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Ultrafast accelerator-based sources combined with synchronized femtosecond lasers are currently being developed. The method described here is intended as a jitter monitor at such facilities. We report on the possibility of extracting a time-offset signal between two different synchronized ultrashort light pulses. The method is based on sum-frequency generation in a nonlinear crystal. Aiming at ext

The goal of this study is to investigate the applicability of asymmetrical flow field-flow fractionation (AsFlFFF)–multi angle laser light scattering (MALLS), and to develop a method for analysis of cationic potato amylopectin (CPAP) having ultrahigh molecular mass (UHMr). Use of the aqueous carrier having low salt content (3 mM NaN3) resulted in a distortion in AsFlFFF fractograms of CPAP with a

The reactions in acidic aqueous solution between thiocyanate and each of the gold(II1) complexes Au(NH,)?+, rrans-Au- (NH,)zC12t, and rrans-A~(NH,)~Br~+ have been studied by use of potentiometric pH measurements and sequential-mixing stopped-flow spectrophotometry. The reactions give a common gold(1) product whereas the rate-controlling steps are different. The reaction between Au(NH,)?+ and thiocThe reactions in acidic aqueous solution between thiocyanate and each of the gold(III) complexes Au(NH3)43+, trans-Au(NH3)2C12+, and trans-Au(NH3)2Br2+ have been studied by use of potentiometric pH measurements and sequential-mixing stopped-flow spectrophotometry. The reactions give a common gold(I) product whereas the rate-controlling steps are different. The reaction between Au(NH3)43+ and thioc

Two sets of ribosome structures have recently led to two different interpretations of what limits the accuracy of codon translation by transfer RNAs. In this review, inspired by this intermezzo at the Ribosome Club, we briefly discuss accuracy amplification by energy driven proofreading and its implementation in genetic code translation. We further discuss general ways by which the monitoring base

Nyhetsbrev från Akademikerföreningen Sveriges Ingenjörer vid Siemens Energy AB Kontakt: asi.se@siemens-energy.com Redaktörer: JB, CH, MA Nr: 08 2024-12-09 Årsmöte 2024 Årsmötet ägde rum både fysiskt i konferensrummet Kraften i Finspång med 36 deltagare på plats och digitalt via Teams. Simon von Eckardstein valdes till mötesordförande, Julia Bahri till sekreterare och Rasmus Brand samt Johan Östrem

https://www.saco.se/globalassets/lokala-akademikerforeningar/privat/siemens-energy-ab/nyhetsbrev/asi-nyhetsbrev-0824.pdf - 2026-07-10

Synchrotron radiation sources have greatly contributed to the progress in many fields of science. The development of the storage ring technologies has made possible to obtain very low emittance electron beams, which together with the use of undulators allow guiding a very high photon flux into a very small spot required by the experiments. Development of the sources has been accompanied with equa

In this manuscript, we illustrate how to use the newly proposed τ re-clustering algorithm to select jets with different degrees of quenching without biasing their initial transverse momentum spectrum. Our study is based on Z+jet simulated events using the JEWEL Monte Carlo event generator to account for jet quenching effects. We apply the τ re-clustering algorithm to extract a proxy for a time axi

Artificial moral agents must not only be able to make competent ethical decisions, but they must do so effectively. This paper explores how ethical theory and algorithmic design impact computational efficiency by assessing the time cost of ethical algorithms. We create a model of an ethical environmentand conduct experiments on three different ethical algorithms in order to compare computational b

The study investigates the center of gravity in onset fricatives as a main acoustic feature to assess the relation between vowel pronunciation and coarticulatory spectral characteristics of the onset consonant. /s/- and /f/-initial CV sequences were analyzed with backness, roundedness and height of the vowel as predictors of fricative center of gravity. Results showed that the first 15 ms of an on

How truck drivers spend their time is crucial to the profitability of motor carriers. However, the aspect of time has been marginally addressed in industry practice and academic literature on motor-carrier strategies and operations. Given the importance of the drivers in transport operations, the purpose of this article is to outline how driver time in motor-carrier operations can be measured usin

The deletion-contraction algorithm is perhaps the most popular method for computing a host of fundamental graph invariants such as the chromatic, flow, and reliability polynomials in graph theory, the Jones polynomial of an alternating link in knot theory, and the partition functions of the models of Ising, Potts, and Fortuin-Kasteleyn in statistical physics. Prior to this work, deletion-contracti

Ultrafast processes in matter, such as the electron emission following light absorption, can now be studied using ultrashort light pulses of attosecond duration (10−18 s) in the extreme ultraviolet spectral range. The lack of spectral resolution due to the use of short light pulses has raised issues in the interpretation of the experimental results and the comparison with theoretical calculations.

The fast evolution of the QGP makes its interaction with jets an inherently time-dependent process. However, this crucial dimension is missing from traditional jet quenching measurements, which hence provide a mere average quantification of the medium properties. Jet substructure observables provide an effective strategy to access the QGP time structure. By identifying the recursive steps of a nov