Results 101 to 110 of about 5,935,258 (364)

An extrapolated fixed-point optimization method for strongly convex smooth optimizations

AIMS Mathematics
In this work, we focused on minimizing a strongly convex smooth function over the common fixed-point constraints. We proposed an extrapolated fixed-point optimization method, which is a modified version of the extrapolated sequential constraint method ...
Duangdaw Rakjarungkiat, Nimit Nimana
doaj   +1 more source

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

FEBS 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

Approximately Quintic and Sextic Mappings Form -Divisible Groups into Ŝerstnev Probabilistic Banach Spaces: Fixed Point Method

, 2011
Using the fixed point method, we investigate the stability of the systems of quadratic-cubic and additive-quadratic-cubic functional equations with constant coefficients form r-divisible groups into Ŝerstnev probabilistic Banach spaces.
M. E. Gordji, Y. Cho, M. Ghaemi, H. Majani   +3 more
semanticscholar   +1 more source

RAD50 missense variants differentially affect the DNA damage response and mitotic progression

FEBS Letters, EarlyView.
RAD50 incorporates into the MRN complex and initiates the DNA damage response. Furthermore, RAD50 promotes mitotic progression. RAD50 missense variants capable of forming an MRN complex supported the DNA damage response and mitotic features to different extents in complementation experiments, indicating these functions are separable and might impact ...
Hanna Redeker, Swantje Kebel, Lea Völkening, Anna Vatselia, Louisa Weinhold, Girmay Asgedom, Axel Schambach, Detlev Schindler, Thilo Dörk, Kristine Bousset   +9 more
wiley   +1 more source

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

FEBS 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, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Newton-like methods for the computation of fixed points

Computers & Mathematics with Applications, 1984
This paper deals with iteration schemes of type \(y_ i=F(x_ i)\), \(x_{i+1}=x_ i-[I-F'(\gamma x_ i+(1-\gamma)y_ i)]^{-1}(x_ i- F(x_ i))\), \(i=0,1,2,..\). for a fixed point problem \(F(x)=x,F:\quad X\to X\) a contraction on a Banach space. \(\gamma =1\) corresponds to Newton's method, while \(\gamma =0\) corresponds to the method of Stirling.
openaire   +3 more sources

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

FEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz, Milagros Siebeck Caturelli, Lina S. Lehmann, Florian Kurth, Alexander G. Maier, Kai Matuschewski   +5 more
wiley   +1 more source

An extragradient-like approximation method for variational inequalities and fixed point problems

Fixed Point Theory and Applications, 2011
The purpose of this paper is to investigate the problem of finding a common element of the set of fixed points of an asymptotically strict pseudocontractive mapping in the intermediate sense and the set of solutions of a variational inequality problem ...
Wong Ngai-Ching, Yao Jen-Chih, Ansari Qamrul, Ceng Lu-Chuan   +3 more
doaj  

The secant method and fixed points of nonlinear operators

Monatshefte f�r Mathematik, 1988
The results in this paper answer the following question: given that a mapping has a fixed point, when is it true that the secant iterates produce a sequence of nearby points which converge to the fixed point? We assume only that the nonlinear operator has a Hölder continuous Fréchet-derivative at the fixed point.
openaire   +2 more sources

4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase in malaria parasites and enhances atovaquone efficacy

FEBS Letters, EarlyView.
Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer, Matheus Felipe Santos, Maurício Mazzine Filho, Gabriela Oliveira Castro, Agustín Hernández, Manoel Aparecido Peres, Alejandro Miguel Katzin, Marcell Crispim   +7 more
wiley   +1 more source