Results 81 to 90 of about 3,335,513 (267)

Chaotic Dynamics and Control of Discrete Ratio-Dependent Predator-Prey System

open access: yesDiscrete Dynamics in Nature and Society, 2017
This study examines the complexity of a discrete-time predator-prey system with ratio-dependent functional response. We establish algebraically the conditions for existence of fixed points and their stability.
Sarker Md. Sohel Rana
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

open access: yesFEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa   +3 more
wiley   +1 more source

Optical-OFDM VLC System: Peak-to-Average Power Ratio Enhancement and Performance Evaluation

open access: yesSensors
Visible Light Communication (VLC) systems are favoured for numerous applications due to their extensive bandwidth and resilience to electromagnetic interference.
Yasser A. Zenhom   +3 more
doaj   +1 more source

Stable Carbon Isotope Ratio (δ13C) Measurement of Graphite Using EA-IRMS System

open access: yesMedžiagotyra, 2015
δ13C values in non-irradiated natural graphite were measured. The measurements were carried out using an elemental analyzer combined with stable isotope ratio mass spectrometer (EA-IRMS). The samples were prepared with ground and non-ground graphite, the
Andrius Garbaras   +2 more
doaj   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Optimization Design of Pure Electric Vehicle Power System Speed Ratio

open access: yesJixie chuandong, 2019
Comprehensive consideration of the dynamic performance, driving range and energy consumption requirements of pure electric vehicles, on the basis of a fixed speed ratio pure electric vehicle as the research sample, in order to make the driving motor work
Jintang Zheng, Jiqing Chen
doaj  

Sex Ratio and the ABO Blood Group System [PDF]

open access: yesJournal of Epidemiology & Community Health, 1954
An interesting association between the sex ratio at birth and the ABO blood group system has been demonstrated by Sanghvi (1951). He showed, in each of two population samples, one from New York and the other from Bombay, that the sex ratio (percentage of males) of Group O infants of Group O mothers was significantly higher than that of Group A infants ...
openaire   +2 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Harmless delays in a discrete ratio-dependent periodic predator-prey system

open access: yesDiscrete Dynamics in Nature and Society, 2006
Verifiable criteria are established for the existence of positive periodic solutions and permanence of a delayed discrete periodic predator-prey model with Holling-type II functional response N1(k+1)=N1(k)exp⁡{b1(k)−a1(k)N1(k−[τ1])−α1(k)N2(k)/(N1(k)+m(k ...
Yong-Hong Fan, Wan-Tong Li
doaj   +1 more source

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