Results 91 to 100 of about 41,354 (310)

Two-parameter nonsmooth grazing bifurcations of limit cycles: classification and open problems

, 2005
This paper proposes a strategy for the classification of codimension-two grazing bifurcations of limit cycles in piecewise smooth systems of ordinary differential equations.
Homer, ME, Piiroinen, PT, Kowalczyk, PS, Hogan, SJ, Nordmark, A, Champneys, AR, Kuznetsov, YA, di Bernardo, M   +7 more
core  

MetalCenter‐Dependent Selectivity Divergence in MN4 Single‐Atom Catalysts for Aerobic HMF Oxidation

Advanced Science, EarlyView.
Two single‐atom catalysts with M‐N4 configurations (FeN4 and CoN4) were developed for selective HMF oxidation. FeN4 achieves 93.9% selectivity toward FFCA via superoxide anions (O2•−), while CoN4 preferentially produces FDCA through hydroxyl radicals (•OH). DFT calculations reveal that distinct adsorption energies and charge redistribution at the metal
Haoyu Wang, Zhilong Ye, Weihao Wang, Zhi Hu, Qing Tian, Jie Gao, Lianbing Zhang   +6 more
wiley   +1 more source

Effect of spindle group wavering on attracting sets of deformation tool displacements under turning

Advanced Engineering Research, 2017
Introduction. In a large body of research, problems of the cutting process dynamics are considered in the uniformity of the static stability in the moving coordinate system defined by the trajectories of the machine executive elements, and also of the ...
Vilor L. Zakovorotny, Valeria E. Gvindzhiliya   +1 more
doaj   +1 more source

Biolipid Film‐Fused Electrochemiluminescence for Multipurpose In Situ Bioassays

Advanced Science, EarlyView.
An ECL‐emissive, membrane‐interactive scaffold was fabricated, and facilely fused with natural and non‐native phospholipids into multifactorial mimicries of cytomembranes and vesicles for in vitro representative membrane‐process probing. Such a biointerface‐based, state‐sensitive ECL paradigm not only pinpointed proximal phenomena, including channeling
Jialiang Chen, Bin Li, Yingying Wang, Fulin Zhu, Wenxuan Yang, Xuanyu Fu, Tiantian Man, Qiuyue Wu, Kewei Ren, Shengyuan Deng   +9 more
wiley   +1 more source

Reinnervation of Muscle Targets Enhances the Separability of Motor Unit Signals Following Peripheral Nerve Transfers

Advanced Science, EarlyView.
Injured or cut peripheral nerves can be surgically rerouted to reinnervate new muscle targets. This study demonstrates reinnervated muscles exhibit enhanced separability between individual motor unit signals, which can simplify signal recording and decomposition. These findings highlight the potential of reinnervated muscle to serve as a key biological
Kiara N Quinn, Siyu Wang, Lang Qin, Alessandro Ascani Orsini, Kenzi Griffith, Rachana Suresh, Fausto Kang, Pierce L Perkins, Neha Joshi, Alexis L Lowe, Sami Tuffaha, Nitish V Thakor   +11 more
wiley   +1 more source

Quasi-periodic oscillations of a neuron equation with two delays

Моделирование и анализ информационных систем, 2011
The dynamics of a generalized impulse neuron equation with two delays is studied. A local analysis of a loss of stability for a nonzero equilibrium state has been made.
S. D. Glyzin, E. O. Ovsyannikova
doaj  

Resonant Bifurcations

Journal of Mathematical Analysis and Applications, 2000
We consider dynamical systems depending on one or more real parameters, and assuming that, for some ``critical'' value of the parameters, the eigenvalues of the linear part are resonant, we discuss the existence -- under suitable hypotheses -- of a general class of bifurcating solutions in correspondence to this resonance.
openaire   +2 more sources

Harnessing Phase Separation for the Development of High‐Performance Hydrogels

Advanced Science, EarlyView.
ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao, Yiming Ma, Baihao Shao, Molly M. Stevens   +3 more
wiley   +1 more source

Finite to infinite steady state solutions, bifurcations of an integro-differential equation

, 2011
We consider a bistable integral equation which governs the stationary solutions of a convolution model of solid–solid phase transitions on a circle. We study the bifurcations of the set of the stationary solutions as the diffusion coefficient is varied to ...
Grinfeld, Michael, Duncan, D. B., Lord, G. J., Dugald B. Duncan, Duncan, Dugald B.; id_orcid, Grinfeld, M., Gabriel J. Lord, Lord, Gabriel J., Bhowmik, S. K., null null, Samir K. Bhowmik, Michael Grinfeld, Bhowmik, Samir K.   +12 more
core   +1 more source

Resonances in a spring-pendulum: algorithms for equivariant singularity theory [PDF]

, 1998
A spring-pendulum in resonance is a time-independent Hamiltonian model system for formal reduction to one degree of freedom, where some symmetry (reversibility) is maintained.
Vegter, G, Lunter, G.A.; id_orcid, Lunter, Gerard, Hoveijn, I.,, Vegter, G., Lunter, G.A., Hoveijn, I., Vegter, G.,, Broer, H.W., Vegter, G.; id_orcid, Broer, H.W.,, Broer, H.W.; id_orcid, Lunter, GA, Hoveijn, I, Lunter, G.A.,, Broer, HW   +15 more
core   +1 more source