Results 71 to 80 of about 1,160,559 (367)

A Novel Three-Point Modulation Technique for Fractional-N Frequency Synthesizer Applications [PDF]

, 2013
This paper presents a novel three-point modulation technique for fractional-N frequency synthesizer applications. Convention modulated fractional-N frequency synthesizers suffer from quantization noise, which degrades not only the phase noise performance
Chao, Ching-Hui, Lin, Chiu-Chin, Peng, Kang-Chun   +2 more
core   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

Comparative Analysis of Super-Kamiokande and SNO Solar-Neutrino Data and the Photospheric Magnetic Field [PDF]

, 2006
We analyze Super-Kamiokande, SNO, and photospheric magnetic-field data for the common time interval, namely the SNO D2O phase. Concerning rotational modulation, the magnetic-field power spectrum shows the strongest peaks at the second and sixth harmonics
B. Aharmin, B.C. Chauhan, B.C. Chauhan, B.C. Chauhan, D.O. Caldwell, E. Rieger, E.Kh. Akhmedov, H. Saio, H.J. Haubold, H.J. Haubold, J. Papaloizou, J. Provost, J. Rybak, J. Schou, J.D. Scargle, J.D. Scargle, J.L. Ballester, K. Sakurai, K. Sakurai, N. Lomb, O.G. Miranda, P. A. Sturrock, P.A. Sturrock, P.A. Sturrock, P.A. Sturrock, P.A. Sturrock, P.A. Sturrock, P.A. Sturrock, SNO Collaboration, T. Shirai, Y. Fukuda, Y. Fukuda, Y. Fukuda   +32 more
core   +2 more sources

Gyrator frequency modulator

Electronics Letters, 1975
A frequency modulator is realised using a gyrator one of whose gyration conductances is varied with the audio signal. The gyrator, together with two capacitors, forms the tank circuit of a negative impedance convertor oscillator. A linear peak frequency deviation exceeding ±2.5% was obtained, the s.n.r. being 64 dB.
F.S. Atiya, M.H. Keriakos
openaire   +2 more sources

Social context prevents heat hormetic effects against mutagens during fish development

FEBS Letters, EarlyView.
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere, Claudio Silva De Freitas, Adam Bates, Kenneth B. Storey, Pedro Beltran‐Alvarez, Katharina C. Wollenberg Valero   +5 more
wiley   +1 more source

Optical Frequency Comb Generation Based on Dual-Polarization IQ Modulator Shared by Two Polarization-Orthogonal Recirculating Frequency Shifting Loops

IEEE Photonics Journal, 2017
A novel optical frequency comb generator (OFCG) based on a dual-polarization IQ modulator shared by two polarization-orthogonal recirculating frequency shifting (RFS) loops has been proposed. The states of polarization of two optical subcombs output from
Jianping Li, Huatao Ma, Zhaohui Li, Xiaoguang Zhang   +3 more
doaj   +1 more source

Time-periodic stiffness modulation in elastic metamaterials for selective wave filtering: theory and experimental investigations [PDF]

Phys. Rev. Lett. 122, 124301 (2019), 2018
We report on broadband-to-narrowband elastic wave filtering resulting from time-periodic modulation of the stiffness of a one-dimensional elastic waveguide. Time modulation produces flat dispersion bands at frequencies that are multiple integers of half the modulation frequency.
arxiv   +1 more source

miRNA‐29 regulates epidermal and mesenchymal functions in skin repair

FEBS Letters, EarlyView.
miRNA‐29 inhibits cell‐to‐cell and cell‐to‐matrix adhesion by silencing mRNA targets. Adhesion is controlled by complex interactions between many types of molecules coded by mRNAs. This is crucial for keeping together the layers of the skin and for regenerating the skin after wounding.
Lalitha Thiagarajan, Rosa Sanchez‐Alvarez, Chiho Kambara, Poojitha Rajasekar, Yuluang Wang, François Halloy, Jonathan Hall, Hans‐Jürgen Stark, Iris Martin, Petra Boukamp, Svitlana Kurinna   +10 more
wiley   +1 more source

Power and signal dual modulation‐based bidirectional communication between intrinsically safe converters

IET Power Electronics
In harsh operating environments such as mines and gas stations, intrinsically safe power converters are required for electronics devices. Reliable communication is the key ensuring good performance of monitoring and coordinated control for intrinsically ...
Tan Wang, Dongsheng Yu, Xudong Tang, Samson S. Yu, Yihua Hu   +4 more
doaj   +1 more source

SAR ground moving target's along-track velocity estimation in the complex image domain via SoWVD

The Journal of Engineering, 2019
A ground moving target is always defocused in the synthetic aperture radar (SAR) image domain due to the along-track velocity. In the image domain, a moving target's complex response along the azimuth direction can be modelled as a linear frequency ...
Zuzhen Huang, Zegang Ding, Canzhen Meng, Yinchao Ge   +3 more
doaj   +1 more source