Results 101 to 110 of about 3,588,956 (379)

Supergravity scattering amplitudes

open access: yesPhysical Review D, 2023
Supergravity theories with non-minimal Kähler potentials are characterized by a non-trivial field space manifold with corresponding non-trivial kinetic terms. The scattering amplitudes in these theories can be calculated at fixed background field values by making a field redefinition to Riemann normal coordinates.
Emilian Dudas   +3 more
openaire   +3 more sources

Functional parameters of spermatozoa obtained by a new selection device

open access: yesFEBS Open Bio, EarlyView.
This study compares density gradient centrifugation and the LensHooke CA0™ device for sperm separation. DGC requires multiple steps, specialized equipment, and technical expertise. In contrast, the CA0 device offers key practical and methodological advantages, resulting in a faster, simpler, and more affordable sperm selection method.
Julio C. Chávez   +8 more
wiley   +1 more source

Models of adaptation of the milking machines systems

open access: yesBIO Web of Conferences, 2018
Two systems of milking machines were considered - biotechnical and vacuum. Methodology for estimation of efficiency of the "machine-animal" biotechnical system was worked out. The dependences of the efficiency parameters of the technical system operation
Dmytriv Vasyl   +3 more
doaj   +1 more source

Functional Data Analysis of Amplitude and Phase Variation [PDF]

open access: yes, 2015
The abundance of functional observations in scientific endeavors has led to a significant development in tools for functional data analysis (FDA). This kind of data comes with several challenges: infinite-dimensionality of function spaces, observation ...
J. Marron   +3 more
semanticscholar   +1 more source

Geometry in scattering amplitudes

open access: yesPhysical Review D, 2022
We formulate the field-space geometry for an effective field theory of scalars and gauge bosons. Geometric invariants such as the field-space curvature enter in both scattering amplitudes and the renormalization group equations, with the scalar and gauge results unified in a single expression.
Andreas Helset   +2 more
openaire   +4 more sources

Blocking the voltage‐gated sodium channel hNav1.5 as a novel pH‐dependent mechanism of action for tamoxifen

open access: yesFEBS Open Bio, EarlyView.
Patch‐clamp recordings revealed that tamoxifen inhibits voltage‐gated sodium channels, especially under acidic conditions, both common in metastatic cancer cells. These effects may explain certain antitumor properties of tamoxifen, highlighting a novel mechanism of action beyond its known endocrine effects.
Karl Josef Föhr   +5 more
wiley   +1 more source

On the pion electroproduction amplitude

open access: yes, 2001
We analyze amplitudes for the pion electroproduction on proton derived from Lagrangians based on the local chiral SU(2) x SU(2) symmetries. We show that such amplitudes do contain information on the nucleon axial form factor F_A in both soft and hard ...
A. Liesenfeld   +33 more
core   +1 more source

Amplitude/Higgs Modes in Condensed Matter Physics [PDF]

open access: yes, 2014
The order parameter and its variations in space and time in many different states in condensed matter physics at low temperatures are described by the complex function Ψ(r, t).
D. Pekker, C. Varma
semanticscholar   +1 more source

Superpixel-based spatial amplitude and phase modulation using a digital micromirror device. [PDF]

open access: yesOptics Express, 2014
We present a superpixel method for full spatial phase and amplitude control of a light beam using a digital micromirror device (DMD) combined with a spatial filter.
S. A. Goorden, J. Bertolotti, A. Mosk
semanticscholar   +1 more source

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