Results 41 to 50 of about 706,746 (353)

Loading of a cold atomic beam into a magnetic guide

, 2002
We demonstrate experimentally the continuous and pulsed loading of a slow and cold atomic beam into a magnetic guide. The slow beam is produced using a vapor loaded laser trap, which ensures two-dimensional magneto-optical trapping, as well as cooling by
Aclan, A., Cren, P., Dalibard, J., Guéry-Odelin, D., Roos, C. F.   +4 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

Moment Redistribution in UHPC Continuous Beams Reinforced with High-Strength Steel Bars: Numerical Investigation and Prediction Model

Buildings
Considering moment redistribution in the design of ultra-high-performance concrete (UHPC) statically indeterminate structures can fully exploit the load-bearing potential of members, simplify reinforcement details, and save construction costs. Due to the
Ling Li, Bei Li, Wenzhong Zheng
doaj   +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

Low-background prebunching system for heavy-ion beams at the Tokai radioactive ion accelerator complex

Physical Review Special Topics. Accelerators and Beams, 2012
A novel beam-bunching technique has been implemented at a heavy-ion linear accelerator facility by installing a compact two-gap prebuncher and a multilayer beam chopper.
M. Okada, K. Niki, Y. Hirayama, N. Imai, H. Ishiyama, S. C. Jeong, I. Katayama, H. Miyatake, M. Oyaizu, Y. X. Watanabe, S. Arai, H. Makii, Y. Wakabayashi   +12 more
doaj   +1 more source

Regulation of electron bunch arrival time for a continuous-wave linac: Exploring the application of the H_{2} mixed-sensitivity problem

Physical Review Accelerators and Beams, 2023
Regulating the arrival time of electron bunches is a crucial step to improve the temporal resolution of accelerator-based pump-probe experiments. In this regard, an electron beam regulation method called beam-based feedback, has been shown to work well ...
Andrei Maalberg, Michael Kuntzsch, Klaus Zenker, Eduard Petlenkov   +3 more
doaj   +1 more source

Determining Cosserat constants of 2D cellular solids from beam models [PDF]

, 2017
We present results of a two-scale model of disordered cellular materials where we describe the microstructure in an idealized manner using a beam network model and then make a transition to a Cosserat-type continuum model describing the same material on ...
Liebenstein, Stefan, Zaiser, Michael
core   +3 more sources

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

Adaptive Quantum Measurements of a Continuously Varying Phase [PDF]

, 2001
We analyze the problem of quantum-limited estimation of a stochastically varying phase of a continuous beam (rather than a pulse) of the electromagnetic field.
A.S. Holevo, D. W. Berry, D.W. Berry, D.W. Berry, D.W. Berry, H. M. Wiseman, H.M. Wiseman, H.M. Wiseman, H.M. Wiseman, M.J. Collett   +9 more
core   +2 more sources

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