Results 101 to 110 of about 1,354,784 (303)

Silicon-on-Nitride Waveguide With Ultralow Dispersion Over an Octave-Spanning Mid-Infrared Wavelength Range

open access: yesIEEE Photonics Journal, 2012
The proposed silicon-on-nitride (SON) waveguide exhibits an ultrabroadband (4200 nm), low chromatic dispersion in the mid-infrared (MIR) wavelength region from 2430 to 6630 nm. It has two zero-dispersion wavelengths within the span.
Yang Yue   +4 more
doaj   +1 more source

On the Theory of Wave Packets

open access: yes, 2013
In this paper we discuss some aspects of the theory of wave packets. We consider a popular non-covariant Gaussian model used in various applications and show that it predicts too slow a longitudinal dispersion rate for relativistic particles.
Naumov, D. V.
core   +1 more source

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada   +6 more
wiley   +1 more source

Everyone's A Winner? Union Effects on Persistence in Private Sector Wage Settlements: Longitudinal Evidence from Britain [PDF]

open access: yes
Against a background of increased decentralisation in the structure of wage decision making, we analyse the effects of unions on the dispersion and persistence of pay settlements over the medium term using a longitudinal data set covering British private
Donna Brown   +2 more
core  

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

The Pecularities of Fine Particles Dispersion Over the Roadside

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2007
On the ground of physical model mathematical distribution was written down for determining the pollutant dispersion peculiarities in the freeway. The correlation of Lithuanian and foreign studies of ultrafine particles and transitionmetal measurements ...
Evelina Brannvall   +1 more
doaj  

Compact orthogonal-dispersion device using a prism and a transmission grating

open access: yesJournal of the European Optical Society-Rapid Publications, 2018
Background Spectroscopy was one of the main applications of gratings. Most spectrometers today are based on reflection grating designs, since high quality transmission grating technologies have only matured over the last several years. Conventional cross-
Qinghua Yang, Weiqiang Wang
doaj   +1 more source

Tunable coupled-mode dispersion compensation and its application to on-chip resonant four-wave mixing

open access: yes, 2014
We propose and demonstrate localized mode coupling as a viable dispersion engineering technique for phase-matched resonant four-wave mixing (FWM). We demonstrate a dual-cavity resonant structure that employs coupling-induced frequency splitting at one of
Gentry, Cale M.   +2 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Hidden solitons in the Zabusky-Kruskal experiment: Analysis using the periodic, inverse scattering transform

open access: yes, 2010
Recent numerical work on the Zabusky--Kruskal experiment has revealed, amongst other things, the existence of hidden solitons in the wave profile. Here, using Osborne's nonlinear Fourier analysis, which is based on the periodic, inverse scattering ...
Ablowitz   +36 more
core   +1 more source

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