Results 41 to 50 of about 86,067 (310)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Singular Perturbation Theory for PWM AC/DC Converters: Cascade Nonlinear Control Design and Stability Analysis

open access: yesIranian Journal of Electrical and Electronic Engineering, 2022
In this paper, the problem of controlling PWM single-phase AC/DC converters is addressed. The control objectives are twofold: (i) regulating the output voltage to a selected reference value, and (ii) ensuring a unitary power factor by forcing the grid ...
Y. Mchaouar   +7 more
doaj  

An approach to Atanassov's interval-valued intuitionistic fuzzy multi-attribute decision making based on prospect theory [PDF]

open access: yesInternational Journal of Computational Intelligence Systems, 2015
Prospect theory is a very effective method to express behavioral decision making under uncertainty. This paper attempts to develop a method to multi-attribute decision making with Atanassov's interval-valued intuitionistic fuzzy information using ...
Fanyong Meng   +2 more
doaj   +1 more source

Averages of characteristic polynomials in random matrix theory [PDF]

open access: yesCommunications on Pure and Applied Mathematics, 2005
We compute averages of products and ratios of characteristic polynomials associated with Orthogonal, Unitary, and Symplectic Ensembles of Random Matrix Theory. The pfaffian/determinantal formulas for these averages are obtained, and the bulk scaling asymptotic limits are found for ensembles with Gaussian weights.
Borodin, A., Strahov, E.
openaire   +4 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

New Operators for Aggregating Intuitionistic Fuzzy Information With Their Application in Decision Making

open access: yesIEEE Access, 2018
Aggregation of intuitionistic fuzzy information is a hot topic in Atanassov's intuitionistic fuzzy set theory, which has attracted much interest from researchers in recent years. In this paper, a series of new aggregation operators and weighted averaging
Cheng-Li Fan   +4 more
doaj   +1 more source

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

open access: yesFEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino   +7 more
wiley   +1 more source

Limit cycles for fourth-order autonomous differential equations

open access: yesElectronic Journal of Differential Equations, 2012
We provide sufficient conditions for the existence of periodic solutions of the fourth-order differential equation $$ ddddot x -(lambda+mu) dddot x +(1+lambda mu)ddot x -(lambda+mu)dot x+lambda mu x = varepsilon F(x, dot x, ddot x, dddot x ...
Jaume Llibre, Amar Makhlouf
doaj  

Addendum to Higher order stroboscopic averaged functions: a general relationship with Melnikov functions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
This addendum presents a relevant stronger consequence of the main theorem of the paper “Higher order stroboscopic averaged functions: a general relationship with Melnikov functions”, Electron. J. Qual. Theory Differ. Equ. 2021, No. 77.
Douglas Novaes
doaj   +1 more source

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