireless Data and Power Transfer for In‐Body Electronic Devices: A Proof‐of‐Concept Study Using Ex Vivo Porcine Samples

IET Optoelectronics
This study presents a proof‐of‐concept system for the joint wireless transfer of data and power to in‐body electronic devices (IEDs) using near‐infrared (NIR) light technology.
Syifaul Fuada, Mariella Särestöniemi, Marcos Katz   +2 more
doaj   +1 more source

On the Pulse Intensity Modulation of PSR B0823+26

, 2012
We investigate the radio emission behaviour of PSR B0823+26, a pulsar which is known to undergo pulse nulling, using an 153-d intensive sequence of observations.
A. G. Lyne, Addison, B. W. Stappers, Backer, Backer, Bartel, Becker, Bedding, Biggs, Burke-Spolaor, Burke-Spolaor, Camilo, Contopoulos, Cordes, Craft, Deich, Esamdin, Everett, Foster, Geppert, Gwinn, Hesse, Hobbs, Hobbs, Jones, Keane, Keane, Kramer, Li, Li, Li, Lorimer, Lorimer, Lyne, Lyne, M. Kramer, Maciesiak, Manchester, McLaughlin, N. J. Young, P. Weltevrede, Politis, Rankin, Rankin, Rathnasree, Rheinhardt, Ritchings, Rosen, Scargle, Shao, Templeton, Templeton, Tepedelenliogˇlu, Timokhin, Urpin, van Leeuwen, Wang, Wang, Zhang, Zoubir   +59 more
core   +1 more source