Results 61 to 70 of about 259,360 (285)

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Wide field light-sheet microscopy with lens-axicon controlled two-photon Bessel beam illumination

open access: yesNature Communications, 2021
Here, the authors present a two-photon light-sheet microscopy with an extended Bessel beam for a tunable field of view and reduced photodamage. They demonstrate long-term imaging of cellular dynamics over the whole body of medaka fish.
Sota Takanezawa   +2 more
doaj   +1 more source

Utilizing Non-Orthogonal Polarization With Polarization Reuse Technique for 4 × 4 MIMO Capacity Enhancement

open access: yesIEEE Access, 2022
5G communication promises fast and large data stream which requires higher capacity of a cellular wireless network. A higher capacity could be achieved with wider bandwidth and network densification, but they are expensive approaches.
Laxmikant Minz   +6 more
doaj   +1 more source

Beam Entropy of 5G Cellular Millimetre-Wave Channels [PDF]

open access: yes2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall), 2019
In this paper, we obtain and study typical beam entropy values for millimetre wave (mm-wave) channel models using the NYUSIM simulator for frequencies up to 100 GHz for fifth generation (5G) and beyond 5G cellular communication systems. The beam entropy is used to quantify sparse MIMO channel randomness in beamspace.
Tiwari, Krishan Kumar   +3 more
openaire   +2 more sources

Throughput Optimal Beam Alignment in Millimeter Wave Networks

open access: yes, 2017
Millimeter wave communications rely on narrow-beam transmissions to cope with the strong signal attenuation at these frequencies, thus demanding precise beam alignment between transmitter and receiver.
Hussain, Muddassar, Michelusi, Nicolo
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Efficient Preamble Design Technique for Millimeter-Wave Cellular Systems with Beamforming

open access: yesSensors, 2016
The processing time for beam training in millimeter-wave (mmWave) cellular systems can be significantly reduced by a code division multiplexing (CDM)-based technique, where multiple beams are transmitted simultaneously with their corresponding Tx beam ...
Dae Geun Han   +2 more
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

Analisi ottica della turbolenza atmosferica

open access: yesAnnals of Geophysics, 1974
In the present paper the AA. reported some phenomena observed in a parallel light beam which propagated in the lower atmosphere. This beam was observed on a plane screen normally crossing the beam.
D. VENTURA, R. CIALDEA
doaj   +1 more source

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