Results 31 to 40 of about 1,058,891 (298)

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

FEBS 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

Voltage induced spreading and liquid optical devices [PDF]

, 2013
An experimental investigation has been carried out into Liquid dielectrophoresis (LDEP), in which dielectric forces are used to actuate bulk liquid spreading and to imprint a deformation pattern at a liquid air surface.
Sampara, N
core  

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

FEBS 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, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Optical trapping with superfocused high-M2 laser diode beam [PDF]

, 2015
Many applications of high-power laser diodes demand tight focusing. This is often not possible due to the multimode nature of semiconductor laser radiation possessing beam propagation parameter M2 values in double-digits.
Kuchinskii, V. I., S. N. Loseva, Deryagin, A. G., M. Farsarib, Soboleva, K.K., V. V. Dudelev, W. Sibbett, Rafailov, E. U., Dudelev, V. V., Melissinaki, V., Deryagin, A.G., V. V. Dudeleva, Sobolev, K. K., K. K. Soboleva, V. Melissinaki, Kuchinskii, V.I., A. G. Deryagin, V. I. Kuchinskiia, Rafailov, E.U., G. S. Sokolovskii, Losev, S.N., A. G. Deryagina, V. I. Kuchinskii, M. Farsari, K. K. Sobolevac, Sokolovskii, G.S., V. Melissinakib, W. Sibbette, G. S. Sokolovskiia, Sokolovskii, G. S., Dudelev, V.V., E. U. Rafailov, Farsari, M., Losev, S. N., Sibbett, W., E. U. Rafailovf, S. N. Losev   +36 more
core   +1 more source

EXIT Chart Based Joint Code-Rate and Spreading-Factor Optimisation of Single-Carrier Interleave Division Multiple Access [PDF]

, 2007
—In this paper, we consider the joint code-rate and spreading-factor optimisation of turbo-style iterative joint detection and decoding assisted single-carrier interleave division multiple access (SC-IDMA) systems using different-rate convolutional codes
Zhang, R, Hanzo, L.
core   +2 more sources

High-power free-electron laser amplifier using a scalloped electron beam and a two-stage wiggler

Physical Review Special Topics. Accelerators and Beams, 2006
High-power free-electron laser (FEL) amplifiers present many practical design and construction problems. One such problem is possible damage to any optical beam control elements beyond the wiggler.
D. C. Nguyen, H. P. Freund, W. Colson
doaj   +1 more source

Design and Analysis of Commercially Viable Free-Space Optical Communication Link for Diverse Beam Divergence Profiles

Frontiers in Physics, 2021
With an exponential increase in the use of smart devices and with increasing demand for high-speed data applications, the Radio Frequency and Microwave links will find themselves almost incapable of meeting this deficit.
Harjeevan Singh, Rajan Miglani, Nitin Mittal, Gurjot Singh Gaba, Mehedi Masud, Sultan Aljahdali   +5 more
doaj   +1 more source

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

FEBS 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, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

Joint time and beam domain non-orthogonal multiple access

Tongxin xuebao, 2021
In order to improve the system’s ability to accommodate connected devices, a joint time and beam domain non-orthogonal multiple access (NOMA) scheme was proposed, which was suitable for millimeter wave massive multiple-input multiple-output (MIMO ...
Zhaoyang ZHANG, Jiajia WU, Jue WANG, Chu ZHOU   +3 more
doaj   +2 more sources