Results 21 to 30 of about 2,396,626 (307)
On loop celestial amplitudes for gauge theory and gravity [PDF]
Phys. Rev. D 102, 126020 (2020), 2020 Scattering amplitudes of massless particles in Minkowski space can be expressed in a conformal basis by Mellin transforming the momentum space amplitudes to correlation functions on the celestial sphere at null infinity. In this paper, we study celestial amplitudes of loop level gluons and gravitons.
arxiv +1 more source
A universal broadband and CEP stable seeder for high-power amplifiers [PDF]
EPJ Web of ConferencesThis work presents a universal seeder architecture based on filamentation and parametric amplification from an Ytterbium pump laser for the generation of pulses with versatile properties in terms of central wavelength, bandwidth, CEP, and contrast for ...
Maksimenka Raman +7 more
doaj +1 more source
Ожирение и метаболизм, 2022 BACKGROUND: With the development of visceral obesity, against the background of insulin resistance (IR), lipo- and glucose toxicity in tissues progresses, which disrupts the metabolic balance of the body, and is the main factor in the development of type
A. E. Yuzhakova +3 more
doaj +1 more source
Amplitude dependence of image quality in atomically-resolved bimodal atomic microscopy [PDF]
, 2016 In bimodal FM-AFM, two flexural modes are excited simultaneously. The total vertical oscillation deflection range of the tip is the sum of the peak-to-peak amplitudes of both flexural modes (sum amplitude).
Arai, Toyoko +5 more
core +2 more sources
Annales Henri Poincaré, 2017 In this work, we argue that the α′→0 limit of closed string theory scattering amplitudes is a tropical limit. The motivation is to develop a technology to systematize the extraction of Feynman graphs from string theory amplitudes at higher genus.
openaire +2 more sources
Evaluation of Visual Acuity of Ametropia with Visual Event-Related Potential Nogo-P3 Component
Fayixue Zazhi, 2022 ObjectiveTo analyze the Nogo-P3 component of event-related potential （ERP） in the process of visual acuity processing， to provide electrophysiological evidence for objective evaluation of visual acuity.MethodsTwenty-six subjects with no other ocular ...
JIA Fu-quan +5 more
doaj +1 more source
Effect of Umbilical Cord Ferritin Level on Auditory Brainstem Response Threshold in Newborns [PDF]
Iranian Journal of Otorhinolaryngology, 2020 Introduction: Iron plays an important role in myelination. Ferritin is a reliable indicator of the tissue iron store and umbilical cord ferritin level reflects the in utero iron stores.
Soumyajit Das +4 more
doaj +1 more source
Transcritical shallow-water flow past topography: finite-amplitude theory [PDF]
, 2009 We consider shallow-water flow past a broad bottom ridge, localized in the flow direction, using the framework of the forced SuGardner (SG) system of equations, with a primary focus on the transcritical regime when the Froude number of the oncoming flow ...
El, Gennady +2 more
core +2 more sources
Experimental demonstration of a temporal pulse shaping method based on nonlinear chirp [PDF]
EPJ Web of ConferencesWe present a general temporal shaping method based on spectral phase-only modulation for ultrafast laser sources. We explain the working principle of this technique and use it experimentally to generate a ramp-shaped pulse at the output of a laser source
Parize Gautier +5 more
doaj +1 more source
The clinical spectrum of SMA‐PME and in vitro normalization of its cellular ceramide profile
Annals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1941-1952, December 2022., 2022 Abstract Objective The objectives of this study were to define the clinical and biochemical spectrum of spinal muscular atrophy with progressive myoclonic epilepsy (SMA‐PME) and to determine if aberrant cellular ceramide accumulation could be normalized by enzyme replacement.
Michelle M. Lee +16 more
wiley +1 more source