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Showing 1 to 12 of 15 entries
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Implementing receptive fields with excitatory and inhibitory optoelectrical responses of bacteriorhodopsin films.

Applied optics

Takei H, Lewis A, Chen Z, Nebenzahl I.
PMID: 20582020
Appl Opt. 1991 Feb 01;30(4):500-9. doi: 10.1364/AO.30.000500.

The sign of the optoelectrical response of bacteriorhodopsin is highlighted as a means to emulate excitation and inhibition in neural computation. A classic example of a neural computation that is based on such excitation and inhibition is chosen to...

Perinatal hypoxia leads to primordial follicle activation and premature depletion of ovarian reserve.

The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians

Gutzeit O, Iluz R, Ginsberg Y, Nebenzahl K, Beloosesky R, Weiner Z, Fainaru O.
PMID: 34121582
J Matern Fetal Neonatal Med. 2021 Jun 13;1-5. doi: 10.1080/14767058.2021.1937985. Epub 2021 Jun 13.

BACKGROUND: The human ovary contains 6-million follicles during the 20th week of embryonic development and 1 million at birth. Girls born at small for gestational age weight demonstrate higher FSH levels during infancy, an earlier onset of puberty, and...

Real-time Nyquist signaling with dynamic precision and flexible non-integer oversampling.

Optics express

Schmogrow R, Meyer M, Schindler PC, Nebendahl B, Dreschmann M, Meyer J, Josten A, Hillerkuss D, Ben-Ezra S, Becker J, Koos C, Freude W, Leuthold J.
PMID: 24514981
Opt Express. 2014 Jan 13;22(1):193-209. doi: 10.1364/OE.22.000193.

We demonstrate two efficient processing techniques for Nyquist signals, namely computation of signals using dynamic precision as well as arbitrary rational oversampling factors. With these techniques along with massively parallel processing it becomes possible to generate and receive high...

Temporal and spatial development of myocardial infarcts in porcine hearts without significant collateral blood flow.

Texas Heart Institute journal

Klein HH, Schubothe M, Nebendahl K, Kreuzer H.
PMID: 15227076
Tex Heart Inst J. 1984 Jun;11(2):154-9.

To evaluate the time-dependent beneficial effect of reperfusion on infarct size, we investigated the temporal and spatial development of infarcts in porcine hearts. The left anterior descending coronary artery was occluded in 17 pigs for different periods of time....

Full flex-grid asynchronous multiplexing demonstrated with Nyquist pulse-shaping.

Optics express

Schindler PC, Schmogrow R, Wolf S, Baeuerle B, Nebendahl B, Koos C, Freude W, Leuthold J.
PMID: 24921791
Opt Express. 2014 May 05;22(9):10923-37. doi: 10.1364/OE.22.010923.

We demonstrate full flex-grid operation with Nyquist frequency division multiplexing. The technique supports high spectral efficiency, asynchronous operation of channels, variable channel loading with different modulation formats and dynamic bandwidth allocation. Data from different sources with different bit and...

Saturable absorption, wave mixing, and phase conjugation with bacteriorhodopsin.

Optics letters

Werner O, Fischer B, Lewis A, Nebenzahl I.
PMID: 19771014
Opt Lett. 1990 Oct 15;15(20):1117-9. doi: 10.1364/ol.15.001117.

Bacteriorhodopsin exhibits strong nonlinear and saturation behavior with very low light intensities (~10 mW/cm(2)). A model and an experimental study of the saturation are described. Four-wave mixing experiments are used for obtaining phase conjugation and information on the holographic...

Kalman filter carrier and polarization-state tracking.

Optics letters

Marshall T, Szafraniec B, Nebendahl B.
PMID: 20596194
Opt Lett. 2010 Jul 01;35(13):2203-5. doi: 10.1364/OL.35.002203.

Application of Kalman filtering with a novel nearest-symbol constraint enables dynamic tracking of carrier phase and polarization state. Thereby, the proposed Kalman filter accomplishes demodulation of optical polarization-multiplexed complex modulation format signals.

Effector granules in human T lymphocytes: the luminal proteome of secretory lysosomes from human T cells.

Cell communication and signaling : CCS

Schmidt H, Gelhaus C, Nebendahl M, Lettau M, Lucius R, Leippe M, Kabelitz D, Janssen O.
PMID: 21255389
Cell Commun Signal. 2011 Jan 21;9(1):4. doi: 10.1186/1478-811X-9-4.

BACKGROUND: Cytotoxic cells of the immune system have evolved a lysosomal compartment to store and mobilize effector molecules. In T lymphocytes and NK cells, the death factor FasL is one of the characteristic marker proteins of these so-called secretory...

Experimental repetitive quantum error correction.

Science (New York, N.Y.)

Schindler P, Barreiro JT, Monz T, Nebendahl V, Nigg D, Chwalla M, Hennrich M, Blatt R.
PMID: 21617070
Science. 2011 May 27;332(6033):1059-61. doi: 10.1126/science.1203329.

The computational potential of a quantum processor can only be unleashed if errors during a quantum computation can be controlled and corrected for. Quantum error correction works if imperfections of quantum gate operations and measurements are below a certain...

Nebenzahl, Ron, and Rostoker reply.

Physical review letters

Nebenzahl I, Ron A, Rostoker N.
PMID: 10040154
Phys Rev Lett. 1989 Jun 19;62(25):3012. doi: 10.1103/PhysRevLett.62.3012.

No abstract available.

Reflected phase-conjugate wave in a plasma.

Physical review letters

Nebenzahl I, Ron A, Rostoker N.
PMID: 10037923
Phys Rev Lett. 1988 Mar 14;60(11):1030-1032. doi: 10.1103/PhysRevLett.60.1030.

No abstract available.

Timing, carrier frequency and phase recovery for OFDM and Nyquist signals using a mean modulus algorithm.

Optics express

Schmogrow R, Nebendahl B, Josten A, Schindler PC, Koos C, Freude W, Leuthold J.
PMID: 24787823
Opt Express. 2014 Apr 21;22(8):9344-59. doi: 10.1364/OE.22.009344.

Efficient algorithms for timing, carrier frequency and phase recovery of Nyquist and OFDM signals are introduced and experimentally verified. The algorithms exploit the statistical properties of the received signals to efficiently derive the optimum sampling time, the carrier frequency...

Showing 1 to 12 of 15 entries