Results 161 to 170 of about 34,861 (267)

Transformation method of Φ-OTDR optical fiber strain and tunnel liner strain and its application in tunnel safety monitoring. [PDF]

Sci Rep
Cao K, Xie Z, Zhou F, Wang X, Tang J, Wang Z.   +5 more
europepmc   +1 more source

In Situ Acoustic Monitoring of Focused Femtosecond Pulse Duration in Air

Laser &Photonics Reviews, EarlyView.
Air‐breakdown acoustics at the laser focus is used to determine femtosecond pulse duration with a simple USB microphone. By chirp‐tuning and compressing 1030 nm pulses from 241 to 50 fs, the acoustic amplitude scales inversely proportional to the square root of the pulse duration, enabling in situ readout over 50 fs–5 ps—crucial for precise pulse ...
Indrė Meškėlaitė, Hsin‐Hui Huang, Haoran Mu, Nguyen Hoai An Le, Tomas Katkus, Edvinas Aleksandravičius, Gabrielius Kontenis, Domas Paipulas, Saulius Juodkazis, Darius Gailevičius   +9 more
wiley   +1 more source

Helium spin-echo as a surface-sensitive probe of vibrational energy dissipation.

Faraday Discuss
Tamtögl A, Ellis J, Allison W, Sabik A, Antczak G, Jardine AP.   +5 more
europepmc   +1 more source

Isotopic Fractionation and Masking Effects during Biotransformation of Chlorinated Ethanes. [PDF]

Environ Sci Technol
Phillips E, De Vera J, Kümmel S, Bulka O, Chen W, Edwards E, Nijenhuis I, Gehre M, Sherwood Lollar B.   +8 more
europepmc   +1 more source

Controlling the Center of Mass Motion of Levitated Particles Using Structured Wavefronts

Laser &Photonics Reviews, EarlyView.
Optically levitated particles have great potential for quantum‐enhanced sensing. Precise control of the trapping beam is crucial to improve the stability and confinement of these systems. Here, we study how structured wavefronts can be used to control the center‐of‐mass motion of levitated particles, enhancing trap stiffness and enabling stable ...
Shah Jee Rahman, Quimey Pears Stefano, Angel Cifuentes, Jason Francis, Iker Gómez‐Viloria, Ruben Pellicer‐Guridi, Miguel Varga, Gabriel Molina‐Terriza   +7 more
wiley   +1 more source

Near-surface structural imaging of Tehran uppermost crust for urban seismic hazard. [PDF]

Sci Rep
Motavalli-Anbaran SJ, Moradi A, Shirzad T, Kiani M, Naghavi M, Jaferpour G.   +5 more
europepmc   +1 more source

Shape Derivatives of the Eigenvalues of the de Rham Complex for Lipschitz Deformations and Variable Coefficients: Part II

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this second part of our series of papers, we develop an abstract framework suitable for de Rham complexes that depend on a parameter belonging to an arbitrary Banach space. Our primary focus is on spectral perturbation problems and the differentiability of eigenvalues with respect to perturbations of the involved parameters. As a byproduct,
Pier Domenico Lamberti, Dirk Pauly, Michele Zaccaron   +2 more
wiley   +1 more source

Circadian timing of the dystrophin associated complex across the brain and body. [PDF]

Fluids Barriers CNS
Morse I, Nedergaard M, Hablitz LM.
europepmc   +1 more source

On Order Restricted Inference in Multi‐Step Stage Life Testing for a General Family of Distributions

Naval Research Logistics (NRL), EarlyView.
ABSTRACT Recently, k$$ k $$‐step stage life testing (SLT) has been proposed by Laumen and Cramer (2021) as a natural extension of progressive censoring with fixed censoring times (PC‐FCT) as well as of simple step‐stress accelerated life testing (SSALT).
Erhard Cramer, Ayan Pal, Debashis Samanta   +2 more
wiley   +1 more source

Non-Linear Pressure Sensitivity of Standard Telecommunication Cables. [PDF]

Sensors (Basel)
Abushagur AAG, Mokhtar MR, Md Rodzi NS, Ibrahim SA, Subari KS, Mahmud Z, Abdul Rashid HA, Franzen A, Yusoff Z.   +8 more
europepmc   +1 more source