Results 31 to 40 of about 7,499 (174)

Range Shift and Climatic Refugia for Alpine Lichens Under Climate Change

open access: yesDiversity and Distributions, Volume 31, Issue 9, September 2025.
ABSTRACT Aim The mountain biodiversity is highly threatened by climate change, with many species facing habitat reduction and/or local extinction. Poikilohydric organisms like lichens are extremely sensitive to environmental conditions and changes. A comprehensive overview of the impact of climate change on the future distribution of lichens is still ...
Luana Francesconi   +11 more
wiley   +1 more source

Acousto-optical coherence tomography with a digital holographic detection scheme [PDF]

open access: yes, 2012
Acousto-optical coherence tomography (AOCT) consists in using random phase jumps on ultrasound and light to achieve a millimeter resolution when imaging thick scattering media. We combined this technique with heterodyne off-axis digital holography.
Benoit, Emilie   +4 more
core   +5 more sources

Fiber MOPA based tunable source for terahertz spectroscopy [PDF]

open access: yesLaser Physics Letters, 2011
We have developed a terahertz spectrometer based on difference frequency generation of beams from a fiber MOPA. We present some demonstration data on water vapor absorption lines.
Malinowski, A.   +10 more
openaire   +3 more sources

Ultrafast development of blue pigment for in situ laser digital coloration in the ceramic industry

open access: yesJournal of the American Ceramic Society, Volume 108, Issue 9, September 2025.
Integrated digital ceramic printing system with coupled laser. Abstract This study presents a fast and simple method for digital ceramic coloration using inkjet printing, eliminating the need for traditional precalcined pigments. This innovative approach represents a breakthrough in ceramic decoration technology, and introduces a previously unexplored ...
Abderrahim Lahlahi‐Attalhaoui   +6 more
wiley   +1 more source

ModE Regulates Alternative Nitrogenase Expression in the Methanogen Methanosarcina acetivorans

open access: yesMolecular Microbiology, Volume 124, Issue 2, Page 105-114, August 2025.
During nitrogen fixation, the methanogen Methanosarcina acetivorans produces the alternative vanadium‐nitrogenase and iron‐nitrogenase only when molybdenum is unavailable to support the activity of molybdenum‐nitrogenase. Our work demonstrates that the expression of the alternative nitrogenases in M.
Melissa Chanderban, Daniel J. Lessner
wiley   +1 more source

Two-photon-excited fluorescence (TPEF) and fluorescence lifetime imaging (FLIM) with sub-nanosecond pulses and a high analog bandwidth signal detection

open access: yes, 2017
Two-photon excited fluorescence (TPEF) microscopy and fluorescence lifetime imaging (FLIM) are powerful imaging techniques in bio-molecular science. The need for elaborate light sources for TPEF and speed limitations for FLIM, however, hinder an even ...
Eibl, Matthias   +4 more
core   +1 more source

Non‐iridescent yet angle‐dependent structural colors on titanium surfaces induced by laser oxidation

open access: yesNanophotonics, Volume 14, Issue 17, Page 2869-2879, August 2025.
Abstract Optically variable features are widely used in product design and anti‐counterfeiting. However, current industrial methods rely heavily on chemical inks, which pose environmental concerns and suffer from poor wear and corrosion resistance. We experimentally demonstrate the generation of non‐iridescent yet angle‐dependent structural colors on ...
XiaoSong Yu   +6 more
wiley   +1 more source

Fibre lasers: the new wave in material processing

open access: yes, 2005
In the last few years, fibre lasers have established themselves as the preferred laser source in many applications. The combination of small size, maintenance-free operation, thermal and electrical efficiency combined with outstanding (diffraction ...
Parker, David, Payne, David N.
core   +1 more source

High-energy, diode-pumped, nanosecond Yb:YAG MOPA system

open access: yesOptics Express, 2008
Diode-pumped nanosecond multi-pass laser amplification to the joule level using an Yb:YAG slab crystal has been demonstrated. A maximum output pulse energy of 2.9 J at an optical-to-optical efficiency of 10% has been achieved. The seed pulses with a pulse duration of 6.4 ns were generated in a Q-switched Yb:YAG laser and amplified up to a pulse energy ...
Siebold, M.   +5 more
openaire   +3 more sources

Mg Plating in Nonethereal Electrolyte Solutions: Fact or Misconception?

open access: yesChemSusChem, Volume 18, Issue 15, July 27, 2025.
An overview of Mg electrochemistry in both ethereal and nonethereal electrolyte systems was provided. Comprehensive reviewing on the electrochemical Mg plating/stripping activity reaffirms that only a limited range of solvents support reversible Mg plating/stripping.
Toshihiko Mandai
wiley   +1 more source

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