scholarly journals k-resolved susceptibility function of 2H-TaSe2from angle-resolved photoemission

2013 ◽  
Vol 88 (3) ◽  
Author(s):  
J. Laverock ◽  
D. Newby ◽  
E. Abreu ◽  
R. Averitt ◽  
K. E. Smith ◽  
...  
Keyword(s):  
Susceptibility Function

scholarly journals Sensitivity to deliberate sea salt seeding of marine clouds – observations and model simulations

2011 ◽  
Vol 11 (10) ◽  
pp. 29527-29559 ◽  
Author(s):  
K. Alterskjær ◽  
J. E. Kristjánsson ◽  
Ø. Seland
Keyword(s):  
Cloud Droplet ◽  
Sea Salt ◽  
Maximum Effect ◽  
Cloud Droplets ◽  
Cloud Optical Depth ◽  
Susceptibility Function ◽  
Cloud Properties ◽  
The Pacific ◽  
Moderate Resolution Imaging Spectroradiometer ◽  
Modal Radius

Abstract. Sea salt seeding of marine clouds to increase their albedo is a proposed technique to counteract or slow global warming. In this study, we first investigate the susceptibility of marine clouds to sea salt injections, using observational data of cloud droplet number concentration, cloud optical depth, and liquid cloud fraction from the MODIS (Moderate Resolution Imaging Spectroradiometer) instruments on board the Aqua and Terra satellites. We then compare the derived susceptibility function to a corresponding estimate from the Norwegian Earth System Model (NorESM). Results compare well between simulations and observations, showing that stratocumulus regions off the west coast of the major continents along with large regions in the Pacific and the Indian Oceans are susceptible. We then carry out geo-engineering experiments with a uniform increase of 10−9 kg m−2 s−1 in emissions of sea salt particles with a modal radius of 0.13 μm. The increased sea salt concentrations and the resulting change in marine cloud properties lead to a globally averaged forcing of −4.8 W m−2 at the top of the atmosphere, more than cancelling a doubling of CO2 concentrations. The forcing is large in areas found to be sensitive by using the susceptibility function, confirming its usefulness as an indicator of where to inject sea salt for maximum effect. Results also show that the effectiveness of sea salt seeding is reduced because the injected sea salt provide a large surface area for water vapor and gaseous sulphuric acid to condense on, thereby lowering the maximum supersaturation and suppressing the formation and lifetime of sulphate particles. In some areas, our simulations show an overall reduction in the CCN concentration and the number of activated cloud droplets decreases, resulting in a positive globally averaged forcing.

A model calculation of susceptibility function of paramagnetic nickel

Physica ◽  
1974 ◽  
Vol 78 (2) ◽  
pp. 273-290 ◽  
Author(s):  
Satya Prakash ◽  
Natthi Singh
Keyword(s):  
Model Calculation ◽  
Susceptibility Function

Wave-Number-Dependent Susceptibility Function for Paramagnetic Chromium

1971 ◽  
Vol 3 (8) ◽  
pp. 2401-2411 ◽  
Author(s):  
R. P. Gupta ◽  
S. K. Sinha
Keyword(s):  
Wave Number ◽  
Susceptibility Function

scholarly journals On the fractional susceptibility function of piecewise expanding maps

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Magnus Aspenberg ◽  
Viviane Baladi ◽  
Juho Leppänen ◽  
Tomas Persson
Keyword(s):  
Probability Measure ◽  
Fractional Derivative ◽  
Invariant Probability Measure ◽  
Holomorphic Extension ◽  
Expanding Maps ◽  
Absolutely Continuous ◽  
Unimodal Map ◽  
Susceptibility Function ◽  
Absolutely Continuous Invariant ◽  
Piecewise Expanding Maps

