Results 21 to 30 of about 718 (237)

Calculation of the Vacuum Energy Density Using Zeta Function Regularization

open access: yesPhysical Sciences Forum, 2023
This paper presents a theoretical calculation of the vacuum energy density by summing the contributions of all quantum fields’ vacuum states, which turns out to indicate that there seems to be a missing bosonic contribution in order to match the ...
Siamak Tafazoli
doaj   +1 more source

On oscillatory behavior of two-dimensional time scale systems

open access: yesAdvances in Difference Equations, 2018
This paper deals with long-time behaviors of nonoscillatory solutions of a system of first-order dynamic equations on time scales. Some well-known fixed point theorems and double improper integrals are used to prove the main results.
Özkan Öztürk
doaj   +1 more source

Improper Integral [PDF]

open access: yes, 2009
Full text available.
Antonio Boccuto   +2 more
openaire   +1 more source

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

open access: yesMolecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra   +10 more
wiley   +1 more source

On |C,1|k Integrability of Improper Integrals

open access: yesInternational Journal of Analysis and Applications, 2016
In this paper, we introduce the concept of | C,1 |k,k ≥ 1, integrability of improper integrals and we prove a known theorem of Mazhar [3] by using this definition.
H. N. Özgen
doaj   +2 more sources

On Fuzzy Improper Integral and Its Application for Fuzzy Partial Differential Equations

open access: yesInternational Journal of Differential Equations, 2016
We establish some important results about improper fuzzy Riemann integrals; we prove some properties of fuzzy Laplace transforms, which we apply for solving some fuzzy linear partial differential equations of first order, under generalized Hukuhara ...
ElHassan ElJaoui, Said Melliani
doaj   +1 more source

Cauchy Principal Value Contour Integral with Applications

open access: yesEntropy, 2017
Cauchy principal value is a standard method applied in mathematical applications by which an improper, and possibly divergent, integral is measured in a balanced way around singularities or at infinity.
Matilde Legua, Luis M. Sánchez-Ruiz
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Localizability of charge and current distributions in the regime of electromagnetostatics and the mathematical proofs of Coulomb and Biot-Savart laws [PDF]

open access: yesRevista Brasileira de Ensino de Física
We investigate the problem of those conditions that, once imposed on the spatial localization of electric charge and current distributions, become sufficient for Coulomb and Biot-Savart laws to provide well-defined and unique representations for the ...
Antony M.M. Polito
doaj   +1 more source

PBF‐LB/M of Ti‐6Al‐4V: High‐Pressure Solution Treatment and Aging for Applications in a Sustainable Aerospace

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann   +4 more
wiley   +1 more source

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