Results 71 to 80 of about 2,421,794 (345)

Mode-division-multiplexing of multiple Bessel-Gaussian beams carrying orbital-angular-momentum for obstruction-tolerant free-space optical and millimetre-wave communication links [PDF]

, 2016
We experimentally investigate the potential of using ‘self-healing’ Bessel-Gaussian beams carrying orbital-angular-momentum to overcome limitations in obstructed free-space optical and 28-GHz millimetre-wave communication links. We multiplex and transmit
Ahmed, Nisar, Almaiman, Ahmed, Ashrafi, Solyman, Huang, Hao, Lavery, Martin P. J., Li, Long, Liao, Peicheng, Molisch, Andreas F., Ren, Yongxiong, Tur, Moshe, Wang, Zhe, Willner, Alan E., Willner, Asher J., Xie, Guodong, Yan, Yan, Zhao, Zhe   +15 more
core   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Lorentz Beams

, 2005
A new kind of tridimensional scalar optical beams is introduced. These beams are called Lorentz beams because the form of their transverse pattern in the source plane is the product of two independent Lorentz functions.
Abramowitz M, Gutierrez-Vega J C, Naqwi A, Olver P, Omar El Gawhary, Sergio Severini, Sheppard C J R, Wünsche A   +7 more
core   +2 more sources

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

Parametric matrix models

Nature Communications
We present a general class of machine learning algorithms called parametric matrix models. In contrast with most existing machine learning models that imitate the biology of neurons, parametric matrix models use matrix equations that emulate physical ...
Patrick Cook, Danny Jammooa, Morten Hjorth-Jensen, Daniel D. Lee, Dean Lee   +4 more
doaj   +1 more source

Rhomboid prism pair for rotating the plane of parallel light beams [PDF]

, 1982
An optical system is described for rotating the plane defined by a pair of parallel light beams. In one embodiment a single pair of rhomboid prisms have their respective input faces disposed to receive the respective input beams.
Orloff, K. L., Yanagita, H.
core   +1 more source

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

FEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon, Angéla Békesi, Latifa Kazzazy, Jázmin Mihály, Máté Varga, Beáta G. Vértessy, Kinga Nyíri   +6 more
wiley   +1 more source

Flexural analysis of concrete beams longitudinally reinforced with GFRP bars using discrete element model [PDF]

, 2011
This paper presents experimental and analytical study related to the flexural behavior of concrete beams longitudinally reinforced with GFRP bars. The specimens consist of simply supported reinforced concrete beams with two point load.
Suki, Nauwal
core  

Polarization of tightly focused laser beams

, 2003
The polarization properties of monochromatic light beams are studied. In contrast to the idealization of an electromagnetic plane wave, finite beams which are everywhere linearly polarized in the same direction do not exist.
Barakat R, Barakat R, Born M, Boyd G D, Brosseau C, Davis L W, Hajnal J V, Hajnal J V, Hurwitz H, Jackson J D, John Lekner, Kogelnik H, Lekner J, Lekner J, Lekner J, Nisbet A, Nye J F, Nye J F, Nye J F, Nye J F, Sheppard C J R, Ulanowski Z   +21 more
core   +1 more source

Propagation of Vortex Electron Wave Functions in a Magnetic Field [PDF]

, 2012
The physics of coherent beams of photons carrying axial orbital angular momentum (OAM) is well understood and such beams, sometimes known as vortex beams, have found applications in optics and microscopy.
A. Zee, A. Zee, Amnon Yariv, Ben McMorran, Gregg M. Gallatin, Hagen Kleinert, J. J. Sakurai, Richard P. Feynman, Richard P. Feynman   +8 more
core   +1 more source