Results 51 to 60 of about 242,613 (344)

Solution of the Goursat Problem for a Fourth-Order Hyperbolic Equation with Singular Coefficients by the Method of Transmutation Operators

open access: yesMathematics, 2023
In this paper, the method of transmutation operators is used to construct an exact solution of the Goursat problem for a fourth-order hyperbolic equation with a singular Bessel operator.
Sergei M. Sitnik   +1 more
doaj   +1 more source

Boundaries of photosynthesis: adaptations of carbon fixation in extreme environments

open access: yesFEBS Open Bio, EarlyView.
Photosynthesis faces challenges from environmental extremes of temperature, pH, and salinity, limiting gas diffusion, modifying membrane fluidity, and destabilizing photochemical and biochemical reactions. Photosynthetic organisms have evolved unique adaptations overcoming these stresses and maintaining their photosynthetic activity.
Pere Aguiló‐Nicolau   +3 more
wiley   +1 more source

Duality of multi-parameter Triebel-Lizorkin spaces associated with the composition of two singular integral operators

open access: yes, 2016
In this paper, we study the duality theory of the multi-parameter Triebel-Lizorkin spaces Ḟ p (Rm) associated with the composition of two singular integral operators on Rm of different homogeneities.
Wei Ding, Guozhen Lu
semanticscholar   +1 more source

Multi-parameter singular integral operators and representation theorem [PDF]

open access: yes, 2014
We formulate a class of singular integral operators in arbitrarily many parameters using mixed type characterizing conditions. We also prove a multi-parameter representation theorem saying that a general operator in our class can be represented as an ...
Yumeng Ou
semanticscholar   +1 more source

Profiling the effect of low frequency mechanical vibration on the metabolic and oxidative stress responses of A431 carcinoma

open access: yesFEBS Open Bio, EarlyView.
20 Hz mechanical vibration induced A431 cancer cells' apoptosis without such effect on other healthy cell lines of L929 and C2C12. Lowered glucose consumption is observed specifically in A431. The expressions of ROS, HMGB1, and HSP1 levels initially increase and subsequently decrease in the cancer cell line, as opposed to L929 and C2C12, which ...
Wresti L. Anggayasti   +5 more
wiley   +1 more source

Weighted Endpoint Estimates for Commutators of Singular Integral Operators on Orlicz-Morrey Spaces

open access: yesJournal of Function Spaces, 2019
In this paper, we obtain the weighted endpoint estimates for the commutators of the singular integral operators with the BMO functions and the associated maximal operators on Orlicz-Morrey Spaces.
Jinyun Qi, Hongxia Shi, Wenming Li
doaj   +1 more source

On the spectral theory of singular integral operators [PDF]

open access: yesTransactions of the American Mathematical Society, 1963
A complete spectral representation is given for a class of singular integral operators. The influence of spectral multiplicity is partially taken into account. (T.F.H.)
openaire   +4 more sources

Matrix: a complex amalgam of structures and functions in tumor microenvironment

open access: yesFEBS Open Bio, EarlyView.
The matrix is a dynamic, intricate three‐dimensional mesh of biomolecules with both structural and functional properties. This review deals with the complexity of this ‘molecular amalgam’ in the tumor microenvironment and highlights its importance in the maintenance and evolution of tumors by describing certain matrix biomolecules, such as ...
Spyros S. Skandalis   +3 more
wiley   +1 more source

A boundary integral equation method for the fluid-solid interaction problem

open access: yesCommunications in Analysis and Mechanics, 2023
In this paper, a boundary integral equation method is proposed for the fluid-solid interaction scattering problem, and a high-precision numerical method is developed.
Yao Sun, Pan Wang, Xinru Lu , Bo Chen
doaj   +1 more source

Cones, rectifiability, and singular integral operators [PDF]

open access: yesRevista Matemática Iberoamericana, 2021
Let \mu be a Radon measure on \mathbb{R}^d . We define and study conical energies \mathcal{E}_{\mu,p}(x,V,\alpha) , which quantify the portion of \mu
openaire   +3 more sources

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