Results 141 to 150 of about 54,500 (246)

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

EØS-retten og hjemfallsretten

Magma, 2006
Finn Arnesen
doaj   +1 more source

Action Mechanism of Essential Oils or Their Components Against Pathogenic Bacteria: Literature Review. [PDF]

Int J Microbiol
El-Sakhawy MA, El Raheim Mohammed Donia A, Juraybi TN, El-Sherbiny Ateya AA, Osman W, Abd-Elghany AA, Soliman MM, Kobisi ANA, Balah MA.   +8 more
europepmc   +1 more source

Optical‐to‐Microcomb Stability Transfer for Ultrastable Timing and Microwave/Millimeter‐Wave Generation

Laser &Photonics Reviews, EarlyView.
This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn, Junyong Choi, Daewon Suk, Hansuek Lee, Jungwon Kim   +4 more
wiley   +1 more source

Utstasjonering av arbeidstakere - Forholdet til EØS-avtalen [PDF]

, 2007
Fodnes, Anne Helene
core  

Giant Phonon‐Enhanced Terahertz Electro‐Optic Response in Ferroelectric van der Waals NbOX2 (X = Br, I)

Laser &Photonics Reviews, EarlyView.
Van der Waals ferroelectric NbOX2 thin films exhibit phonon‐resonance enhanced electro‐optic responses, 332 pm/V at 3.1 THz (NbOI2) and 192 pm/V at 3.7 THz (NbOBr2), the highest among vdW materials, and show 4% non‐resonant SHG modulation together with resonant phonon‐enhancement under a 150 kV/cm THz pump.
Baolong Zhang, Ruihuan Duan, Zheng Liu, Ranjan Singh   +3 more
wiley   +1 more source

Prevalence and risk factors for neonatal sepsis among very preterm infants in China: a systematic review and meta-analysis. [PDF]

Front Pediatr
Li Y, Guo X, Zhou K, Feng J, Rao D, Du G, Yu Z, Zheng H.   +7 more
europepmc   +1 more source

Ruteutviklingsfond : definisjon, regler og erfaringer [PDF]

, 2007
Hanssen, Thor-Erik Sandberg
core  

Static and Dynamic Analysis of Porous Gas Bearings Lubricated With Air, Refrigerant R‐134a, Helium and Hydrogen

Lubrication Science, EarlyView.
ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley   +1 more source

Effects of essential oils on foulbrood bacteria and honey bee workers (<i>Apis mellifera</i>) under laboratory conditions. [PDF]

Front Insect Sci
Marianelli C, Narciso L.
europepmc   +1 more source