Results 41 to 50 of about 1,185,745 (318)

Chirped pulse Raman amplification in plasma

, 2011
Raman amplification in plasma has been proposed to be a promising method of amplifying short radiation pulses. Here, we investigate chirped pulse Raman amplification (CPRA) where the pump pulse is chirped and leads to spatiotemporal distributed gain ...
J P Farmer, Ersfeld, Bernhard, Raj, Gaurav, R C Issac, S M Wiggins, Brunetti, Enrico, Lyachev, Andrey, Issac, Riju, Welsh, Gregor H., Wiggins, Mark, Vieux, Gregory, A Lyachev, Farmer, John Patrick, Jaroszynski, Dino, G H Welsh, D A Jaroszynski, Yang, Xue, B Ersfeld, E Brunetti, G Raj, G Vieux, X Yang   +21 more
core   +1 more source

Wavelength and duration tunable 10 GHz 1.3ps pulse source using dispersion decreasing fiber based distributed Raman amplification [PDF]

, 2004
We experimentally demonstrate a novel pulse compression scheme using dispersion decreasing fiber (DDF) based distributed Raman amplification. We adiabatically compress 10GHz, 13ps seed pulses generated using a commercially available electro-absorption ...
Richardson, D.J., Kogure, T., Lee, J.H.
core   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

FEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas, Brigitta Maruzs, Zsófia E. Kálmán, Tomas Klumpler, Gyula Batta, Bálint Péterfia, Zoltán Gáspári   +6 more
wiley   +1 more source

80-Gb/s OTDM system analysis of a vertical microcavity-based saturable absorber for the enhancement of pulse pedestal suppression [PDF]

, 2007
In future high-speed optical time-division-multiplexed (OTDM) systems, an important factor that needs to be considered for optical pulse generation schemes is the impact of pulse pedestals on the overall system performance.
Anandarajah, Prince M., Simon, J.-C., Clarke, A.M., Oudar, Jean-Louis, Anandarajah, P.M., Massoubre, D., Anandarajah, Prince, M., Simon, Jean Claude, Bramerie, L., Maher, R., Guignard, Celine, Barry, Liam P., Bramerie, Laurent, Massoubre, David, Clarke, Aisling M., Simon, Jean-Claude, Barry, L.P., Shen, A., Oudar, J.L., Clarke, Aisling, M., Guignard, C., Barry, Liam, P., Maher, Robert D., Shen, Alexandre   +23 more
core   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Speciesism, Subjectivity, and Becoming-Other in Michel Faber’s Novel Under the Skin

Pulse, 2023
This paper undertakes a critical analysis of Michel Faber’s novel, Under the Skin (2000), with the aim to explore ethical relations between different species.
Iana Fishova
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Investigation of pulse pedestal and dynamic chirp formation on picosecond pulses after propagation through an SOA [PDF]

, 2005
The authors investigate the propagation of picosecond pulses through semiconductor optical amplifiers using the measurement technique of frequency resolved optical gating.
Anandarajah, Prince M., Clarke, A.M., Anandarajah, P., Liam P. Barry (12581653), A.M. Clarke (12581647), D. Reid (3183057), Michael J. Connelly (12581632), Reid, Douglas A., Barry, Liam P., Reid, D., Clarke, Aisling M., Connelly, Michael J., P. Anandarajah (12581650)   +12 more
core   +1 more source

(AI)sland Ecologies: Toward New Metaphors and Models of Artificial Intelligence

Pulse, 2023
This article examines the application of ecological metaphors to socio-technical systems. This is a long and contested tradition that has often been critiqued for misapplying biological principles to the understanding of socio-technical systems.
Rhea Jiang
doaj   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

FEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara, Kinga Skoczek, Elzbieta Pyza, Milena Damulewicz   +3 more
wiley   +1 more source