<p style='text-indent:20px;'>We associate to a perturbation <inline-formula><tex-math id="M1">\begin{document}$ (f_t) $\end{document}</tex-math></inline-formula> of a (stably mixing) piecewise expanding unimodal map <inline-formula><tex-math id="M2">\begin{document}$ f_0 $\end{document}</tex-math></inline-formula> a two-variable fractional susceptibility function <inline-formula><tex-math id="M3">\begin{document}$ \Psi_\phi(\eta, z) $\end{document}</tex-math></inline-formula>, depending also on a bounded observable <inline-formula><tex-math id="M4">\begin{document}$ \phi $\end{document}</tex-math></inline-formula>. For fixed <inline-formula><tex-math id="M5">\begin{document}$ \eta \in (0,1) $\end{document}</tex-math></inline-formula>, we show that the function <inline-formula><tex-math id="M6">\begin{document}$ \Psi_\phi(\eta, z) $\end{document}</tex-math></inline-formula> is holomorphic in a disc <inline-formula><tex-math id="M7">\begin{document}$ D_\eta\subset \mathbb{C} $\end{document}</tex-math></inline-formula> centered at zero of radius <inline-formula><tex-math id="M8">\begin{document}$ &gt;1 $\end{document}</tex-math></inline-formula>, and that <inline-formula><tex-math id="M9">\begin{document}$ \Psi_\phi(\eta, 1) $\end{document}</tex-math></inline-formula> is the Marchaud fractional derivative of order <inline-formula><tex-math id="M10">\begin{document}$ \eta $\end{document}</tex-math></inline-formula> of the function <inline-formula><tex-math id="M11">\begin{document}$ t\mapsto \mathcal{R}_\phi(t): = \int \phi(x)\, d\mu_t $\end{document}</tex-math></inline-formula>, at <inline-formula><tex-math id="M12">\begin{document}$ t = 0 $\end{document}</tex-math></inline-formula>, where <inline-formula><tex-math id="M13">\begin{document}$ \mu_t $\end{document}</tex-math></inline-formula> is the unique absolutely continuous invariant probability measure of <inline-formula><tex-math id="M14">\begin{document}$ f_t $\end{document}</tex-math></inline-formula>. In addition, we show that <inline-formula><tex-math id="M15">\begin{document}$ \Psi_\phi(\eta, z) $\end{document}</tex-math></inline-formula> admits a holomorphic extension to the domain <inline-formula><tex-math id="M16">\begin{document}$ \{\, (\eta, z) \in \mathbb{C}^2\mid 0&lt;\Re \eta &lt;1, \, z \in D_\eta \,\} $\end{document}</tex-math></inline-formula>. Finally, if the perturbation <inline-formula><tex-math id="M17">\begin{document}$ (f_t) $\end{document}</tex-math></inline-formula> is horizontal, we prove that <inline-formula><tex-math id="M18">\begin{document}$ \lim_{\eta \in (0,1), \eta \to 1}\Psi_\phi(\eta, 1) = \partial_t \mathcal{R}_\phi(t)|_{t = 0} $\end{document}</tex-math></inline-formula>.</p>

scholarly journals Barley RIC157 is involved in RACB-mediated susceptibility to powdery mildew

2019 ◽  
Author(s):  
Stefan Engelhardt ◽  
Michaela Kopischke ◽  
Johanna Hofer ◽  
Katja Probst ◽  
Christopher McCollum ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Fungal Infection ◽  
G Protein ◽  
Blumeria Graminis ◽  
Epidermal Cells ◽  
Scaffold Proteins ◽  
Cell Periphery ◽  
Dependent Manner ◽  
Susceptibility Function

AbstractSuccessful pathogens often benefit from certain cellular host processes. For the biotrophic ascomycete fungus Blumeria graminis f.sp. hordei (Bgh) it has been shown that barley RACB, a small monomeric G-protein (ROP, RHO of plants), is required for full susceptibility to fungal penetration. The susceptibility function of RACB probably lies in its role in cell polarisation, which may be co-opted by the pathogen for invasive ingrowth of its haustorium. However, the actual mechnism of how RACB supports the fungal penetration success is little understood. RIC proteins are considered scaffold proteins which can interact directly with ROPs via a conserved CRIB motif. Here we describe a yet uncharacterised RIC protein, RIC157, which can interact directly with RACB. We could show that RIC157 undergoes a recruitment from the cytoplasm to the cell periphery in the presence of activated RACB. During fungal infection, RIC157 and activated RACB colocalise at the penetration site, particularly at the haustorial neck. In a RACB-dependent manner, transiently overexpressed RIC157 renders barley epidermal cells more susceptible to fungal penetration. We conclude that RIC157 promotes fungal penetration into barley epidermal cells via its function as downstream executor in RACB-signaling.

scholarly journals Analyticity of the susceptibility function for unimodal Markovian maps of the interval

Nonlinearity ◽  
2005 ◽  
Vol 18 (6) ◽  
pp. 2447-2453 ◽  
Author(s):  
Yunping Jiang ◽  
David Ruelle
Keyword(s):  
Susceptibility Function
Sign in / Sign up

Export Citation Format

Share Document