Results 111 to 120 of about 2,902,077 (302)

Soil Inorganic Electron Acceptors and Carbon Substrates Hierarchically Govern Wetland Methanogenesis Temperature Response

open access: yesAdvanced Science, EarlyView.
ABSTRACT Wetlands constitute Earth's largest natural methane (CH4) source, yet projections of their climate feedback remain uncertain due to poorly constrained temperature sensitivity (Q10‐CH4) of microbial methanogenesis. While water table dynamics have been demonstrated to regulate wetland methanogenesis by altering key soil conditions such as ...
Shuying Qiu   +6 more
wiley   +1 more source

Density conditions in Fréchet and (DF)-spaces

open access: yesRevista Matemática Complutense, 1989
Summary: We survey our main results on the density condition for Fréchet spaces and on the dual density conditions for (DF)-spaces as well as some recent developments. At the end of section 1., we include a new result on the projective tensor product of two Fréchet spaces.
Bierstedt, Klaus Dieter, Bonet, José
openaire   +3 more sources

Distribution Dynamics of Food Price Inflation Rates in EU: An Alternative Conditional Density Estimator Approach [PDF]

open access: yes
Concepts and developments in the literature of economic growth and convergence have recently been adopted and used in the study of inflation rate convergence.
Angelos Liontakis, Christos T. Papadas
core  

Thymosin Alpha‐1 Provides Direct Neuroprotection by Engaging the Orexin Receptor HCRTR1 to Suppress Neuronal Necroptosis

open access: yesAdvanced Science, EarlyView.
In this study, we unveil a thymus‐brain endocrine axis wherein Tα1 engages HCRTR1 to inhibit RIPK3‐mediated necroptosis. This study nominates the Tal‐HCRTR1‐RIPK3 axis as a potent and clinically translatable therapeutic target for stroke and neurodegeneration.
Xinmei Kang   +11 more
wiley   +1 more source

Global and Regional Sources of Risk in Equity Markets: Evidence from Factor Models with Time-Varying Conditional Skewness [PDF]

open access: yes
This study examines the influence of global and regional factors on the conditional distribution of stock returns from six Asian markets, using factor models in which unexpected returns comprise global, regional and local shocks.
Aamir R. Hashmi, Anthony S. Tay
core   +2 more sources

A density condition for interpolation on the Heisenberg group

open access: yesRocky Mountain Journal of Mathematics, 2012
Let $N$ be the Heisenberg group. We consider left-invariant multiplicity free subspaces of $L^2(N)$. We prove a necessary and sufficient density condition in order that such subspaces possess the interpolation property with respect to a class of discrete subsets of $N$ that includes the integer lattice.
Currey, Bradley, Mayeli, Azita
openaire   +4 more sources

Nonparametric Density Estimation for Positive Time Series [PDF]

open access: yes
The Gaussian kernel density estimator is known to have substantial problems for bounded random variables with high density at the boundaries. For i.i.d. data several solutions have been put forward to solve this boundary problem. In this paper we propose
Jeroen V.K. Rombouts, Taoufik Bouezmarni
core  

Engineering Approaches to Modify Immunomodulatory Functions of Mesenchymal Stromal Cells (MSCs): Tissue Regeneration and Clinical Application

open access: yesAdvanced Science, EarlyView.
Mesenchymal stromal cells (MSCs) show promise for treating immune‐related disorders through immunomodulation and tissue regeneration. This review gives a brief overview of current clinical approval of MSC therapies. It also discussed how bioengineering, including genetic modification, biomaterial delivery, extracellular vesicles, and iPSC‐derived MSCs,
Sichen Yang   +6 more
wiley   +1 more source

Restricted Gompertz-Type Diffusion Processes with Periodic Regulation Functions

open access: yesMathematics, 2019
We consider two different time-inhomogeneous diffusion processes useful to model the evolution of a population in a random environment. The first is a Gompertz-type diffusion process with time-dependent growth intensity, carrying capacity and noise ...
Virginia Giorno, Amelia G. Nobile
doaj   +1 more source

Nonparametric Kernel Testing in Semiparametric Autoregressive Conditional Duration Model [PDF]

open access: yes
A crucially important advantage of the semiparametric regression approach to the nonlinear autoregressive conditional duration (ACD) model developed in Wongsaart et al. (2011), i.e.
Jiti Gao, Pipat Wongsaart
core  

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