Results 71 to 80 of about 9,489,153 (244)

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

High-Order Melnikov Method for Time-Periodic Equations

open access: yesAdvanced Nonlinear Studies, 2017
This paper discusses a high-order Melnikov method for periodically perturbed equations. We introduce a new method to compute Mk⁢(t0){M_{k}(t_{0})} for all k≥0{k\geq 0}, among which M0⁢(t0){M_{0}(t_{0})} is the traditional Melnikov function, and M1⁢(t0 ...
Chen Fengjuan, Wang Qiudong
doaj   +1 more source

High order periodic impulsive problems

open access: yesDynamical Systems and Differential Equations, AIMS Proceedings 2015 Proceedings of the 10th AIMS International Conference (Madrid, Spain), 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Minhós, Feliz, Fialho, J
openaire   +2 more sources

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Periodic solutions for second order Hamiltonian systems

open access: yesLe Matematiche, 2011
In this paper we present some recent multiplicity results for a class of second order Hamiltonian systems. Exploiting the variational structure of the problem, it will be shown how the existence of multiple, even infinitely many, periodic solutions can ...
Giuseppina D'Aguì, Roberto Livrea
doaj  

Periodic Quasiregular Mappings of Finite Order

open access: yesRevista Matemática Iberoamericana, 2003
The authors construct a periodic quasiregular function of any finite order \rho , 1\leq\rho < \infty . This completes earlier work of O. Martio and U. Srebro.
Drasin, David, Sastry, Swati
openaire   +3 more sources

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

open access: yesFEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux   +7 more
wiley   +1 more source

Resonant nonlinear periodic problems with the scalar p-Laplacian and a nonsmooth potential [PDF]

open access: yes, 2006
We study periodic problems driven by the scalar p-Laplacian with a nonsmooth potential. Using the nonsmooth critical point theory for locally Lipsctiz functions,we prove two existence theorems under conditions of resonance at infinity with respect to ...
Staicu, Vasile   +6 more
core  

Periodic Timetabling with Cyclic Order Constraints.

open access: yes, 2023
Periodic timetabling for highly utilized railway networks is a demanding challenge. We formulate an infrastructure-aware extension of the Periodic Event Scheduling Problem (PESP) by requiring that not only events, but also activities using the same infrastructure must be separated by a minimum headway time.
Enrico Bortoletto   +2 more
openaire   +3 more sources

Metastatic niche shaped by host factors influences disseminated cancer cell fate

open access: yesFEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward   +2 more
wiley   +1 more source

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