Results 31 to 40 of about 3,143,049 (329)
The Spectroscopy of Nitrogenases [PDF]
Chemical Reviews, 2020 Nitrogenases are responsible for biological nitrogen fixation, a crucial step in the biogeochemical nitrogen cycle. These enzymes utilize a two-component protein system and a series of iron-sulfur clusters to perform this reaction, culminating at the FeMco active site (M = Mo, V, Fe), which is capable of binding and reducing N2 to 2NH3. In this review,
Casey Van Stappen +6 more
openaire +3 more sources
Near-infrared spectroscopy after high-risk congenital heart surgery in the paediatric intensive care unit [PDF]
, 2011 Objective: To establish whether the use of near-infrared spectroscopy is potentially beneficial in high-risk cardiac infants in United Kingdom paediatric intensive care units. Design: A prospective observational pilot study.
Hovarth +5 more
core +1 more source
Fusion Science and Technology, 2004 A brief introduction into the spectroscopy of fusion plasmas is presented. Basic principles of the emission of ionic, atomic and molecular radiation will be explained and a survey of the effects, which lead to the population of the respective excited levels, will be given.
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Focus image scanning microscopy for sharp and gentle super-resolved microscopy
Nature Communications, 2022 Super-resolution microscopy techniques can be challenging for live cells and thick samples. Here, the authors propose a method to reduce beam intensity and remove out-of-focus fluorescence background in image-scanning microscopy (ISM) and its combination
Giorgio Tortarolo +9 more
doaj +1 more source
Single-shot imaging of surface molecular ionization in nanosystems
Nanophotonics, 2021 Using single-shot velocity map imaging technique, explosion imaging of different ion species ejected from 50 nm SiO2 nanoparticles are obtained excitedly by strong near-infrared and ultraviolet femtosecond laser fields.
Sun Fenghao +10 more
doaj +1 more source
, 2005 We do meson spectroscopy by studying the behavior of S-matrix poles in the complex-energy plane, as a function of the coupling strength for triplet-P-zero quark-pair creation.
Kleefeld, Frieder +2 more
core +1 more source
Laser & Photonics Reviews, 2021 AbstractAll spectrometers rely on some mechanism to achieve spectral selectivity; common examples include gratings, prisms, and interferometers with moving mirrors. A spectroscopic technique—here dubbed Planck spectroscopy—that measures the spectral emissivity of a surface using only a temperature‐controlled stage and a detector, without any wavelength‐
Yuzhe Xiao +6 more
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Unified picture of vibrational relaxation of OH stretch at the air/water interface
Nature CommunicationsThe elucidation of the energy dissipation process is crucial for understanding various phenomena occurring in nature. Yet, the vibrational relaxation and its timescale at the water interface, where the hydrogen-bonding network is truncated, are not well ...
Woongmo Sung +3 more
doaj +1 more source
FEBS Letters, EarlyView.Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke +2 more
wiley +1 more source